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- <!-- Generated by the JDiff Javadoc doclet -->
- <!-- (http://www.jdiff.org) -->
- <!-- on Tue May 24 22:52:15 GMT 2022 -->
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- xsi:noNamespaceSchemaLocation='api.xsd'
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- <!-- Command line arguments = -doclet org.apache.hadoop.classification.tools.IncludePublicAnnotationsJDiffDoclet -docletpath /build/source/hadoop-common-project/hadoop-common/target/hadoop-annotations.jar:/build/source/hadoop-common-project/hadoop-common/target/jdiff.jar -verbose -classpath 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-sourcepath /build/source/hadoop-common-project/hadoop-common/src/main/java -apidir /build/source/hadoop-common-project/hadoop-common/target/site/jdiff/xml -apiname Apache Hadoop Common 2.10.2 -->
- <package name="org.apache.hadoop">
- <!-- start class org.apache.hadoop.HadoopIllegalArgumentException -->
- <class name="HadoopIllegalArgumentException" extends="java.lang.IllegalArgumentException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="HadoopIllegalArgumentException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs exception with the specified detail message.
- @param message detailed message.]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[Indicates that a method has been passed illegal or invalid argument. This
- exception is thrown instead of IllegalArgumentException to differentiate the
- exception thrown in Hadoop implementation from the one thrown in JDK.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.HadoopIllegalArgumentException -->
- </package>
- <package name="org.apache.hadoop.conf">
- <!-- start interface org.apache.hadoop.conf.Configurable -->
- <interface name="Configurable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Set the configuration to be used by this object.]]>
- </doc>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the configuration used by this object.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Something that may be configured with a {@link Configuration}.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.conf.Configurable -->
- <!-- start class org.apache.hadoop.conf.Configuration -->
- <class name="Configuration" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.lang.Iterable"/>
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[A new configuration.]]>
- </doc>
- </constructor>
- <constructor name="Configuration" type="boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[A new configuration where the behavior of reading from the default
- resources can be turned off.
-
- If the parameter {@code loadDefaults} is false, the new instance
- will not load resources from the default files.
- @param loadDefaults specifies whether to load from the default files]]>
- </doc>
- </constructor>
- <constructor name="Configuration" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[A new configuration with the same settings cloned from another.
-
- @param other the configuration from which to clone settings.]]>
- </doc>
- </constructor>
- <method name="addDeprecations"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="deltas" type="org.apache.hadoop.conf.Configuration.DeprecationDelta[]"/>
- <doc>
- <![CDATA[Adds a set of deprecated keys to the global deprecations.
- This method is lockless. It works by means of creating a new
- DeprecationContext based on the old one, and then atomically swapping in
- the new context. If someone else updated the context in between us reading
- the old context and swapping in the new one, we try again until we win the
- race.
- @param deltas The deprecations to add.]]>
- </doc>
- </method>
- <method name="addDeprecation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="use {@link #addDeprecation(String key, String newKey,
- String customMessage)} instead">
- <param name="key" type="java.lang.String"/>
- <param name="newKeys" type="java.lang.String[]"/>
- <param name="customMessage" type="java.lang.String"/>
- <doc>
- <![CDATA[Adds the deprecated key to the global deprecation map.
- It does not override any existing entries in the deprecation map.
- This is to be used only by the developers in order to add deprecation of
- keys, and attempts to call this method after loading resources once,
- would lead to <tt>UnsupportedOperationException</tt>
-
- If a key is deprecated in favor of multiple keys, they are all treated as
- aliases of each other, and setting any one of them resets all the others
- to the new value.
- If you have multiple deprecation entries to add, it is more efficient to
- use #addDeprecations(DeprecationDelta[] deltas) instead.
-
- @param key
- @param newKeys
- @param customMessage
- @deprecated use {@link #addDeprecation(String key, String newKey,
- String customMessage)} instead]]>
- </doc>
- </method>
- <method name="addDeprecation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.String"/>
- <param name="newKey" type="java.lang.String"/>
- <param name="customMessage" type="java.lang.String"/>
- <doc>
- <![CDATA[Adds the deprecated key to the global deprecation map.
- It does not override any existing entries in the deprecation map.
- This is to be used only by the developers in order to add deprecation of
- keys, and attempts to call this method after loading resources once,
- would lead to <tt>UnsupportedOperationException</tt>
-
- If you have multiple deprecation entries to add, it is more efficient to
- use #addDeprecations(DeprecationDelta[] deltas) instead.
- @param key
- @param newKey
- @param customMessage]]>
- </doc>
- </method>
- <method name="addDeprecation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="use {@link #addDeprecation(String key, String newKey)} instead">
- <param name="key" type="java.lang.String"/>
- <param name="newKeys" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Adds the deprecated key to the global deprecation map when no custom
- message is provided.
- It does not override any existing entries in the deprecation map.
- This is to be used only by the developers in order to add deprecation of
- keys, and attempts to call this method after loading resources once,
- would lead to <tt>UnsupportedOperationException</tt>
-
- If a key is deprecated in favor of multiple keys, they are all treated as
- aliases of each other, and setting any one of them resets all the others
- to the new value.
-
- If you have multiple deprecation entries to add, it is more efficient to
- use #addDeprecations(DeprecationDelta[] deltas) instead.
- @param key Key that is to be deprecated
- @param newKeys list of keys that take up the values of deprecated key
- @deprecated use {@link #addDeprecation(String key, String newKey)} instead]]>
- </doc>
- </method>
- <method name="addDeprecation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.String"/>
- <param name="newKey" type="java.lang.String"/>
- <doc>
- <![CDATA[Adds the deprecated key to the global deprecation map when no custom
- message is provided.
- It does not override any existing entries in the deprecation map.
- This is to be used only by the developers in order to add deprecation of
- keys, and attempts to call this method after loading resources once,
- would lead to <tt>UnsupportedOperationException</tt>
-
- If you have multiple deprecation entries to add, it is more efficient to
- use #addDeprecations(DeprecationDelta[] deltas) instead.
- @param key Key that is to be deprecated
- @param newKey key that takes up the value of deprecated key]]>
- </doc>
- </method>
- <method name="isDeprecated" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.String"/>
- <doc>
- <![CDATA[checks whether the given <code>key</code> is deprecated.
-
- @param key the parameter which is to be checked for deprecation
- @return <code>true</code> if the key is deprecated and
- <code>false</code> otherwise.]]>
- </doc>
- </method>
- <method name="setDeprecatedProperties"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Sets all deprecated properties that are not currently set but have a
- corresponding new property that is set. Useful for iterating the
- properties when all deprecated properties for currently set properties
- need to be present.]]>
- </doc>
- </method>
- <method name="reloadExistingConfigurations"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reload existing configuration instances.]]>
- </doc>
- </method>
- <method name="addDefaultResource"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Add a default resource. Resources are loaded in the order of the resources
- added.
- @param name file name. File should be present in the classpath.]]>
- </doc>
- </method>
- <method name="setRestrictSystemPropertiesDefault"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="val" type="boolean"/>
- </method>
- <method name="setRestrictSystemProperties"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="val" type="boolean"/>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Add a configuration resource.
-
- The properties of this resource will override properties of previously
- added resources, unless they were marked <a href="#Final">final</a>.
-
- @param name resource to be added, the classpath is examined for a file
- with that name.]]>
- </doc>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="restrictedParser" type="boolean"/>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <doc>
- <![CDATA[Add a configuration resource.
-
- The properties of this resource will override properties of previously
- added resources, unless they were marked <a href="#Final">final</a>.
-
- @param url url of the resource to be added, the local filesystem is
- examined directly to find the resource, without referring to
- the classpath.]]>
- </doc>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="restrictedParser" type="boolean"/>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Add a configuration resource.
-
- The properties of this resource will override properties of previously
- added resources, unless they were marked <a href="#Final">final</a>.
-
- @param file file-path of resource to be added, the local filesystem is
- examined directly to find the resource, without referring to
- the classpath.]]>
- </doc>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <param name="restrictedParser" type="boolean"/>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <doc>
- <![CDATA[Add a configuration resource.
-
- The properties of this resource will override properties of previously
- added resources, unless they were marked <a href="#Final">final</a>.
-
- WARNING: The contents of the InputStream will be cached, by this method.
- So use this sparingly because it does increase the memory consumption.
-
- @param in InputStream to deserialize the object from. In will be read from
- when a get or set is called next. After it is read the stream will be
- closed.]]>
- </doc>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="restrictedParser" type="boolean"/>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Add a configuration resource.
-
- The properties of this resource will override properties of previously
- added resources, unless they were marked <a href="#Final">final</a>.
-
- @param in InputStream to deserialize the object from.
- @param name the name of the resource because InputStream.toString is not
- very descriptive some times.]]>
- </doc>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="name" type="java.lang.String"/>
- <param name="restrictedParser" type="boolean"/>
- </method>
- <method name="addResource"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Add a configuration resource.
- The properties of this resource will override properties of previously
- added resources, unless they were marked <a href="#Final">final</a>.
- @param conf Configuration object from which to load properties]]>
- </doc>
- </method>
- <method name="reloadConfiguration"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reload configuration from previously added resources.
- This method will clear all the configuration read from the added
- resources, and final parameters. This will make the resources to
- be read again before accessing the values. Values that are added
- via set methods will overlay values read from the resources.]]>
- </doc>
- </method>
- <method name="get" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property, <code>null</code> if
- no such property exists. If the key is deprecated, it returns the value of
- the first key which replaces the deprecated key and is not null.
-
- Values are processed for <a href="#VariableExpansion">variable expansion</a>
- before being returned.
-
- @param name the property name, will be trimmed before get value.
- @return the value of the <code>name</code> or its replacing property,
- or null if no such property exists.]]>
- </doc>
- </method>
- <method name="setAllowNullValueProperties"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="val" type="boolean"/>
- <doc>
- <![CDATA[Set Configuration to allow keys without values during setup. Intended
- for use during testing.
- @param val If true, will allow Configuration to store keys without values]]>
- </doc>
- </method>
- <method name="setRestrictSystemProps"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="val" type="boolean"/>
- </method>
- <method name="onlyKeyExists" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Return existence of the <code>name</code> property, but only for
- names which have no valid value, usually non-existent or commented
- out in XML.
- @param name the property name
- @return true if the property <code>name</code> exists without value]]>
- </doc>
- </method>
- <method name="getTrimmed" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a trimmed <code>String</code>,
- <code>null</code> if no such property exists.
- If the key is deprecated, it returns the value of
- the first key which replaces the deprecated key and is not null
-
- Values are processed for <a href="#VariableExpansion">variable expansion</a>
- before being returned.
-
- @param name the property name.
- @return the value of the <code>name</code> or its replacing property,
- or null if no such property exists.]]>
- </doc>
- </method>
- <method name="getTrimmed" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a trimmed <code>String</code>,
- <code>defaultValue</code> if no such property exists.
- See @{Configuration#getTrimmed} for more details.
-
- @param name the property name.
- @param defaultValue the property default value.
- @return the value of the <code>name</code> or defaultValue
- if it is not set.]]>
- </doc>
- </method>
- <method name="getRaw" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property, without doing
- <a href="#VariableExpansion">variable expansion</a>.If the key is
- deprecated, it returns the value of the first key which replaces
- the deprecated key and is not null.
-
- @param name the property name.
- @return the value of the <code>name</code> property or
- its replacing property and null if no such property exists.]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Set the <code>value</code> of the <code>name</code> property. If
- <code>name</code> is deprecated or there is a deprecated name associated to it,
- it sets the value to both names. Name will be trimmed before put into
- configuration.
-
- @param name property name.
- @param value property value.]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <param name="source" type="java.lang.String"/>
- <doc>
- <![CDATA[Set the <code>value</code> of the <code>name</code> property. If
- <code>name</code> is deprecated, it also sets the <code>value</code> to
- the keys that replace the deprecated key. Name will be trimmed before put
- into configuration.
- @param name property name.
- @param value property value.
- @param source the place that this configuration value came from
- (For debugging).
- @throws IllegalArgumentException when the value or name is null.]]>
- </doc>
- </method>
- <method name="unset"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Unset a previously set property.]]>
- </doc>
- </method>
- <method name="setIfUnset"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Sets a property if it is currently unset.
- @param name the property name
- @param value the new value]]>
- </doc>
- </method>
- <method name="get" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code>. If the key is deprecated,
- it returns the value of the first key which replaces the deprecated key
- and is not null.
- If no such property exists,
- then <code>defaultValue</code> is returned.
-
- @param name property name, will be trimmed before get value.
- @param defaultValue default value.
- @return property value, or <code>defaultValue</code> if the property
- doesn't exist.]]>
- </doc>
- </method>
- <method name="getInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="int"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as an <code>int</code>.
-
- If no such property exists, the provided default value is returned,
- or if the specified value is not a valid <code>int</code>,
- then an error is thrown.
-
- @param name property name.
- @param defaultValue default value.
- @throws NumberFormatException when the value is invalid
- @return property value as an <code>int</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="getInts" return="int[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a set of comma-delimited
- <code>int</code> values.
-
- If no such property exists, an empty array is returned.
-
- @param name property name
- @return property value interpreted as an array of comma-delimited
- <code>int</code> values]]>
- </doc>
- </method>
- <method name="setInt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Set the value of the <code>name</code> property to an <code>int</code>.
-
- @param name property name.
- @param value <code>int</code> value of the property.]]>
- </doc>
- </method>
- <method name="getLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="long"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>long</code>.
- If no such property exists, the provided default value is returned,
- or if the specified value is not a valid <code>long</code>,
- then an error is thrown.
-
- @param name property name.
- @param defaultValue default value.
- @throws NumberFormatException when the value is invalid
- @return property value as a <code>long</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="getLongBytes" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="long"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>long</code> or
- human readable format. If no such property exists, the provided default
- value is returned, or if the specified value is not a valid
- <code>long</code> or human readable format, then an error is thrown. You
- can use the following suffix (case insensitive): k(kilo), m(mega), g(giga),
- t(tera), p(peta), e(exa)
- @param name property name.
- @param defaultValue default value.
- @throws NumberFormatException when the value is invalid
- @return property value as a <code>long</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="setLong"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Set the value of the <code>name</code> property to a <code>long</code>.
-
- @param name property name.
- @param value <code>long</code> value of the property.]]>
- </doc>
- </method>
- <method name="getFloat" return="float"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="float"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>float</code>.
- If no such property exists, the provided default value is returned,
- or if the specified value is not a valid <code>float</code>,
- then an error is thrown.
- @param name property name.
- @param defaultValue default value.
- @throws NumberFormatException when the value is invalid
- @return property value as a <code>float</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="setFloat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="float"/>
- <doc>
- <![CDATA[Set the value of the <code>name</code> property to a <code>float</code>.
-
- @param name property name.
- @param value property value.]]>
- </doc>
- </method>
- <method name="getDouble" return="double"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="double"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>double</code>.
- If no such property exists, the provided default value is returned,
- or if the specified value is not a valid <code>double</code>,
- then an error is thrown.
- @param name property name.
- @param defaultValue default value.
- @throws NumberFormatException when the value is invalid
- @return property value as a <code>double</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="setDouble"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="double"/>
- <doc>
- <![CDATA[Set the value of the <code>name</code> property to a <code>double</code>.
-
- @param name property name.
- @param value property value.]]>
- </doc>
- </method>
- <method name="getBoolean" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="boolean"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>boolean</code>.
- If no such property is specified, or if the specified value is not a valid
- <code>boolean</code>, then <code>defaultValue</code> is returned.
-
- @param name property name.
- @param defaultValue default value.
- @return property value as a <code>boolean</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="setBoolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="boolean"/>
- <doc>
- <![CDATA[Set the value of the <code>name</code> property to a <code>boolean</code>.
-
- @param name property name.
- @param value <code>boolean</code> value of the property.]]>
- </doc>
- </method>
- <method name="setBooleanIfUnset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="boolean"/>
- <doc>
- <![CDATA[Set the given property, if it is currently unset.
- @param name property name
- @param value new value]]>
- </doc>
- </method>
- <method name="setEnum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="T"/>
- <doc>
- <![CDATA[Set the value of the <code>name</code> property to the given type. This
- is equivalent to <code>set(<name>, value.toString())</code>.
- @param name property name
- @param value new value]]>
- </doc>
- </method>
- <method name="getEnum" return="T"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="T"/>
- <doc>
- <![CDATA[Return value matching this enumerated type.
- Note that the returned value is trimmed by this method.
- @param name Property name
- @param defaultValue Value returned if no mapping exists
- @throws IllegalArgumentException If mapping is illegal for the type
- provided]]>
- </doc>
- </method>
- <method name="setTimeDuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="long"/>
- <param name="unit" type="java.util.concurrent.TimeUnit"/>
- <doc>
- <![CDATA[Set the value of <code>name</code> to the given time duration. This
- is equivalent to <code>set(<name>, value + <time suffix>)</code>.
- @param name Property name
- @param value Time duration
- @param unit Unit of time]]>
- </doc>
- </method>
- <method name="getTimeDuration" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="long"/>
- <param name="unit" type="java.util.concurrent.TimeUnit"/>
- <doc>
- <![CDATA[Return time duration in the given time unit. Valid units are encoded in
- properties as suffixes: nanoseconds (ns), microseconds (us), milliseconds
- (ms), seconds (s), minutes (m), hours (h), and days (d).
- @param name Property name
- @param defaultValue Value returned if no mapping exists.
- @param unit Unit to convert the stored property, if it exists.
- @throws NumberFormatException If the property stripped of its unit is not
- a number]]>
- </doc>
- </method>
- <method name="getTimeDuration" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="long"/>
- <param name="defaultUnit" type="java.util.concurrent.TimeUnit"/>
- <param name="returnUnit" type="java.util.concurrent.TimeUnit"/>
- <doc>
- <![CDATA[Return time duration in the given time unit. Valid units are encoded in
- properties as suffixes: nanoseconds (ns), microseconds (us), milliseconds
- (ms), seconds (s), minutes (m), hours (h), and days (d). If no unit is
- provided, the default unit is applied.
- @param name Property name
- @param defaultValue Value returned if no mapping exists.
- @param defaultUnit Default time unit if no valid suffix is provided.
- @param returnUnit The unit used for the returned value.
- @throws NumberFormatException If the property stripped of its unit is not
- a number
- @return time duration in given time unit]]>
- </doc>
- </method>
- <method name="getTimeDurations" return="long[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="unit" type="java.util.concurrent.TimeUnit"/>
- </method>
- <method name="getPattern" return="java.util.regex.Pattern"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.util.regex.Pattern"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>Pattern</code>.
- If no such property is specified, or if the specified value is not a valid
- <code>Pattern</code>, then <code>DefaultValue</code> is returned.
- Note that the returned value is NOT trimmed by this method.
- @param name property name
- @param defaultValue default value
- @return property value as a compiled Pattern, or defaultValue]]>
- </doc>
- </method>
- <method name="setPattern"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="pattern" type="java.util.regex.Pattern"/>
- <doc>
- <![CDATA[Set the given property to <code>Pattern</code>.
- If the pattern is passed as null, sets the empty pattern which results in
- further calls to getPattern(...) returning the default value.
- @param name property name
- @param pattern new value]]>
- </doc>
- </method>
- <method name="getPropertySources" return="java.lang.String[]"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Gets information about why a property was set. Typically this is the
- path to the resource objects (file, URL, etc.) the property came from, but
- it can also indicate that it was set programatically, or because of the
- command line.
- @param name - The property name to get the source of.
- @return null - If the property or its source wasn't found. Otherwise,
- returns a list of the sources of the resource. The older sources are
- the first ones in the list. So for example if a configuration is set from
- the command line, and then written out to a file that is read back in the
- first entry would indicate that it was set from the command line, while
- the second one would indicate the file that the new configuration was read
- in from.]]>
- </doc>
- </method>
- <method name="getRange" return="org.apache.hadoop.conf.Configuration.IntegerRanges"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.String"/>
- <doc>
- <![CDATA[Parse the given attribute as a set of integer ranges
- @param name the attribute name
- @param defaultValue the default value if it is not set
- @return a new set of ranges from the configured value]]>
- </doc>
- </method>
- <method name="getStringCollection" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the comma delimited values of the <code>name</code> property as
- a collection of <code>String</code>s.
- If no such property is specified then empty collection is returned.
- <p>
- This is an optimized version of {@link #getStrings(String)}
-
- @param name property name.
- @return property value as a collection of <code>String</code>s.]]>
- </doc>
- </method>
- <method name="getStrings" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the comma delimited values of the <code>name</code> property as
- an array of <code>String</code>s.
- If no such property is specified then <code>null</code> is returned.
-
- @param name property name.
- @return property value as an array of <code>String</code>s,
- or <code>null</code>.]]>
- </doc>
- </method>
- <method name="getStrings" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Get the comma delimited values of the <code>name</code> property as
- an array of <code>String</code>s.
- If no such property is specified then default value is returned.
-
- @param name property name.
- @param defaultValue The default value
- @return property value as an array of <code>String</code>s,
- or default value.]]>
- </doc>
- </method>
- <method name="getTrimmedStringCollection" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the comma delimited values of the <code>name</code> property as
- a collection of <code>String</code>s, trimmed of the leading and trailing whitespace.
- If no such property is specified then empty <code>Collection</code> is returned.
- @param name property name.
- @return property value as a collection of <code>String</code>s, or empty <code>Collection</code>]]>
- </doc>
- </method>
- <method name="getTrimmedStrings" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the comma delimited values of the <code>name</code> property as
- an array of <code>String</code>s, trimmed of the leading and trailing whitespace.
- If no such property is specified then an empty array is returned.
-
- @param name property name.
- @return property value as an array of trimmed <code>String</code>s,
- or empty array.]]>
- </doc>
- </method>
- <method name="getTrimmedStrings" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Get the comma delimited values of the <code>name</code> property as
- an array of <code>String</code>s, trimmed of the leading and trailing whitespace.
- If no such property is specified then default value is returned.
-
- @param name property name.
- @param defaultValue The default value
- @return property value as an array of trimmed <code>String</code>s,
- or default value.]]>
- </doc>
- </method>
- <method name="setStrings"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="values" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Set the array of string values for the <code>name</code> property as
- as comma delimited values.
-
- @param name property name.
- @param values The values]]>
- </doc>
- </method>
- <method name="getPassword" return="char[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the value for a known password configuration element.
- In order to enable the elimination of clear text passwords in config,
- this method attempts to resolve the property name as an alias through
- the CredentialProvider API and conditionally fallsback to config.
- @param name property name
- @return password]]>
- </doc>
- </method>
- <method name="getPasswordFromCredentialProviders" return="char[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Try and resolve the provided element name as a credential provider
- alias.
- @param name alias of the provisioned credential
- @return password or null if not found
- @throws IOException]]>
- </doc>
- </method>
- <method name="getPasswordFromConfig" return="char[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Fallback to clear text passwords in configuration.
- @param name
- @return clear text password or null]]>
- </doc>
- </method>
- <method name="getSocketAddr" return="java.net.InetSocketAddress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="hostProperty" type="java.lang.String"/>
- <param name="addressProperty" type="java.lang.String"/>
- <param name="defaultAddressValue" type="java.lang.String"/>
- <param name="defaultPort" type="int"/>
- <doc>
- <![CDATA[Get the socket address for <code>hostProperty</code> as a
- <code>InetSocketAddress</code>. If <code>hostProperty</code> is
- <code>null</code>, <code>addressProperty</code> will be used. This
- is useful for cases where we want to differentiate between host
- bind address and address clients should use to establish connection.
- @param hostProperty bind host property name.
- @param addressProperty address property name.
- @param defaultAddressValue the default value
- @param defaultPort the default port
- @return InetSocketAddress]]>
- </doc>
- </method>
- <method name="getSocketAddr" return="java.net.InetSocketAddress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultAddress" type="java.lang.String"/>
- <param name="defaultPort" type="int"/>
- <doc>
- <![CDATA[Get the socket address for <code>name</code> property as a
- <code>InetSocketAddress</code>.
- @param name property name.
- @param defaultAddress the default value
- @param defaultPort the default port
- @return InetSocketAddress]]>
- </doc>
- </method>
- <method name="setSocketAddr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="addr" type="java.net.InetSocketAddress"/>
- <doc>
- <![CDATA[Set the socket address for the <code>name</code> property as
- a <code>host:port</code>.]]>
- </doc>
- </method>
- <method name="updateConnectAddr" return="java.net.InetSocketAddress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="hostProperty" type="java.lang.String"/>
- <param name="addressProperty" type="java.lang.String"/>
- <param name="defaultAddressValue" type="java.lang.String"/>
- <param name="addr" type="java.net.InetSocketAddress"/>
- <doc>
- <![CDATA[Set the socket address a client can use to connect for the
- <code>name</code> property as a <code>host:port</code>. The wildcard
- address is replaced with the local host's address. If the host and address
- properties are configured the host component of the address will be combined
- with the port component of the addr to generate the address. This is to allow
- optional control over which host name is used in multi-home bind-host
- cases where a host can have multiple names
- @param hostProperty the bind-host configuration name
- @param addressProperty the service address configuration name
- @param defaultAddressValue the service default address configuration value
- @param addr InetSocketAddress of the service listener
- @return InetSocketAddress for clients to connect]]>
- </doc>
- </method>
- <method name="updateConnectAddr" return="java.net.InetSocketAddress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="addr" type="java.net.InetSocketAddress"/>
- <doc>
- <![CDATA[Set the socket address a client can use to connect for the
- <code>name</code> property as a <code>host:port</code>. The wildcard
- address is replaced with the local host's address.
- @param name property name.
- @param addr InetSocketAddress of a listener to store in the given property
- @return InetSocketAddress for clients to connect]]>
- </doc>
- </method>
- <method name="getClassByName" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="ClassNotFoundException" type="java.lang.ClassNotFoundException"/>
- <doc>
- <![CDATA[Load a class by name.
-
- @param name the class name.
- @return the class object.
- @throws ClassNotFoundException if the class is not found.]]>
- </doc>
- </method>
- <method name="getClassByNameOrNull" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Load a class by name, returning null rather than throwing an exception
- if it couldn't be loaded. This is to avoid the overhead of creating
- an exception.
-
- @param name the class name
- @return the class object, or null if it could not be found.]]>
- </doc>
- </method>
- <method name="getClasses" return="java.lang.Class[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.Class[]"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property
- as an array of <code>Class</code>.
- The value of the property specifies a list of comma separated class names.
- If no such property is specified, then <code>defaultValue</code> is
- returned.
-
- @param name the property name.
- @param defaultValue default value.
- @return property value as a <code>Class[]</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="getClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.Class"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>Class</code>.
- If no such property is specified, then <code>defaultValue</code> is
- returned.
-
- @param name the class name.
- @param defaultValue default value.
- @return property value as a <code>Class</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="getClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="defaultValue" type="java.lang.Class"/>
- <param name="xface" type="java.lang.Class"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>Class</code>
- implementing the interface specified by <code>xface</code>.
-
- If no such property is specified, then <code>defaultValue</code> is
- returned.
-
- An exception is thrown if the returned class does not implement the named
- interface.
-
- @param name the class name.
- @param defaultValue default value.
- @param xface the interface implemented by the named class.
- @return property value as a <code>Class</code>,
- or <code>defaultValue</code>.]]>
- </doc>
- </method>
- <method name="getInstances" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="xface" type="java.lang.Class"/>
- <doc>
- <![CDATA[Get the value of the <code>name</code> property as a <code>List</code>
- of objects implementing the interface specified by <code>xface</code>.
-
- An exception is thrown if any of the classes does not exist, or if it does
- not implement the named interface.
-
- @param name the property name.
- @param xface the interface implemented by the classes named by
- <code>name</code>.
- @return a <code>List</code> of objects implementing <code>xface</code>.]]>
- </doc>
- </method>
- <method name="setClass"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="theClass" type="java.lang.Class"/>
- <param name="xface" type="java.lang.Class"/>
- <doc>
- <![CDATA[Set the value of the <code>name</code> property to the name of a
- <code>theClass</code> implementing the given interface <code>xface</code>.
-
- An exception is thrown if <code>theClass</code> does not implement the
- interface <code>xface</code>.
-
- @param name property name.
- @param theClass property value.
- @param xface the interface implemented by the named class.]]>
- </doc>
- </method>
- <method name="getLocalPath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dirsProp" type="java.lang.String"/>
- <param name="path" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get a local file under a directory named by <i>dirsProp</i> with
- the given <i>path</i>. If <i>dirsProp</i> contains multiple directories,
- then one is chosen based on <i>path</i>'s hash code. If the selected
- directory does not exist, an attempt is made to create it.
-
- @param dirsProp directory in which to locate the file.
- @param path file-path.
- @return local file under the directory with the given path.]]>
- </doc>
- </method>
- <method name="getFile" return="java.io.File"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dirsProp" type="java.lang.String"/>
- <param name="path" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get a local file name under a directory named in <i>dirsProp</i> with
- the given <i>path</i>. If <i>dirsProp</i> contains multiple directories,
- then one is chosen based on <i>path</i>'s hash code. If the selected
- directory does not exist, an attempt is made to create it.
-
- @param dirsProp directory in which to locate the file.
- @param path file-path.
- @return local file under the directory with the given path.]]>
- </doc>
- </method>
- <method name="getResource" return="java.net.URL"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the {@link URL} for the named resource.
-
- @param name resource name.
- @return the url for the named resource.]]>
- </doc>
- </method>
- <method name="getConfResourceAsInputStream" return="java.io.InputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get an input stream attached to the configuration resource with the
- given <code>name</code>.
-
- @param name configuration resource name.
- @return an input stream attached to the resource.]]>
- </doc>
- </method>
- <method name="getConfResourceAsReader" return="java.io.Reader"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get a {@link Reader} attached to the configuration resource with the
- given <code>name</code>.
-
- @param name configuration resource name.
- @return a reader attached to the resource.]]>
- </doc>
- </method>
- <method name="getFinalParameters" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the set of parameters marked final.
- @return final parameter set.]]>
- </doc>
- </method>
- <method name="getProps" return="java.util.Properties"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="size" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the number of keys in the configuration.
- @return number of keys in the configuration.]]>
- </doc>
- </method>
- <method name="clear"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Clears all keys from the configuration.]]>
- </doc>
- </method>
- <method name="iterator" return="java.util.Iterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get an {@link Iterator} to go through the list of <code>String</code>
- key-value pairs in the configuration.
-
- @return an iterator over the entries.]]>
- </doc>
- </method>
- <method name="getPropsWithPrefix" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="confPrefix" type="java.lang.String"/>
- <doc>
- <![CDATA[Constructs a mapping of configuration and includes all properties that
- start with the specified configuration prefix. Property names in the
- mapping are trimmed to remove the configuration prefix.
- @param confPrefix configuration prefix
- @return mapping of configuration properties with prefix stripped]]>
- </doc>
- </method>
- <method name="writeXml"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write out the non-default properties in this configuration to the given
- {@link OutputStream} using UTF-8 encoding.
-
- @param out the output stream to write to.]]>
- </doc>
- </method>
- <method name="writeXml"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.Writer"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeXml"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="propertyName" type="java.lang.String"/>
- <param name="out" type="java.io.Writer"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="IllegalArgumentException" type="java.lang.IllegalArgumentException"/>
- <doc>
- <![CDATA[Write out the non-default properties in this configuration to the
- given {@link Writer}.
- <li>
- When property name is not empty and the property exists in the
- configuration, this method writes the property and its attributes
- to the {@link Writer}.
- </li>
- <p>
- <li>
- When property name is null or empty, this method writes all the
- configuration properties and their attributes to the {@link Writer}.
- </li>
- <p>
- <li>
- When property name is not empty but the property doesn't exist in
- the configuration, this method throws an {@link IllegalArgumentException}.
- </li>
- <p>
- @param out the writer to write to.]]>
- </doc>
- </method>
- <method name="dumpConfiguration"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="config" type="org.apache.hadoop.conf.Configuration"/>
- <param name="propertyName" type="java.lang.String"/>
- <param name="out" type="java.io.Writer"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Writes properties and their attributes (final and resource)
- to the given {@link Writer}.
- <li>
- When propertyName is not empty, and the property exists
- in the configuration, the format of the output would be,
- <pre>
- {
- "property": {
- "key" : "key1",
- "value" : "value1",
- "isFinal" : "key1.isFinal",
- "resource" : "key1.resource"
- }
- }
- </pre>
- </li>
- <li>
- When propertyName is null or empty, it behaves same as
- {@link #dumpConfiguration(Configuration, Writer)}, the
- output would be,
- <pre>
- { "properties" :
- [ { key : "key1",
- value : "value1",
- isFinal : "key1.isFinal",
- resource : "key1.resource" },
- { key : "key2",
- value : "value2",
- isFinal : "ke2.isFinal",
- resource : "key2.resource" }
- ]
- }
- </pre>
- </li>
- <li>
- When propertyName is not empty, and the property is not
- found in the configuration, this method will throw an
- {@link IllegalArgumentException}.
- </li>
- <p>
- @param config the configuration
- @param propertyName property name
- @param out the Writer to write to
- @throws IOException
- @throws IllegalArgumentException when property name is not
- empty and the property is not found in configuration]]>
- </doc>
- </method>
- <method name="dumpConfiguration"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="config" type="org.apache.hadoop.conf.Configuration"/>
- <param name="out" type="java.io.Writer"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Writes out all properties and their attributes (final and resource) to
- the given {@link Writer}, the format of the output would be,
- <pre>
- { "properties" :
- [ { key : "key1",
- value : "value1",
- isFinal : "key1.isFinal",
- resource : "key1.resource" },
- { key : "key2",
- value : "value2",
- isFinal : "ke2.isFinal",
- resource : "key2.resource" }
- ]
- }
- </pre>
- It does not output the properties of the configuration object which
- is loaded from an input stream.
- <p>
- @param config the configuration
- @param out the Writer to write to
- @throws IOException]]>
- </doc>
- </method>
- <method name="getClassLoader" return="java.lang.ClassLoader"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the {@link ClassLoader} for this job.
- @return the correct class loader.]]>
- </doc>
- </method>
- <method name="setClassLoader"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="classLoader" type="java.lang.ClassLoader"/>
- <doc>
- <![CDATA[Set the class loader that will be used to load the various objects.
-
- @param classLoader the new class loader.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setQuietMode"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="quietmode" type="boolean"/>
- <doc>
- <![CDATA[Set the quietness-mode.
-
- In the quiet-mode, error and informational messages might not be logged.
-
- @param quietmode <code>true</code> to set quiet-mode on, <code>false</code>
- to turn it off.]]>
- </doc>
- </method>
- <method name="main"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[For debugging. List non-default properties to the terminal and exit.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getValByRegex" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="regex" type="java.lang.String"/>
- <doc>
- <![CDATA[get keys matching the the regex
- @param regex
- @return Map<String,String> with matching keys]]>
- </doc>
- </method>
- <method name="dumpDeprecatedKeys"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="hasWarnedDeprecation" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns whether or not a deprecated name has been warned. If the name is not
- deprecated then always return false]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Provides access to configuration parameters.
- <h4 id="Resources">Resources</h4>
- <p>Configurations are specified by resources. A resource contains a set of
- name/value pairs as XML data. Each resource is named by either a
- <code>String</code> or by a {@link Path}. If named by a <code>String</code>,
- then the classpath is examined for a file with that name. If named by a
- <code>Path</code>, then the local filesystem is examined directly, without
- referring to the classpath.
- <p>Unless explicitly turned off, Hadoop by default specifies two
- resources, loaded in-order from the classpath: <ol>
- <li><tt>
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a></tt>: Read-only defaults for hadoop.</li>
- <li><tt>core-site.xml</tt>: Site-specific configuration for a given hadoop
- installation.</li>
- </ol>
- Applications may add additional resources, which are loaded
- subsequent to these resources in the order they are added.
-
- <h4 id="FinalParams">Final Parameters</h4>
- <p>Configuration parameters may be declared <i>final</i>.
- Once a resource declares a value final, no subsequently-loaded
- resource can alter that value.
- For example, one might define a final parameter with:
- <tt><pre>
- <property>
- <name>dfs.hosts.include</name>
- <value>/etc/hadoop/conf/hosts.include</value>
- <b><final>true</final></b>
- </property></pre></tt>
- Administrators typically define parameters as final in
- <tt>core-site.xml</tt> for values that user applications may not alter.
- <h4 id="VariableExpansion">Variable Expansion</h4>
- <p>Value strings are first processed for <i>variable expansion</i>. The
- available properties are:<ol>
- <li>Other properties defined in this Configuration; and, if a name is
- undefined here,</li>
- <li>Properties in {@link System#getProperties()}.</li>
- </ol>
- <p>For example, if a configuration resource contains the following property
- definitions:
- <tt><pre>
- <property>
- <name>basedir</name>
- <value>/user/${<i>user.name</i>}</value>
- </property>
-
- <property>
- <name>tempdir</name>
- <value>${<i>basedir</i>}/tmp</value>
- </property></pre></tt>
- When <tt>conf.get("tempdir")</tt> is called, then <tt>${<i>basedir</i>}</tt>
- will be resolved to another property in this Configuration, while
- <tt>${<i>user.name</i>}</tt> would then ordinarily be resolved to the value
- of the System property with that name.
- By default, warnings will be given to any deprecated configuration
- parameters and these are suppressible by configuring
- <tt>log4j.logger.org.apache.hadoop.conf.Configuration.deprecation</tt> in
- log4j.properties file.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.conf.Configuration -->
- <!-- start class org.apache.hadoop.conf.Configured -->
- <class name="Configured" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="Configured"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a Configured.]]>
- </doc>
- </constructor>
- <constructor name="Configured" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a Configured.]]>
- </doc>
- </constructor>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Base class for things that may be configured with a {@link Configuration}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.conf.Configured -->
- <!-- start class org.apache.hadoop.conf.ReconfigurationTaskStatus -->
- <class name="ReconfigurationTaskStatus" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ReconfigurationTaskStatus" type="long, long, java.util.Map"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="hasTask" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return true if
- - A reconfiguration task has finished or
- - an active reconfiguration task is running]]>
- </doc>
- </method>
- <method name="stopped" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return true if the latest reconfiguration task has finished and there is
- no another active task running.]]>
- </doc>
- </method>
- <method name="getStartTime" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getEndTime" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getStatus" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- </method>
- </class>
- <!-- end class org.apache.hadoop.conf.ReconfigurationTaskStatus -->
- <doc>
- <![CDATA[Configuration of system parameters.]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.crypto">
- </package>
- <package name="org.apache.hadoop.crypto.key">
- <!-- start class org.apache.hadoop.crypto.key.KeyProvider -->
- <class name="KeyProvider" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="KeyProvider" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor.
-
- @param conf configuration for the provider]]>
- </doc>
- </constructor>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the provider configuration.
-
- @return the provider configuration]]>
- </doc>
- </method>
- <method name="options" return="org.apache.hadoop.crypto.key.KeyProvider.Options"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[A helper function to create an options object.
- @param conf the configuration to use
- @return a new options object]]>
- </doc>
- </method>
- <method name="isTransient" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Indicates whether this provider represents a store
- that is intended for transient use - such as the UserProvider
- is. These providers are generally used to provide access to
- keying material rather than for long term storage.
- @return true if transient, false otherwise]]>
- </doc>
- </method>
- <method name="getKeyVersion" return="org.apache.hadoop.crypto.key.KeyProvider.KeyVersion"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="versionName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the key material for a specific version of the key. This method is used
- when decrypting data.
- @param versionName the name of a specific version of the key
- @return the key material
- @throws IOException]]>
- </doc>
- </method>
- <method name="getKeys" return="java.util.List"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the key names for all keys.
- @return the list of key names
- @throws IOException]]>
- </doc>
- </method>
- <method name="getKeysMetadata" return="org.apache.hadoop.crypto.key.KeyProvider.Metadata[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="names" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get key metadata in bulk.
- @param names the names of the keys to get
- @throws IOException]]>
- </doc>
- </method>
- <method name="getKeyVersions" return="java.util.List"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the key material for all versions of a specific key name.
- @return the list of key material
- @throws IOException]]>
- </doc>
- </method>
- <method name="getCurrentKey" return="org.apache.hadoop.crypto.key.KeyProvider.KeyVersion"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the current version of the key, which should be used for encrypting new
- data.
- @param name the base name of the key
- @return the version name of the current version of the key or null if the
- key version doesn't exist
- @throws IOException]]>
- </doc>
- </method>
- <method name="getMetadata" return="org.apache.hadoop.crypto.key.KeyProvider.Metadata"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get metadata about the key.
- @param name the basename of the key
- @return the key's metadata or null if the key doesn't exist
- @throws IOException]]>
- </doc>
- </method>
- <method name="createKey" return="org.apache.hadoop.crypto.key.KeyProvider.KeyVersion"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="material" type="byte[]"/>
- <param name="options" type="org.apache.hadoop.crypto.key.KeyProvider.Options"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a new key. The given key must not already exist.
- @param name the base name of the key
- @param material the key material for the first version of the key.
- @param options the options for the new key.
- @return the version name of the first version of the key.
- @throws IOException]]>
- </doc>
- </method>
- <method name="generateKey" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="size" type="int"/>
- <param name="algorithm" type="java.lang.String"/>
- <exception name="NoSuchAlgorithmException" type="java.security.NoSuchAlgorithmException"/>
- <doc>
- <![CDATA[Generates a key material.
- @param size length of the key.
- @param algorithm algorithm to use for generating the key.
- @return the generated key.
- @throws NoSuchAlgorithmException]]>
- </doc>
- </method>
- <method name="createKey" return="org.apache.hadoop.crypto.key.KeyProvider.KeyVersion"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="options" type="org.apache.hadoop.crypto.key.KeyProvider.Options"/>
- <exception name="NoSuchAlgorithmException" type="java.security.NoSuchAlgorithmException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a new key generating the material for it.
- The given key must not already exist.
- <p/>
- This implementation generates the key material and calls the
- {@link #createKey(String, byte[], Options)} method.
- @param name the base name of the key
- @param options the options for the new key.
- @return the version name of the first version of the key.
- @throws IOException
- @throws NoSuchAlgorithmException]]>
- </doc>
- </method>
- <method name="deleteKey"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete the given key.
- @param name the name of the key to delete
- @throws IOException]]>
- </doc>
- </method>
- <method name="rollNewVersion" return="org.apache.hadoop.crypto.key.KeyProvider.KeyVersion"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="material" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Roll a new version of the given key.
- @param name the basename of the key
- @param material the new key material
- @return the name of the new version of the key
- @throws IOException]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Can be used by implementing classes to close any resources
- that require closing]]>
- </doc>
- </method>
- <method name="rollNewVersion" return="org.apache.hadoop.crypto.key.KeyProvider.KeyVersion"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="NoSuchAlgorithmException" type="java.security.NoSuchAlgorithmException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Roll a new version of the given key generating the material for it.
- <p/>
- This implementation generates the key material and calls the
- {@link #rollNewVersion(String, byte[])} method.
- @param name the basename of the key
- @return the name of the new version of the key
- @throws IOException]]>
- </doc>
- </method>
- <method name="flush"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Ensures that any changes to the keys are written to persistent store.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getBaseName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="versionName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Split the versionName in to a base name. Converts "/aaa/bbb/3" to
- "/aaa/bbb".
- @param versionName the version name to split
- @return the base name of the key
- @throws IOException]]>
- </doc>
- </method>
- <method name="buildVersionName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="version" type="int"/>
- <doc>
- <![CDATA[Build a version string from a basename and version number. Converts
- "/aaa/bbb" and 3 to "/aaa/bbb@3".
- @param name the basename of the key
- @param version the version of the key
- @return the versionName of the key.]]>
- </doc>
- </method>
- <method name="findProvider" return="org.apache.hadoop.crypto.key.KeyProvider"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="providerList" type="java.util.List"/>
- <param name="keyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Find the provider with the given key.
- @param providerList the list of providers
- @param keyName the key name we are looking for
- @return the KeyProvider that has the key]]>
- </doc>
- </method>
- <method name="needsPassword" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Does this provider require a password? This means that a password is
- required for normal operation, and it has not been found through normal
- means. If true, the password should be provided by the caller using
- setPassword().
- @return Whether or not the provider requires a password
- @throws IOException]]>
- </doc>
- </method>
- <method name="noPasswordWarning" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[If a password for the provider is needed, but is not provided, this will
- return a warning and instructions for supplying said password to the
- provider.
- @return A warning and instructions for supplying the password]]>
- </doc>
- </method>
- <method name="noPasswordError" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[If a password for the provider is needed, but is not provided, this will
- return an error message and instructions for supplying said password to
- the provider.
- @return An error message and instructions for supplying the password]]>
- </doc>
- </method>
- <field name="DEFAULT_CIPHER_NAME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_CIPHER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_BITLENGTH_NAME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_BITLENGTH" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="JCEKS_KEY_SERIALFILTER_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="JCEKS_KEY_SERIAL_FILTER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A provider of secret key material for Hadoop applications. Provides an
- abstraction to separate key storage from users of encryption. It
- is intended to support getting or storing keys in a variety of ways,
- including third party bindings.
- <P/>
- <code>KeyProvider</code> implementations must be thread safe.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.crypto.key.KeyProvider -->
- <!-- start class org.apache.hadoop.crypto.key.KeyProviderFactory -->
- <class name="KeyProviderFactory" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="KeyProviderFactory"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="createProvider" return="org.apache.hadoop.crypto.key.KeyProvider"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="providerName" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getProviders" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="get" return="org.apache.hadoop.crypto.key.KeyProvider"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a KeyProvider based on a provided URI.
- @param uri key provider URI
- @param conf configuration to initialize the key provider
- @return the key provider for the specified URI, or <code>NULL</code> if
- a provider for the specified URI scheme could not be found.
- @throws IOException thrown if the provider failed to initialize.]]>
- </doc>
- </method>
- <field name="KEY_PROVIDER_PATH" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A factory to create a list of KeyProvider based on the path given in a
- Configuration. It uses a service loader interface to find the available
- KeyProviders and create them based on the list of URIs.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.crypto.key.KeyProviderFactory -->
- </package>
- <package name="org.apache.hadoop.crypto.key.kms">
- </package>
- <package name="org.apache.hadoop.crypto.random">
- </package>
- <package name="org.apache.hadoop.fs">
- <!-- start class org.apache.hadoop.fs.AbstractFileSystem -->
- <class name="AbstractFileSystem" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="AbstractFileSystem" type="java.net.URI, java.lang.String, boolean, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="URISyntaxException" type="java.net.URISyntaxException"/>
- <doc>
- <![CDATA[Constructor to be called by subclasses.
-
- @param uri for this file system.
- @param supportedScheme the scheme supported by the implementor
- @param authorityNeeded if true then theURI must have authority, if false
- then the URI must have null authority.
- @throws URISyntaxException <code>uri</code> has syntax error]]>
- </doc>
- </constructor>
- <method name="getStatistics" return="org.apache.hadoop.fs.FileSystem.Statistics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isValidName" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns true if the specified string is considered valid in the path part
- of a URI by this file system. The default implementation enforces the rules
- of HDFS, but subclasses may override this method to implement specific
- validation rules for specific file systems.
-
- @param src String source filename to check, path part of the URI
- @return boolean true if the specified string is considered valid]]>
- </doc>
- </method>
- <method name="createFileSystem" return="org.apache.hadoop.fs.AbstractFileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[Create a file system instance for the specified uri using the conf. The
- conf is used to find the class name that implements the file system. The
- conf is also passed to the file system for its configuration.
- @param uri URI of the file system
- @param conf Configuration for the file system
-
- @return Returns the file system for the given URI
- @throws UnsupportedFileSystemException file system for <code>uri</code> is
- not found]]>
- </doc>
- </method>
- <method name="getStatistics" return="org.apache.hadoop.fs.FileSystem.Statistics"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <doc>
- <![CDATA[Get the statistics for a particular file system.
-
- @param uri
- used as key to lookup STATISTICS_TABLE. Only scheme and authority
- part of the uri are used.
- @return a statistics object]]>
- </doc>
- </method>
- <method name="clearStatistics"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="printStatistics"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Prints statistics for all file systems.]]>
- </doc>
- </method>
- <method name="getAllStatistics" return="java.util.Map"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="get" return="org.apache.hadoop.fs.AbstractFileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[The main factory method for creating a file system. Get a file system for
- the URI's scheme and authority. The scheme of the <code>uri</code>
- determines a configuration property name,
- <tt>fs.AbstractFileSystem.<i>scheme</i>.impl</tt> whose value names the
- AbstractFileSystem class.
-
- The entire URI and conf is passed to the AbstractFileSystem factory method.
-
- @param uri for the file system to be created.
- @param conf which is passed to the file system impl.
-
- @return file system for the given URI.
-
- @throws UnsupportedFileSystemException if the file system for
- <code>uri</code> is not supported.]]>
- </doc>
- </method>
- <method name="checkScheme"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="supportedScheme" type="java.lang.String"/>
- <doc>
- <![CDATA[Check that the Uri's scheme matches
- @param uri
- @param supportedScheme]]>
- </doc>
- </method>
- <method name="getUriDefaultPort" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The default port of this file system.
-
- @return default port of this file system's Uri scheme
- A uri with a port of -1 => default port;]]>
- </doc>
- </method>
- <method name="getUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a URI whose scheme and authority identify this FileSystem.
-
- @return the uri of this file system.]]>
- </doc>
- </method>
- <method name="checkPath"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Check that a Path belongs to this FileSystem.
-
- If the path is fully qualified URI, then its scheme and authority
- matches that of this file system. Otherwise the path must be
- slash-relative name.
-
- @throws InvalidPathException if the path is invalid]]>
- </doc>
- </method>
- <method name="getUriPath" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Get the path-part of a pathname. Checks that URI matches this file system
- and that the path-part is a valid name.
-
- @param p path
-
- @return path-part of the Path p]]>
- </doc>
- </method>
- <method name="makeQualified" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Make the path fully qualified to this file system
- @param path
- @return the qualified path]]>
- </doc>
- </method>
- <method name="getInitialWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Some file systems like LocalFileSystem have an initial workingDir
- that is used as the starting workingDir. For other file systems
- like HDFS there is no built in notion of an initial workingDir.
-
- @return the initial workingDir if the file system has such a notion
- otherwise return a null.]]>
- </doc>
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the current user's home directory in this file system.
- The default implementation returns "/user/$USER/".
-
- @return current user's home directory.]]>
- </doc>
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="use {@link #getServerDefaults(Path)} instead">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a set of server default configuration values.
-
- @return server default configuration values
-
- @throws IOException an I/O error occurred
- @deprecated use {@link #getServerDefaults(Path)} instead]]>
- </doc>
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a set of server default configuration values based on path.
- @param f path to fetch server defaults
- @return server default configuration values for path
- @throws IOException an I/O error occurred]]>
- </doc>
- </method>
- <method name="resolvePath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the fully-qualified path of path f resolving the path
- through any internal symlinks or mount point
- @param p path to be resolved
- @return fully qualified path
- @throws FileNotFoundException, AccessControlException, IOException
- UnresolvedLinkException if symbolic link on path cannot be resolved
- internally]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="createFlag" type="java.util.EnumSet"/>
- <param name="opts" type="org.apache.hadoop.fs.Options.CreateOpts[]"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#create(Path, EnumSet, Options.CreateOpts...)} except
- that the Path f must be fully qualified and the permission is absolute
- (i.e. umask has been applied).]]>
- </doc>
- </method>
- <method name="createInternal" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="flag" type="java.util.EnumSet"/>
- <param name="absolutePermission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="checksumOpt" type="org.apache.hadoop.fs.Options.ChecksumOpt"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link #create(Path, EnumSet, Options.CreateOpts...)} except that the opts
- have been declared explicitly.]]>
- </doc>
- </method>
- <method name="mkdir"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#mkdir(Path, FsPermission, boolean)} except that the Path
- f must be fully qualified and the permission is absolute (i.e.
- umask has been applied).]]>
- </doc>
- </method>
- <method name="delete" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#delete(Path, boolean)} except that Path f must be for
- this file system.]]>
- </doc>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#open(Path)} except that Path f must be for this
- file system.]]>
- </doc>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#open(Path, int)} except that Path f must be for this
- file system.]]>
- </doc>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#truncate(Path, long)} except that Path f must be for
- this file system.]]>
- </doc>
- </method>
- <method name="setReplication" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#setReplication(Path, short)} except that Path f must be
- for this file system.]]>
- </doc>
- </method>
- <method name="rename"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="options" type="org.apache.hadoop.fs.Options.Rename[]"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#rename(Path, Path, Options.Rename...)} except that Path
- f must be for this file system.]]>
- </doc>
- </method>
- <method name="renameInternal"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#rename(Path, Path, Options.Rename...)} except that Path
- f must be for this file system and NO OVERWRITE is performed.
-
- File systems that do not have a built in overwrite need implement only this
- method and can take advantage of the default impl of the other
- {@link #renameInternal(Path, Path, boolean)}]]>
- </doc>
- </method>
- <method name="renameInternal"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#rename(Path, Path, Options.Rename...)} except that Path
- f must be for this file system.]]>
- </doc>
- </method>
- <method name="supportsSymlinks" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the file system supports symlinks, false otherwise.
- @return true if filesystem supports symlinks]]>
- </doc>
- </method>
- <method name="createSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.fs.Path"/>
- <param name="link" type="org.apache.hadoop.fs.Path"/>
- <param name="createParent" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#createSymlink(Path, Path, boolean)};]]>
- </doc>
- </method>
- <method name="getLinkTarget" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Partially resolves the path. This is used during symlink resolution in
- {@link FSLinkResolver}, and differs from the similarly named method
- {@link FileContext#getLinkTarget(Path)}.
- @throws IOException subclass implementations may throw IOException]]>
- </doc>
- </method>
- <method name="setPermission"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#setPermission(Path, FsPermission)} except that Path f
- must be for this file system.]]>
- </doc>
- </method>
- <method name="setOwner"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#setOwner(Path, String, String)} except that Path f must
- be for this file system.]]>
- </doc>
- </method>
- <method name="setTimes"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="mtime" type="long"/>
- <param name="atime" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#setTimes(Path, long, long)} except that Path f must be
- for this file system.]]>
- </doc>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#getFileChecksum(Path)} except that Path f must be for
- this file system.]]>
- </doc>
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#getFileStatus(Path)}
- except that an UnresolvedLinkException may be thrown if a symlink is
- encountered in the path.]]>
- </doc>
- </method>
- <method name="msync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- <doc>
- <![CDATA[Synchronize client metadata state.
- <p/>In some FileSystem implementations such as HDFS metadata
- synchronization is essential to guarantee consistency of read requests
- particularly in HA setting.
- @throws IOException
- @throws UnsupportedOperationException]]>
- </doc>
- </method>
- <method name="getFileLinkStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#getFileLinkStatus(Path)}
- except that an UnresolvedLinkException may be thrown if a symlink is
- encountered in the path leading up to the final path component.
- If the file system does not support symlinks then the behavior is
- equivalent to {@link AbstractFileSystem#getFileStatus(Path)}.]]>
- </doc>
- </method>
- <method name="getFileBlockLocations" return="org.apache.hadoop.fs.BlockLocation[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="start" type="long"/>
- <param name="len" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#getFileBlockLocations(Path, long, long)} except that
- Path f must be for this file system.]]>
- </doc>
- </method>
- <method name="getFsStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#getFsStatus(Path)} except that Path f must be for this
- file system.]]>
- </doc>
- </method>
- <method name="getFsStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#getFsStatus(Path)}.]]>
- </doc>
- </method>
- <method name="listStatusIterator" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#listStatus(Path)} except that Path f must be for this
- file system.]]>
- </doc>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#listLocatedStatus(Path)} except that Path f
- must be for this file system.]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext.Util#listStatus(Path)} except that Path f must be
- for this file system.]]>
- </doc>
- </method>
- <method name="listCorruptFileBlocks" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[@return an iterator over the corrupt files under the given path
- (may contain duplicates if a file has more than one corrupt block)
- @throws IOException]]>
- </doc>
- </method>
- <method name="setVerifyChecksum"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="verifyChecksum" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#setVerifyChecksum(boolean, Path)} except that Path f
- must be for this file system.]]>
- </doc>
- </method>
- <method name="getCanonicalServiceName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get a canonical name for this file system.
- @return a URI string that uniquely identifies this file system]]>
- </doc>
- </method>
- <method name="modifyAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Modifies ACL entries of files and directories. This method can add new ACL
- entries or modify the permissions on existing ACL entries. All existing
- ACL entries that are not specified in this call are retained without
- changes. (Modifications are merged into the current ACL.)
- @param path Path to modify
- @param aclSpec List<AclEntry> describing modifications
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="removeAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes ACL entries from files and directories. Other ACL entries are
- retained.
- @param path Path to modify
- @param aclSpec List<AclEntry> describing entries to remove
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="removeDefaultAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes all default ACL entries from files and directories.
- @param path Path to modify
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="removeAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes all but the base ACL entries of files and directories. The entries
- for user, group, and others are retained for compatibility with permission
- bits.
- @param path Path to modify
- @throws IOException if an ACL could not be removed]]>
- </doc>
- </method>
- <method name="setAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Fully replaces ACL of files and directories, discarding all existing
- entries.
- @param path Path to modify
- @param aclSpec List<AclEntry> describing modifications, must include entries
- for user, group, and others for compatibility with permission bits.
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="getAclStatus" return="org.apache.hadoop.fs.permission.AclStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Gets the ACLs of files and directories.
- @param path Path to get
- @return RemoteIterator<AclStatus> which returns each AclStatus
- @throws IOException if an ACL could not be read]]>
- </doc>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to modify
- @param name xattr name.
- @param value xattr value.
- @throws IOException]]>
- </doc>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to modify
- @param name xattr name.
- @param value xattr value.
- @param flag xattr set flag
- @throws IOException]]>
- </doc>
- </method>
- <method name="getXAttr" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get an xattr for a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attribute
- @param name xattr name.
- @return byte[] xattr value.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattrs for a file or directory.
- Only those xattrs for which the logged-in user has permissions to view
- are returned.
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @return Map<String, byte[]> describing the XAttrs of the file or directory
- @throws IOException]]>
- </doc>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="names" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattrs for a file or directory.
- Only those xattrs for which the logged-in user has permissions to view
- are returned.
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @param names XAttr names.
- @return Map<String, byte[]> describing the XAttrs of the file or directory
- @throws IOException]]>
- </doc>
- </method>
- <method name="listXAttrs" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattr names for a file or directory.
- Only the xattr names for which the logged-in user has permissions to view
- are returned.
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @return Map<String, byte[]> describing the XAttrs of the file or directory
- @throws IOException]]>
- </doc>
- </method>
- <method name="removeXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Remove an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to remove extended attribute
- @param name xattr name
- @throws IOException]]>
- </doc>
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#createSnapshot(Path, String)}.]]>
- </doc>
- </method>
- <method name="renameSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotOldName" type="java.lang.String"/>
- <param name="snapshotNewName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#renameSnapshot(Path, String, String)}.]]>
- </doc>
- </method>
- <method name="deleteSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="snapshotDir" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The specification of this method matches that of
- {@link FileContext#deleteSnapshot(Path, String)}.]]>
- </doc>
- </method>
- <method name="setStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="policyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the storage policy for a given file or directory.
- @param path file or directory path.
- @param policyName the name of the target storage policy. The list
- of supported Storage policies can be retrieved
- via {@link #getAllStoragePolicies}.]]>
- </doc>
- </method>
- <method name="unsetStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Unset the storage policy set for a given file or directory.
- @param src file or directory path.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getStoragePolicy" return="org.apache.hadoop.fs.BlockStoragePolicySpi"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Retrieve the storage policy for a given file or directory.
- @param src file or directory path.
- @return storage policy for give file.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getAllStoragePolicies" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Retrieve all the storage policies supported by this file system.
- @return all storage policies supported by this filesystem.
- @throws IOException]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="java.lang.Object"/>
- </method>
- <field name="statistics" type="org.apache.hadoop.fs.FileSystem.Statistics"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The statistics for this file system.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[This class provides an interface for implementors of a Hadoop file system
- (analogous to the VFS of Unix). Applications do not access this class;
- instead they access files across all file systems using {@link FileContext}.
-
- Pathnames passed to AbstractFileSystem can be fully qualified URI that
- matches the "this" file system (ie same scheme and authority)
- or a Slash-relative name that is assumed to be relative
- to the root of the "this" file system .]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.AbstractFileSystem -->
- <!-- start class org.apache.hadoop.fs.AvroFSInput -->
- <class name="AvroFSInput" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.io.Closeable"/>
- <implements name="org.apache.avro.file.SeekableInput"/>
- <constructor name="AvroFSInput" type="org.apache.hadoop.fs.FSDataInputStream, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct given an {@link FSDataInputStream} and its length.]]>
- </doc>
- </constructor>
- <constructor name="AvroFSInput" type="org.apache.hadoop.fs.FileContext, org.apache.hadoop.fs.Path"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct given a {@link FileContext} and a {@link Path}.]]>
- </doc>
- </constructor>
- <method name="length" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="seek"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="tell" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Adapts an {@link FSDataInputStream} to Avro's SeekableInput interface.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.AvroFSInput -->
- <!-- start class org.apache.hadoop.fs.BlockLocation -->
- <class name="BlockLocation" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="BlockLocation"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default Constructor]]>
- </doc>
- </constructor>
- <constructor name="BlockLocation" type="org.apache.hadoop.fs.BlockLocation"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Copy constructor]]>
- </doc>
- </constructor>
- <constructor name="BlockLocation" type="java.lang.String[], java.lang.String[], long, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor with host, name, offset and length]]>
- </doc>
- </constructor>
- <constructor name="BlockLocation" type="java.lang.String[], java.lang.String[], long, long, boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor with host, name, offset, length and corrupt flag]]>
- </doc>
- </constructor>
- <constructor name="BlockLocation" type="java.lang.String[], java.lang.String[], java.lang.String[], long, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor with host, name, network topology, offset and length]]>
- </doc>
- </constructor>
- <constructor name="BlockLocation" type="java.lang.String[], java.lang.String[], java.lang.String[], long, long, boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor with host, name, network topology, offset, length
- and corrupt flag]]>
- </doc>
- </constructor>
- <constructor name="BlockLocation" type="java.lang.String[], java.lang.String[], java.lang.String[], java.lang.String[], long, long, boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="BlockLocation" type="java.lang.String[], java.lang.String[], java.lang.String[], java.lang.String[], java.lang.String[], org.apache.hadoop.fs.StorageType[], long, long, boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getHosts" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the list of hosts (hostname) hosting this block]]>
- </doc>
- </method>
- <method name="getCachedHosts" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the list of hosts (hostname) hosting a cached replica of the block]]>
- </doc>
- </method>
- <method name="getNames" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the list of names (IP:xferPort) hosting this block]]>
- </doc>
- </method>
- <method name="getTopologyPaths" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the list of network topology paths for each of the hosts.
- The last component of the path is the "name" (IP:xferPort).]]>
- </doc>
- </method>
- <method name="getStorageIds" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the storageID of each replica of the block.]]>
- </doc>
- </method>
- <method name="getStorageTypes" return="org.apache.hadoop.fs.StorageType[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the storage type of each replica of the block.]]>
- </doc>
- </method>
- <method name="getOffset" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the start offset of file associated with this block]]>
- </doc>
- </method>
- <method name="getLength" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the length of the block]]>
- </doc>
- </method>
- <method name="isCorrupt" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the corrupt flag.]]>
- </doc>
- </method>
- <method name="setOffset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="offset" type="long"/>
- <doc>
- <![CDATA[Set the start offset of file associated with this block]]>
- </doc>
- </method>
- <method name="setLength"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="length" type="long"/>
- <doc>
- <![CDATA[Set the length of block]]>
- </doc>
- </method>
- <method name="setCorrupt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="corrupt" type="boolean"/>
- <doc>
- <![CDATA[Set the corrupt flag.]]>
- </doc>
- </method>
- <method name="setHosts"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="hosts" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the hosts hosting this block]]>
- </doc>
- </method>
- <method name="setCachedHosts"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="cachedHosts" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Set the hosts hosting a cached replica of this block]]>
- </doc>
- </method>
- <method name="setNames"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="names" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the names (host:port) hosting this block]]>
- </doc>
- </method>
- <method name="setTopologyPaths"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="topologyPaths" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the network topology paths of the hosts]]>
- </doc>
- </method>
- <method name="setStorageIds"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="storageIds" type="java.lang.String[]"/>
- </method>
- <method name="setStorageTypes"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="storageTypes" type="org.apache.hadoop.fs.StorageType[]"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Represents the network location of a block, information about the hosts
- that contain block replicas, and other block metadata (E.g. the file
- offset associated with the block, length, whether it is corrupt, etc).]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.BlockLocation -->
- <!-- start interface org.apache.hadoop.fs.BlockStoragePolicySpi -->
- <interface name="BlockStoragePolicySpi" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the name of the storage policy. Policies are uniquely
- identified by name.
- @return the name of the storage policy.]]>
- </doc>
- </method>
- <method name="getStorageTypes" return="org.apache.hadoop.fs.StorageType[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the preferred storage types associated with this policy. These
- storage types are used sequentially for successive block replicas.
- @return preferred storage types used for placing block replicas.]]>
- </doc>
- </method>
- <method name="getCreationFallbacks" return="org.apache.hadoop.fs.StorageType[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the fallback storage types for creating new block replicas. Fallback
- storage types are used if the preferred storage types are not available.
- @return fallback storage types for new block replicas..]]>
- </doc>
- </method>
- <method name="getReplicationFallbacks" return="org.apache.hadoop.fs.StorageType[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the fallback storage types for replicating existing block replicas.
- Fallback storage types are used if the preferred storage types are not
- available.
- @return fallback storage types for replicating existing block replicas.]]>
- </doc>
- </method>
- <method name="isCopyOnCreateFile" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the policy is inherit-only and cannot be changed for
- an existing file.
- @return true if the policy is inherit-only.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A storage policy specifies the placement of block replicas on specific
- storage types.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.BlockStoragePolicySpi -->
- <!-- start interface org.apache.hadoop.fs.ByteBufferPositionedReadable -->
- <interface name="ByteBufferPositionedReadable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buf" type="java.nio.ByteBuffer"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads up to {@code buf.remaining()} bytes into buf from a given position in
- the file and returns the number of bytes read. Callers should use
- {@code buf.limit(...)} to control the size of the desired read and
- {@code buf.position(...)} to control the offset into the buffer the data
- should be written to.
- <p>
- After a successful call, {@code buf.position()} will be advanced by the
- number of bytes read and {@code buf.limit()} will be unchanged.
- <p>
- In the case of an exception, the state of the buffer (the contents of the
- buffer, the {@code buf.position()}, the {@code buf.limit()}, etc.) is
- undefined, and callers should be prepared to recover from this eventuality.
- <p>
- Callers should use {@link StreamCapabilities#hasCapability(String)} with
- {@link StreamCapabilities#PREADBYTEBUFFER} to check if the underlying
- stream supports this interface, otherwise they might get a
- {@link UnsupportedOperationException}.
- <p>
- Implementations should treat 0-length requests as legitimate, and must not
- signal an error upon their receipt.
- @param position position within file
- @param buf the ByteBuffer to receive the results of the read operation.
- @return the number of bytes read, possibly zero, or -1 if reached
- end-of-stream
- @throws IOException if there is some error performing the read]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Implementers of this interface provide a positioned read API that writes to a
- {@link ByteBuffer} rather than a {@code byte[]}.
- @see PositionedReadable
- @see ByteBufferReadable]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.ByteBufferPositionedReadable -->
- <!-- start interface org.apache.hadoop.fs.ByteBufferReadable -->
- <interface name="ByteBufferReadable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buf" type="java.nio.ByteBuffer"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads up to buf.remaining() bytes into buf. Callers should use
- buf.limit(..) to control the size of the desired read.
- <p/>
- After a successful call, buf.position() will be advanced by the number
- of bytes read and buf.limit() should be unchanged.
- <p/>
- In the case of an exception, the values of buf.position() and buf.limit()
- are undefined, and callers should be prepared to recover from this
- eventuality.
- <p/>
- Many implementations will throw {@link UnsupportedOperationException}, so
- callers that are not confident in support for this method from the
- underlying filesystem should be prepared to handle that exception.
- <p/>
- Implementations should treat 0-length requests as legitimate, and must not
- signal an error upon their receipt.
- @param buf
- the ByteBuffer to receive the results of the read operation.
- @return the number of bytes read, possibly zero, or -1 if
- reach end-of-stream
- @throws IOException
- if there is some error performing the read]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Implementers of this interface provide a read API that writes to a
- ByteBuffer, not a byte[].]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.ByteBufferReadable -->
- <!-- start interface org.apache.hadoop.fs.CanSetDropBehind -->
- <interface name="CanSetDropBehind" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="setDropBehind"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dropCache" type="java.lang.Boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- <doc>
- <![CDATA[Configure whether the stream should drop the cache.
- @param dropCache Whether to drop the cache. null means to use the
- default value.
- @throws IOException If there was an error changing the dropBehind
- setting.
- UnsupportedOperationException If this stream doesn't support
- setting the drop-behind.]]>
- </doc>
- </method>
- </interface>
- <!-- end interface org.apache.hadoop.fs.CanSetDropBehind -->
- <!-- start interface org.apache.hadoop.fs.CanSetReadahead -->
- <interface name="CanSetReadahead" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="setReadahead"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="readahead" type="java.lang.Long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- <doc>
- <![CDATA[Set the readahead on this stream.
- @param readahead The readahead to use. null means to use the default.
- @throws IOException If there was an error changing the dropBehind
- setting.
- UnsupportedOperationException If this stream doesn't support
- setting readahead.]]>
- </doc>
- </method>
- </interface>
- <!-- end interface org.apache.hadoop.fs.CanSetReadahead -->
- <!-- start interface org.apache.hadoop.fs.CanUnbuffer -->
- <interface name="CanUnbuffer" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="unbuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reduce the buffering. This will also free sockets and file descriptors
- held by the stream, if possible.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[FSDataInputStreams implement this interface to indicate that they can clear
- their buffers on request.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.CanUnbuffer -->
- <!-- start class org.apache.hadoop.fs.ChecksumException -->
- <class name="ChecksumException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ChecksumException" type="java.lang.String, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getPos" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Thrown for checksum errors.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.ChecksumException -->
- <!-- start class org.apache.hadoop.fs.ChecksumFileSystem -->
- <class name="ChecksumFileSystem" extends="org.apache.hadoop.fs.FilterFileSystem"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ChecksumFileSystem" type="org.apache.hadoop.fs.FileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getApproxChkSumLength" return="double"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="size" type="long"/>
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="setVerifyChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="verifyChecksum" type="boolean"/>
- <doc>
- <![CDATA[Set whether to verify checksum.]]>
- </doc>
- </method>
- <method name="setWriteChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="writeChecksum" type="boolean"/>
- </method>
- <method name="getRawFileSystem" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the raw file system]]>
- </doc>
- </method>
- <method name="getChecksumFile" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Return the name of the checksum file associated with a file.]]>
- </doc>
- </method>
- <method name="isChecksumFile" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Return true iff file is a checksum file name.]]>
- </doc>
- </method>
- <method name="getChecksumFileLength" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <param name="fileSize" type="long"/>
- <doc>
- <![CDATA[Return the length of the checksum file given the size of the
- actual file.]]>
- </doc>
- </method>
- <method name="getBytesPerSum" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the bytes Per Checksum]]>
- </doc>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataInputStream at the indicated Path.
- @param f the file name to open
- @param bufferSize the size of the buffer to be used.]]>
- </doc>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getChecksumLength" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="size" type="long"/>
- <param name="bytesPerSum" type="int"/>
- <doc>
- <![CDATA[Calculated the length of the checksum file in bytes.
- @param size the length of the data file in bytes
- @param bytesPerSum the number of bytes in a checksum block
- @return the number of bytes in the checksum file]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="modifyAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeDefaultAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setReplication" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set replication for an existing file.
- Implement the abstract <tt>setReplication</tt> of <tt>FileSystem</tt>
- @param src file name
- @param replication new replication
- @throws IOException
- @return true if successful;
- false if file does not exist or is a directory]]>
- </doc>
- </method>
- <method name="rename" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Rename files/dirs]]>
- </doc>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Implement the delete(Path, boolean) in checksum
- file system.]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the statuses of the files/directories in the given path if the path is
- a directory.
-
- @param f
- given path
- @return the statuses of the files/directories in the given path
- @throws IOException]]>
- </doc>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the statuses of the files/directories in the given path if the path is
- a directory.
-
- @param f
- given path
- @return the statuses of the files/directories in the given patch
- @throws IOException]]>
- </doc>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="copyToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is under FS, and the dst is on the local disk.
- Copy it from FS control to the local dst name.]]>
- </doc>
- </method>
- <method name="copyToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="copyCrc" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is under FS, and the dst is on the local disk.
- Copy it from FS control to the local dst name.
- If src and dst are directories, the copyCrc parameter
- determines whether to copy CRC files.]]>
- </doc>
- </method>
- <method name="startLocalOutput" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsOutputFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="completeLocalOutput"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsOutputFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="reportChecksumFailure" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="in" type="org.apache.hadoop.fs.FSDataInputStream"/>
- <param name="inPos" type="long"/>
- <param name="sums" type="org.apache.hadoop.fs.FSDataInputStream"/>
- <param name="sumsPos" type="long"/>
- <doc>
- <![CDATA[Report a checksum error to the file system.
- @param f the file name containing the error
- @param in the stream open on the file
- @param inPos the position of the beginning of the bad data in the file
- @param sums the stream open on the checksum file
- @param sumsPos the position of the beginning of the bad data in the checksum file
- @return if retry is neccessary]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Abstract Checksumed FileSystem.
- It provide a basic implementation of a Checksumed FileSystem,
- which creates a checksum file for each raw file.
- It generates & verifies checksums at the client side.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.ChecksumFileSystem -->
- <!-- start class org.apache.hadoop.fs.CommonConfigurationKeysPublic -->
- <class name="CommonConfigurationKeysPublic" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CommonConfigurationKeysPublic"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <field name="IO_NATIVE_LIB_AVAILABLE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_NATIVE_LIB_AVAILABLE_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_NATIVE_LIB_AVAILABLE_KEY]]>
- </doc>
- </field>
- <field name="NET_TOPOLOGY_SCRIPT_NUMBER_ARGS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="NET_TOPOLOGY_SCRIPT_NUMBER_ARGS_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for NET_TOPOLOGY_SCRIPT_NUMBER_ARGS_KEY]]>
- </doc>
- </field>
- <field name="FS_DEFAULT_NAME_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_DEFAULT_NAME_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_DEFAULT_NAME_KEY]]>
- </doc>
- </field>
- <field name="FS_DF_INTERVAL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_DF_INTERVAL_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_DF_INTERVAL_KEY]]>
- </doc>
- </field>
- <field name="FS_DU_INTERVAL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_DU_INTERVAL_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_DU_INTERVAL_KEY]]>
- </doc>
- </field>
- <field name="FS_GETSPACEUSED_CLASSNAME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_GETSPACEUSED_JITTER_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_GETSPACEUSED_JITTER_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_GETSPACEUSED_JITTER_KEY]]>
- </doc>
- </field>
- <field name="FS_CLIENT_RESOLVE_REMOTE_SYMLINKS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_CLIENT_RESOLVE_REMOTE_SYMLINKS_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_CLIENT_RESOLVE_REMOTE_SYMLINKS_KEY]]>
- </doc>
- </field>
- <field name="NET_TOPOLOGY_SCRIPT_FILE_NAME_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="NET_TOPOLOGY_NODE_SWITCH_MAPPING_IMPL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="NET_TOPOLOGY_IMPL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="NET_TOPOLOGY_TABLE_MAPPING_FILE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="NET_DEPENDENCY_SCRIPT_FILE_NAME_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FS_TRASH_CHECKPOINT_INTERVAL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_TRASH_CHECKPOINT_INTERVAL_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_TRASH_CHECKPOINT_INTERVAL_KEY]]>
- </doc>
- </field>
- <field name="FS_PROTECTED_DIRECTORIES" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Directories that cannot be removed unless empty, even by an
- administrator.]]>
- </doc>
- </field>
- <field name="FS_LOCAL_BLOCK_SIZE_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Not used anywhere, looks like default value for FS_LOCAL_BLOCK_SIZE]]>
- </doc>
- </field>
- <field name="FS_AUTOMATIC_CLOSE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_AUTOMATIC_CLOSE_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_AUTOMATIC_CLOSE_KEY]]>
- </doc>
- </field>
- <field name="FS_FILE_IMPL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_FTP_HOST_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_FTP_HOST_PORT_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_TRASH_INTERVAL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_TRASH_INTERVAL_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_TRASH_INTERVAL_KEY]]>
- </doc>
- </field>
- <field name="FS_CLIENT_TOPOLOGY_RESOLUTION_ENABLED" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="FS_CLIENT_TOPOLOGY_RESOLUTION_ENABLED_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for FS_CLIENT_TOPOLOGY_RESOLUTION_ENABLED.]]>
- </doc>
- </field>
- <field name="IO_MAPFILE_BLOOM_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_MAPFILE_BLOOM_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_MAPFILE_BLOOM_SIZE_KEY]]>
- </doc>
- </field>
- <field name="IO_MAPFILE_BLOOM_ERROR_RATE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_MAPFILE_BLOOM_ERROR_RATE_DEFAULT" type="float"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_MAPFILE_BLOOM_ERROR_RATE_KEY]]>
- </doc>
- </field>
- <field name="IO_COMPRESSION_CODEC_LZO_CLASS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Codec class that implements Lzo compression algorithm]]>
- </doc>
- </field>
- <field name="IO_MAP_INDEX_INTERVAL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_MAP_INDEX_INTERVAL_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_MAP_INDEX_INTERVAL_DEFAULT]]>
- </doc>
- </field>
- <field name="IO_MAP_INDEX_SKIP_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_MAP_INDEX_SKIP_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_MAP_INDEX_SKIP_KEY]]>
- </doc>
- </field>
- <field name="IO_SEQFILE_COMPRESS_BLOCKSIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_SEQFILE_COMPRESS_BLOCKSIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_SEQFILE_COMPRESS_BLOCKSIZE_KEY]]>
- </doc>
- </field>
- <field name="IO_FILE_BUFFER_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_FILE_BUFFER_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_FILE_BUFFER_SIZE_KEY]]>
- </doc>
- </field>
- <field name="IO_SKIP_CHECKSUM_ERRORS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IO_SKIP_CHECKSUM_ERRORS_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IO_SKIP_CHECKSUM_ERRORS_KEY]]>
- </doc>
- </field>
- <field name="IO_SORT_MB_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="Moved to mapreduce, see mapreduce.task.io.sort.mb
- in mapred-default.xml
- See https://issues.apache.org/jira/browse/HADOOP-6801
- For {@link org.apache.hadoop.io.SequenceFile.Sorter} control
- instead, see {@link #SEQ_IO_SORT_MB_KEY}.">
- <doc>
- <![CDATA[@deprecated Moved to mapreduce, see mapreduce.task.io.sort.mb
- in mapred-default.xml
- See https://issues.apache.org/jira/browse/HADOOP-6801
- For {@link org.apache.hadoop.io.SequenceFile.Sorter} control
- instead, see {@link #SEQ_IO_SORT_MB_KEY}.]]>
- </doc>
- </field>
- <field name="IO_SORT_MB_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for {@link #IO_SORT_MB_KEY}.]]>
- </doc>
- </field>
- <field name="IO_SORT_FACTOR_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="Moved to mapreduce, see mapreduce.task.io.sort.factor
- in mapred-default.xml
- See https://issues.apache.org/jira/browse/HADOOP-6801
- For {@link org.apache.hadoop.io.SequenceFile.Sorter} control
- instead, see {@link #SEQ_IO_SORT_FACTOR_KEY}.">
- <doc>
- <![CDATA[@deprecated Moved to mapreduce, see mapreduce.task.io.sort.factor
- in mapred-default.xml
- See https://issues.apache.org/jira/browse/HADOOP-6801
- For {@link org.apache.hadoop.io.SequenceFile.Sorter} control
- instead, see {@link #SEQ_IO_SORT_FACTOR_KEY}.]]>
- </doc>
- </field>
- <field name="IO_SORT_FACTOR_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for {@link #IO_SORT_FACTOR_KEY}.]]>
- </doc>
- </field>
- <field name="SEQ_IO_SORT_MB_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="SEQ_IO_SORT_MB_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for {@link #SEQ_IO_SORT_MB_KEY}.]]>
- </doc>
- </field>
- <field name="SEQ_IO_SORT_FACTOR_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="SEQ_IO_SORT_FACTOR_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for {@link #SEQ_IO_SORT_FACTOR_KEY}.]]>
- </doc>
- </field>
- <field name="IO_SERIALIZATIONS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="TFILE_IO_CHUNK_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="TFILE_IO_CHUNK_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for TFILE_IO_CHUNK_SIZE_DEFAULT]]>
- </doc>
- </field>
- <field name="TFILE_FS_INPUT_BUFFER_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="TFILE_FS_INPUT_BUFFER_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for TFILE_FS_INPUT_BUFFER_SIZE_KEY]]>
- </doc>
- </field>
- <field name="TFILE_FS_OUTPUT_BUFFER_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="TFILE_FS_OUTPUT_BUFFER_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for TFILE_FS_OUTPUT_BUFFER_SIZE_KEY]]>
- </doc>
- </field>
- <field name="HADOOP_CALLER_CONTEXT_ENABLED_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_CALLER_CONTEXT_ENABLED_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_CALLER_CONTEXT_MAX_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_CALLER_CONTEXT_MAX_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_CALLER_CONTEXT_SIGNATURE_MAX_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_CALLER_CONTEXT_SIGNATURE_MAX_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="IPC_CLIENT_CONNECTION_MAXIDLETIME_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECTION_MAXIDLETIME_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_CONNECTION_MAXIDLETIME_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_TIMEOUT_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_TIMEOUT_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_CONNECT_TIMEOUT_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_MAX_RETRIES_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_MAX_RETRIES_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_CONNECT_MAX_RETRIES_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_RETRY_INTERVAL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_RETRY_INTERVAL_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_CONNECT_RETRY_INTERVAL_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SOCKET_TIMEOUTS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SOCKET_TIMEOUTS_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SOCKET_TIMEOUTS_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_TCPNODELAY_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_TCPNODELAY_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_TCPNODELAY_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_LOW_LATENCY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Enable low-latency connections from the client]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_LOW_LATENCY_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value of IPC_CLIENT_LOW_LATENCY]]>
- </doc>
- </field>
- <field name="IPC_SERVER_LISTEN_QUEUE_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_SERVER_LISTEN_QUEUE_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_SERVER_LISTEN_QUEUE_SIZE_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_KILL_MAX_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_KILL_MAX_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_KILL_MAX_KEY]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_IDLETHRESHOLD_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_CLIENT_IDLETHRESHOLD_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_CLIENT_IDLETHRESHOLD_DEFAULT]]>
- </doc>
- </field>
- <field name="IPC_SERVER_TCPNODELAY_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_SERVER_TCPNODELAY_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_SERVER_TCPNODELAY_KEY]]>
- </doc>
- </field>
- <field name="IPC_SERVER_MAX_CONNECTIONS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="IPC_SERVER_MAX_CONNECTIONS_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for IPC_SERVER_MAX_CONNECTIONS_KEY]]>
- </doc>
- </field>
- <field name="IPC_SERVER_LOG_SLOW_RPC" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Logs if a RPC is really slow compared to rest of RPCs.]]>
- </doc>
- </field>
- <field name="IPC_SERVER_LOG_SLOW_RPC_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_RPC_SOCKET_FACTORY_CLASS_DEFAULT_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_RPC_SOCKET_FACTORY_CLASS_DEFAULT_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SOCKS_SERVER_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_UTIL_HASH_TYPE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_UTIL_HASH_TYPE_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for HADOOP_UTIL_HASH_TYPE_KEY]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUP_MAPPING" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_SECS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_SECS_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_NEGATIVE_CACHE_SECS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_NEGATIVE_CACHE_SECS_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_WARN_AFTER_MS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_WARN_AFTER_MS_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_BACKGROUND_RELOAD" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_BACKGROUND_RELOAD_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_BACKGROUND_RELOAD_THREADS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUPS_CACHE_BACKGROUND_RELOAD_THREADS_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_SECS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="use
- {@link CommonConfigurationKeysPublic#HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_KEY}
- instead.">
- <doc>
- <![CDATA[@deprecated use
- {@link CommonConfigurationKeysPublic#HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_KEY}
- instead.]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_SECS_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="use
- {@link CommonConfigurationKeysPublic#HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_DEFAULT}
- instead.">
- <doc>
- <![CDATA[@deprecated use
- {@link CommonConfigurationKeysPublic#HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT_DEFAULT}
- instead.]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_AUTHENTICATION" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_AUTHORIZATION" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_INSTRUMENTATION_REQUIRES_ADMIN" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_SERVICE_USER_NAME_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_AUTH_TO_LOCAL" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_DNS_INTERFACE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_DNS_NAMESERVER_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_TOKEN_FILES" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_HTTP_AUTHENTICATION_TYPE" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SSL_ENABLED_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SSL_ENABLED_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_KERBEROS_MIN_SECONDS_BEFORE_RELOGIN" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[See <a href="{@docRoot}/../core-default.html">core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_KERBEROS_MIN_SECONDS_BEFORE_RELOGIN_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for HADOOP_KERBEROS_MIN_SECONDS_BEFORE_RELOGIN]]>
- </doc>
- </field>
- <field name="HTTP_POLICY_HTTP_ONLY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HTTP_POLICY_HTTPS_ONLY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_RPC_PROTECTION" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_SASL_PROPS_RESOLVER_CLASS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Class to override Sasl Properties for a connection]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_CODEC_CLASSES_KEY_PREFIX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_CODEC_CLASSES_AES_CTR_NOPADDING_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_CODEC_CLASSES_AES_CTR_NOPADDING_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_CIPHER_SUITE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_CIPHER_SUITE_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_JCE_PROVIDER_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_JCEKS_KEY_SERIALFILTER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_BUFFER_SIZE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CRYPTO_BUFFER_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Defalt value for HADOOP_SECURITY_CRYPTO_BUFFER_SIZE_KEY]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_IMPERSONATION_PROVIDER_CLASS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Class to override Impersonation provider]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_KEY_PROVIDER_PATH" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_KEY_DEFAULT_BITLENGTH_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_KEY_DEFAULT_BITLENGTH_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Defalt value for HADOOP_SECURITY_KEY_DEFAULT_BITLENGTH_KEY.]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_KEY_DEFAULT_CIPHER_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_KEY_DEFAULT_CIPHER_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Defalt value for HADOOP_SECURITY_KEY_DEFAULT_CIPHER_KEY.]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_SIZE" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_SIZE_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for KMS_CLIENT_ENC_KEY_CACHE_SIZE]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_LOW_WATERMARK" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_LOW_WATERMARK_DEFAULT" type="float"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for KMS_CLIENT_ENC_KEY_CACHE_LOW_WATERMARK]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_NUM_REFILL_THREADS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_NUM_REFILL_THREADS_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for KMS_CLIENT_ENC_KEY_NUM_REFILL_THREADS]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_EXPIRY_MS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_ENC_KEY_CACHE_EXPIRY_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value for KMS_CLIENT_ENC_KEY_CACHE_EXPIRY (12 hrs)]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_TIMEOUT_SECONDS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_TIMEOUT_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="KMS_CLIENT_FAILOVER_MAX_RETRIES_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value is the number of providers specified.]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_FAILOVER_SLEEP_BASE_MILLIS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_FAILOVER_SLEEP_BASE_MILLIS_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value is 100 ms.]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_FAILOVER_SLEEP_MAX_MILLIS_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="KMS_CLIENT_FAILOVER_SLEEP_MAX_MILLIS_DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value is 2 secs.]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_JAVA_SECURE_RANDOM_ALGORITHM_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_JAVA_SECURE_RANDOM_ALGORITHM_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Defalt value for HADOOP_SECURITY_JAVA_SECURE_RANDOM_ALGORITHM_KEY]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_SECURE_RANDOM_IMPL_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_SECURE_RANDOM_DEVICE_FILE_PATH_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_SECURE_RANDOM_DEVICE_FILE_PATH_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SHELL_MISSING_DEFAULT_FS_WARNING_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SHELL_MISSING_DEFAULT_FS_WARNING_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SHELL_SAFELY_DELETE_LIMIT_NUM_FILES" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SHELL_SAFELY_DELETE_LIMIT_NUM_FILES_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_HTTP_LOGS_ENABLED" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_HTTP_LOGS_ENABLED_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Defalt value for HADOOP_HTTP_LOGS_ENABLED]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CREDENTIAL_PROVIDER_PATH" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CREDENTIAL_CLEAR_TEXT_FALLBACK" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_CREDENTIAL_CLEAR_TEXT_FALLBACK_DEFAULT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HADOOP_SECURITY_CREDENTIAL_PASSWORD_FILE_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_SENSITIVE_CONFIG_KEYS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@see
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
- core-default.xml</a>]]>
- </doc>
- </field>
- <field name="HADOOP_SECURITY_SENSITIVE_CONFIG_KEYS_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="SERVICE_SHUTDOWN_TIMEOUT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Configuration option for the shutdown hook manager shutdown time:
- {@value}.]]>
- </doc>
- </field>
- <field name="SERVICE_SHUTDOWN_TIMEOUT_DEFAULT" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default shutdown hook timeout: {@value} seconds.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[This class contains constants for configuration keys used
- in the common code.
- It includes all publicly documented configuration keys. In general
- this class should not be used directly (use CommonConfigurationKeys
- instead)]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.CommonConfigurationKeysPublic -->
- <!-- start class org.apache.hadoop.fs.ContentSummary -->
- <class name="ContentSummary" extends="org.apache.hadoop.fs.QuotaUsage"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="ContentSummary"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor deprecated by ContentSummary.Builder]]>
- </doc>
- </constructor>
- <constructor name="ContentSummary" type="long, long, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor, deprecated by ContentSummary.Builder
- This constructor implicitly set spaceConsumed the same as length.
- spaceConsumed and length must be set explicitly with
- ContentSummary.Builder]]>
- </doc>
- </constructor>
- <constructor name="ContentSummary" type="long, long, long, long, long, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor, deprecated by ContentSummary.Builder]]>
- </doc>
- </constructor>
- <method name="getLength" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the length]]>
- </doc>
- </method>
- <method name="getSnapshotLength" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDirectoryCount" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the directory count]]>
- </doc>
- </method>
- <method name="getSnapshotDirectoryCount" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getFileCount" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the file count]]>
- </doc>
- </method>
- <method name="getSnapshotFileCount" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getSnapshotSpaceConsumed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="to" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getHeader" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="qOption" type="boolean"/>
- <doc>
- <![CDATA[Return the header of the output.
- if qOption is false, output directory count, file count, and content size;
- if qOption is true, output quota and remaining quota as well.
-
- @param qOption a flag indicating if quota needs to be printed or not
- @return the header of the output]]>
- </doc>
- </method>
- <method name="getHeaderFields" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the names of the fields from the summary header.
-
- @return names of fields as displayed in the header]]>
- </doc>
- </method>
- <method name="getQuotaHeaderFields" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the names of the fields used in the quota summary.
-
- @return names of quota fields as displayed in the header]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="qOption" type="boolean"/>
- <doc>
- <![CDATA[Return the string representation of the object in the output format.
- if qOption is false, output directory count, file count, and content size;
- if qOption is true, output quota and remaining quota as well.
- @param qOption a flag indicating if quota needs to be printed or not
- @return the string representation of the object]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="qOption" type="boolean"/>
- <param name="hOption" type="boolean"/>
- <doc>
- <![CDATA[Return the string representation of the object in the output format.
- For description of the options,
- @see #toString(boolean, boolean, boolean, boolean, List)
-
- @param qOption a flag indicating if quota needs to be printed or not
- @param hOption a flag indicating if human readable output if to be used
- @return the string representation of the object]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="qOption" type="boolean"/>
- <param name="hOption" type="boolean"/>
- <param name="xOption" type="boolean"/>
- <doc>
- <![CDATA[Return the string representation of the object in the output format.
- For description of the options,
- @see #toString(boolean, boolean, boolean, boolean, List)
- @param qOption a flag indicating if quota needs to be printed or not
- @param hOption a flag indicating if human readable output is to be used
- @param xOption a flag indicating if calculation from snapshots is to be
- included in the output
- @return the string representation of the object]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="qOption" type="boolean"/>
- <param name="hOption" type="boolean"/>
- <param name="tOption" type="boolean"/>
- <param name="types" type="java.util.List"/>
- <doc>
- <![CDATA[Return the string representation of the object in the output format.
- For description of the options,
- @see #toString(boolean, boolean, boolean, boolean, List)
- @param qOption a flag indicating if quota needs to be printed or not
- @param hOption a flag indicating if human readable output if to be used
- @param tOption a flag indicating if display quota by storage types
- @param types Storage types to display
- @return the string representation of the object]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="qOption" type="boolean"/>
- <param name="hOption" type="boolean"/>
- <param name="tOption" type="boolean"/>
- <param name="xOption" type="boolean"/>
- <param name="types" type="java.util.List"/>
- <doc>
- <![CDATA[Return the string representation of the object in the output format.
- if qOption is false, output directory count, file count, and content size;
- if qOption is true, output quota and remaining quota as well.
- if hOption is false, file sizes are returned in bytes
- if hOption is true, file sizes are returned in human readable
- if tOption is true, display the quota by storage types
- if tOption is false, same logic with #toString(boolean,boolean)
- if xOption is false, output includes the calculation from snapshots
- if xOption is true, output excludes the calculation from snapshots
- @param qOption a flag indicating if quota needs to be printed or not
- @param hOption a flag indicating if human readable output is to be used
- @param tOption a flag indicating if display quota by storage types
- @param xOption a flag indicating if calculation from snapshots is to be
- included in the output
- @param types Storage types to display
- @return the string representation of the object]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Store the summary of a content (a directory or a file).]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.ContentSummary -->
- <!-- start class org.apache.hadoop.fs.CreateFlag -->
- <class name="CreateFlag" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.CreateFlag[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.CreateFlag"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="validate"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="flag" type="java.util.EnumSet"/>
- <doc>
- <![CDATA[Validate the CreateFlag and throw exception if it is invalid
- @param flag set of CreateFlag
- @throws HadoopIllegalArgumentException if the CreateFlag is invalid]]>
- </doc>
- </method>
- <method name="validate"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="java.lang.Object"/>
- <param name="pathExists" type="boolean"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Validate the CreateFlag for create operation
- @param path Object representing the path; usually String or {@link Path}
- @param pathExists pass true if the path exists in the file system
- @param flag set of CreateFlag
- @throws IOException on error
- @throws HadoopIllegalArgumentException if the CreateFlag is invalid]]>
- </doc>
- </method>
- <method name="validateForAppend"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="flag" type="java.util.EnumSet"/>
- <doc>
- <![CDATA[Validate the CreateFlag for the append operation. The flag must contain
- APPEND, and cannot contain OVERWRITE.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[CreateFlag specifies the file create semantic. Users can combine flags like: <br>
- <code>
- EnumSet.of(CreateFlag.CREATE, CreateFlag.APPEND)
- <code>
- <p>
-
- Use the CreateFlag as follows:
- <ol>
- <li> CREATE - to create a file if it does not exist,
- else throw FileAlreadyExists.</li>
- <li> APPEND - to append to a file if it exists,
- else throw FileNotFoundException.</li>
- <li> OVERWRITE - to truncate a file if it exists,
- else throw FileNotFoundException.</li>
- <li> CREATE|APPEND - to create a file if it does not exist,
- else append to an existing file.</li>
- <li> CREATE|OVERWRITE - to create a file if it does not exist,
- else overwrite an existing file.</li>
- <li> SYNC_BLOCK - to force closed blocks to the disk device.
- In addition {@link Syncable#hsync()} should be called after each write,
- if true synchronous behavior is required.</li>
- <li> LAZY_PERSIST - Create the block on transient storage (RAM) if
- available.</li>
- <li> APPEND_NEWBLOCK - Append data to a new block instead of end of the last
- partial block.</li>
- </ol>
-
- Following combinations are not valid and will result in
- {@link HadoopIllegalArgumentException}:
- <ol>
- <li> APPEND|OVERWRITE</li>
- <li> CREATE|APPEND|OVERWRITE</li>
- </ol>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.CreateFlag -->
- <!-- start class org.apache.hadoop.fs.FileAlreadyExistsException -->
- <class name="FileAlreadyExistsException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="FileAlreadyExistsException"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FileAlreadyExistsException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Used when target file already exists for any operation and
- is not configured to be overwritten.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FileAlreadyExistsException -->
- <!-- start class org.apache.hadoop.fs.FileChecksum -->
- <class name="FileChecksum" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="FileChecksum"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getAlgorithmName" return="java.lang.String"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The checksum algorithm name]]>
- </doc>
- </method>
- <method name="getLength" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The length of the checksum in bytes]]>
- </doc>
- </method>
- <method name="getBytes" return="byte[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The value of the checksum in bytes]]>
- </doc>
- </method>
- <method name="getChecksumOpt" return="org.apache.hadoop.fs.Options.ChecksumOpt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="java.lang.Object"/>
- <doc>
- <![CDATA[Return true if both the algorithms and the values are the same.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[An abstract class representing file checksums for files.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FileChecksum -->
- <!-- start class org.apache.hadoop.fs.FileContext -->
- <class name="FileContext" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getFSofPath" return="org.apache.hadoop.fs.AbstractFileSystem"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="absOrFqPath" type="org.apache.hadoop.fs.Path"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the file system of supplied path.
-
- @param absOrFqPath - absolute or fully qualified path
- @return the file system of the path
-
- @throws UnsupportedFileSystemException If the file system for
- <code>absOrFqPath</code> is not supported.
- @throws IOException If the file system for <code>absOrFqPath</code> could
- not be instantiated.]]>
- </doc>
- </method>
- <method name="getFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="defFS" type="org.apache.hadoop.fs.AbstractFileSystem"/>
- <param name="aConf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Create a FileContext with specified FS as default using the specified
- config.
-
- @param defFS
- @param aConf
- @return new FileContext with specifed FS as default.]]>
- </doc>
- </method>
- <method name="getFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="defaultFS" type="org.apache.hadoop.fs.AbstractFileSystem"/>
- <doc>
- <![CDATA[Create a FileContext for specified file system using the default config.
-
- @param defaultFS
- @return a FileContext with the specified AbstractFileSystem
- as the default FS.]]>
- </doc>
- </method>
- <method name="getFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[Create a FileContext using the default config read from the
- $HADOOP_CONFIG/core.xml, Unspecified key-values for config are defaulted
- from core-defaults.xml in the release jar.
-
- @throws UnsupportedFileSystemException If the file system from the default
- configuration is not supported]]>
- </doc>
- </method>
- <method name="getLocalFSFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[@return a FileContext for the local file system using the default config.
- @throws UnsupportedFileSystemException If the file system for
- {@link FsConstants#LOCAL_FS_URI} is not supported.]]>
- </doc>
- </method>
- <method name="getFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="defaultFsUri" type="java.net.URI"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[Create a FileContext for specified URI using the default config.
-
- @param defaultFsUri
- @return a FileContext with the specified URI as the default FS.
-
- @throws UnsupportedFileSystemException If the file system for
- <code>defaultFsUri</code> is not supported]]>
- </doc>
- </method>
- <method name="getFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="defaultFsUri" type="java.net.URI"/>
- <param name="aConf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[Create a FileContext for specified default URI using the specified config.
-
- @param defaultFsUri
- @param aConf
- @return new FileContext for specified uri
- @throws UnsupportedFileSystemException If the file system with specified is
- not supported
- @throws RuntimeException If the file system specified is supported but
- could not be instantiated, or if login fails.]]>
- </doc>
- </method>
- <method name="getFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="aConf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[Create a FileContext using the passed config. Generally it is better to use
- {@link #getFileContext(URI, Configuration)} instead of this one.
-
-
- @param aConf
- @return new FileContext
- @throws UnsupportedFileSystemException If file system in the config
- is not supported]]>
- </doc>
- </method>
- <method name="getLocalFSFileContext" return="org.apache.hadoop.fs.FileContext"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="aConf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <doc>
- <![CDATA[@param aConf - from which the FileContext is configured
- @return a FileContext for the local file system using the specified config.
-
- @throws UnsupportedFileSystemException If default file system in the config
- is not supported]]>
- </doc>
- </method>
- <method name="setWorkingDirectory"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newWDir" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the working directory for wd-relative names (such a "foo/bar"). Working
- directory feature is provided by simply prefixing relative names with the
- working dir. Note this is different from Unix where the wd is actually set
- to the inode. Hence setWorkingDir does not follow symlinks etc. This works
- better in a distributed environment that has multiple independent roots.
- {@link #getWorkingDirectory()} should return what setWorkingDir() set.
-
- @param newWDir new working directory
- @throws IOException
- <br>
- NewWdir can be one of:
- <ul>
- <li>relative path: "foo/bar";</li>
- <li>absolute without scheme: "/foo/bar"</li>
- <li>fully qualified with scheme: "xx://auth/foo/bar"</li>
- </ul>
- <br>
- Illegal WDs:
- <ul>
- <li>relative with scheme: "xx:foo/bar"</li>
- <li>non existent directory</li>
- </ul>]]>
- </doc>
- </method>
- <method name="getWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Gets the working directory for wd-relative names (such a "foo/bar").]]>
- </doc>
- </method>
- <method name="getUgi" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Gets the ugi in the file-context
- @return UserGroupInformation]]>
- </doc>
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the current user's home directory in this file system.
- The default implementation returns "/user/$USER/".
- @return the home directory]]>
- </doc>
- </method>
- <method name="getUMask" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the umask of this FileContext]]>
- </doc>
- </method>
- <method name="setUMask"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newUmask" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <doc>
- <![CDATA[Set umask to the supplied parameter.
- @param newUmask the new umask]]>
- </doc>
- </method>
- <method name="resolvePath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Resolve the path following any symlinks or mount points
- @param f to be resolved
- @return fully qualified resolved path
-
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws AccessControlException if access denied
- @throws IOException If an IO Error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server
-
- RuntimeExceptions:
- @throws InvalidPathException If path <code>f</code> is not valid]]>
- </doc>
- </method>
- <method name="makeQualified" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Make the path fully qualified if it is isn't.
- A Fully-qualified path has scheme and authority specified and an absolute
- path.
- Use the default file system and working dir in this FileContext to qualify.
- @param path
- @return qualified path]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="createFlag" type="java.util.EnumSet"/>
- <param name="opts" type="org.apache.hadoop.fs.Options.CreateOpts[]"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create or overwrite file on indicated path and returns an output stream for
- writing into the file.
-
- @param f the file name to open
- @param createFlag gives the semantics of create; see {@link CreateFlag}
- @param opts file creation options; see {@link Options.CreateOpts}.
- <ul>
- <li>Progress - to report progress on the operation - default null
- <li>Permission - umask is applied against permisssion: default is
- FsPermissions:getDefault()
-
- <li>CreateParent - create missing parent path; default is to not
- to create parents
- <li>The defaults for the following are SS defaults of the file
- server implementing the target path. Not all parameters make sense
- for all kinds of file system - eg. localFS ignores Blocksize,
- replication, checksum
- <ul>
- <li>BufferSize - buffersize used in FSDataOutputStream
- <li>Blocksize - block size for file blocks
- <li>ReplicationFactor - replication for blocks
- <li>ChecksumParam - Checksum parameters. server default is used
- if not specified.
- </ul>
- </ul>
-
- @return {@link FSDataOutputStream} for created file
-
- @throws AccessControlException If access is denied
- @throws FileAlreadyExistsException If file <code>f</code> already exists
- @throws FileNotFoundException If parent of <code>f</code> does not exist
- and <code>createParent</code> is false
- @throws ParentNotDirectoryException If parent of <code>f</code> is not a
- directory.
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server
-
- RuntimeExceptions:
- @throws InvalidPathException If path <code>f</code> is not valid]]>
- </doc>
- </method>
- <method name="mkdir"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Make(create) a directory and all the non-existent parents.
-
- @param dir - the dir to make
- @param permission - permissions is set permission&~umask
- @param createParent - if true then missing parent dirs are created if false
- then parent must exist
-
- @throws AccessControlException If access is denied
- @throws FileAlreadyExistsException If directory <code>dir</code> already
- exists
- @throws FileNotFoundException If parent of <code>dir</code> does not exist
- and <code>createParent</code> is false
- @throws ParentNotDirectoryException If parent of <code>dir</code> is not a
- directory
- @throws UnsupportedFileSystemException If file system for <code>dir</code>
- is not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server
-
- RuntimeExceptions:
- @throws InvalidPathException If path <code>dir</code> is not valid]]>
- </doc>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete a file.
- @param f the path to delete.
- @param recursive if path is a directory and set to
- true, the directory is deleted else throws an exception. In
- case of a file the recursive can be set to either true or false.
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server
-
- RuntimeExceptions:
- @throws InvalidPathException If path <code>f</code> is invalid]]>
- </doc>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataInputStream at the indicated Path using
- default buffersize.
- @param f the file name to open
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If file <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code>
- is not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataInputStream at the indicated Path.
-
- @param f the file name to open
- @param bufferSize the size of the buffer to be used.
-
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If file <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Truncate the file in the indicated path to the indicated size.
- <ul>
- <li>Fails if path is a directory.
- <li>Fails if path does not exist.
- <li>Fails if path is not closed.
- <li>Fails if new size is greater than current size.
- </ul>
- @param f The path to the file to be truncated
- @param newLength The size the file is to be truncated to
- @return <code>true</code> if the file has been truncated to the desired
- <code>newLength</code> and is immediately available to be reused for
- write operations such as <code>append</code>, or
- <code>false</code> if a background process of adjusting the length of
- the last block has been started, and clients should wait for it to
- complete before proceeding with further file updates.
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If file <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="setReplication" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set replication for an existing file.
-
- @param f file name
- @param replication new replication
- @return true if successful
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If file <code>f</code> does not exist
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="rename"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="options" type="org.apache.hadoop.fs.Options.Rename[]"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Renames Path src to Path dst
- <ul>
- <li
- <li>Fails if src is a file and dst is a directory.
- <li>Fails if src is a directory and dst is a file.
- <li>Fails if the parent of dst does not exist or is a file.
- </ul>
- <p>
- If OVERWRITE option is not passed as an argument, rename fails if the dst
- already exists.
- <p>
- If OVERWRITE option is passed as an argument, rename overwrites the dst if
- it is a file or an empty directory. Rename fails if dst is a non-empty
- directory.
- <p>
- Note that atomicity of rename is dependent on the file system
- implementation. Please refer to the file system documentation for details
- <p>
-
- @param src path to be renamed
- @param dst new path after rename
-
- @throws AccessControlException If access is denied
- @throws FileAlreadyExistsException If <code>dst</code> already exists and
- <code>options</options> has {@link Options.Rename#OVERWRITE}
- option false.
- @throws FileNotFoundException If <code>src</code> does not exist
- @throws ParentNotDirectoryException If parent of <code>dst</code> is not a
- directory
- @throws UnsupportedFileSystemException If file system for <code>src</code>
- and <code>dst</code> is not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set permission of a path.
- @param f
- @param permission - the new absolute permission (umask is not applied)
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code>
- is not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set owner of a path (i.e. a file or a directory). The parameters username
- and groupname cannot both be null.
-
- @param f The path
- @param username If it is null, the original username remains unchanged.
- @param groupname If it is null, the original groupname remains unchanged.
-
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server
-
- RuntimeExceptions:
- @throws HadoopIllegalArgumentException If <code>username</code> or
- <code>groupname</code> is invalid.]]>
- </doc>
- </method>
- <method name="setTimes"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="mtime" type="long"/>
- <param name="atime" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set access time of a file.
- @param f The path
- @param mtime Set the modification time of this file.
- The number of milliseconds since epoch (Jan 1, 1970).
- A value of -1 means that this call should not set modification time.
- @param atime Set the access time of this file.
- The number of milliseconds since Jan 1, 1970.
- A value of -1 means that this call should not set access time.
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the checksum of a file.
- @param f file path
- @return The file checksum. The default return value is null,
- which indicates that no checksum algorithm is implemented
- in the corresponding FileSystem.
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="setVerifyChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="verifyChecksum" type="boolean"/>
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the verify checksum flag for the file system denoted by the path.
- This is only applicable if the
- corresponding FileSystem supports checksum. By default doesn't do anything.
- @param verifyChecksum
- @param f set the verifyChecksum for the Filesystem containing this path
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a file status object that represents the path.
- @param f The path we want information from
- @return a FileStatus object
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="msync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- <doc>
- <![CDATA[Synchronize client metadata state.
- @throws IOException
- @throws UnsupportedOperationException]]>
- </doc>
- </method>
- <method name="getFileLinkStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a file status object that represents the path. If the path
- refers to a symlink then the FileStatus of the symlink is returned.
- The behavior is equivalent to #getFileStatus() if the underlying
- file system does not support symbolic links.
- @param f The path we want information from.
- @return A FileStatus object
-
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred]]>
- </doc>
- </method>
- <method name="getLinkTarget" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns the target of the given symbolic link as it was specified
- when the link was created. Links in the path leading up to the
- final path component are resolved transparently.
- @param f the path to return the target of
- @return The un-interpreted target of the symbolic link.
-
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If path <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If the given path does not refer to a symlink
- or an I/O error occurred]]>
- </doc>
- </method>
- <method name="getFsStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a status object describing the use and capacity of the
- file system denoted by the Parh argument p.
- If the file system has multiple partitions, the
- use and capacity of the partition pointed to by the specified
- path is reflected.
-
- @param f Path for which status should be obtained. null means the
- root partition of the default file system.
- @return a FsStatus object
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="createSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.fs.Path"/>
- <param name="link" type="org.apache.hadoop.fs.Path"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Creates a symbolic link to an existing file. An exception is thrown if
- the symlink exits, the user does not have permission to create symlink,
- or the underlying file system does not support symlinks.
-
- Symlink permissions are ignored, access to a symlink is determined by
- the permissions of the symlink target.
-
- Symlinks in paths leading up to the final path component are resolved
- transparently. If the final path component refers to a symlink some
- functions operate on the symlink itself, these are:
- - delete(f) and deleteOnExit(f) - Deletes the symlink.
- - rename(src, dst) - If src refers to a symlink, the symlink is
- renamed. If dst refers to a symlink, the symlink is over-written.
- - getLinkTarget(f) - Returns the target of the symlink.
- - getFileLinkStatus(f) - Returns a FileStatus object describing
- the symlink.
- Some functions, create() and mkdir(), expect the final path component
- does not exist. If they are given a path that refers to a symlink that
- does exist they behave as if the path referred to an existing file or
- directory. All other functions fully resolve, ie follow, the symlink.
- These are: open, setReplication, setOwner, setTimes, setWorkingDirectory,
- setPermission, getFileChecksum, setVerifyChecksum, getFileBlockLocations,
- getFsStatus, getFileStatus, exists, and listStatus.
-
- Symlink targets are stored as given to createSymlink, assuming the
- underlying file system is capable of storing a fully qualified URI.
- Dangling symlinks are permitted. FileContext supports four types of
- symlink targets, and resolves them as follows
- <pre>
- Given a path referring to a symlink of form:
-
- <---X--->
- fs://host/A/B/link
- <-----Y----->
-
- In this path X is the scheme and authority that identify the file system,
- and Y is the path leading up to the final path component "link". If Y is
- a symlink itself then let Y' be the target of Y and X' be the scheme and
- authority of Y'. Symlink targets may:
-
- 1. Fully qualified URIs
-
- fs://hostX/A/B/file Resolved according to the target file system.
-
- 2. Partially qualified URIs (eg scheme but no host)
-
- fs:///A/B/file Resolved according to the target file system. Eg resolving
- a symlink to hdfs:///A results in an exception because
- HDFS URIs must be fully qualified, while a symlink to
- file:///A will not since Hadoop's local file systems
- require partially qualified URIs.
-
- 3. Relative paths
-
- path Resolves to [Y'][path]. Eg if Y resolves to hdfs://host/A and path
- is "../B/file" then [Y'][path] is hdfs://host/B/file
-
- 4. Absolute paths
-
- path Resolves to [X'][path]. Eg if Y resolves hdfs://host/A/B and path
- is "/file" then [X][path] is hdfs://host/file
- </pre>
-
- @param target the target of the symbolic link
- @param link the path to be created that points to target
- @param createParent if true then missing parent dirs are created if
- false then parent must exist
- @throws AccessControlException If access is denied
- @throws FileAlreadyExistsException If file <code>linkcode> already exists
- @throws FileNotFoundException If <code>target</code> does not exist
- @throws ParentNotDirectoryException If parent of <code>link</code> is not a
- directory.
- @throws UnsupportedFileSystemException If file system for
- <code>target</code> or <code>link</code> is not supported
- @throws IOException If an I/O error occurred]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the statuses of the files/directories in the given path if the path is
- a directory.
-
- @param f is the path
- @return an iterator that traverses statuses of the files/directories
- in the given path
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="listCorruptFileBlocks" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[@return an iterator over the corrupt files under the given path
- (may contain duplicates if a file has more than one corrupt block)
- @throws IOException]]>
- </doc>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the statuses of the files/directories in the given path if the path is
- a directory.
- Return the file's status and block locations If the path is a file.
-
- If a returned status is a file, it contains the file's block locations.
-
- @param f is the path
- @return an iterator that traverses statuses of the files/directories
- in the given path
- If any IO exception (for example the input directory gets deleted while
- listing is being executed), next() or hasNext() of the returned iterator
- may throw a RuntimeException with the io exception as the cause.
- @throws AccessControlException If access is denied
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="deleteOnExit" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark a path to be deleted on JVM shutdown.
-
- @param f the existing path to delete.
- @return true if deleteOnExit is successful, otherwise false.
- @throws AccessControlException If access is denied
- @throws UnsupportedFileSystemException If file system for <code>f</code> is
- not supported
- @throws IOException If an I/O error occurred
-
- Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="util" return="org.apache.hadoop.fs.FileContext.Util"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="resolve" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Resolves all symbolic links in the specified path.
- Returns the new path object.]]>
- </doc>
- </method>
- <method name="resolveIntermediate" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Resolves all symbolic links in the specified path leading up
- to, but not including the final path component.
- @param f path to resolve
- @return the new path object.]]>
- </doc>
- </method>
- <method name="getStatistics" return="org.apache.hadoop.fs.FileSystem.Statistics"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <doc>
- <![CDATA[Get the statistics for a particular file system
-
- @param uri
- the uri to lookup the statistics. Only scheme and authority part
- of the uri are used as the key to store and lookup.
- @return a statistics object]]>
- </doc>
- </method>
- <method name="clearStatistics"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Clears all the statistics stored in AbstractFileSystem, for all the file
- systems.]]>
- </doc>
- </method>
- <method name="printStatistics"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Prints the statistics to standard output. File System is identified by the
- scheme and authority.]]>
- </doc>
- </method>
- <method name="getAllStatistics" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return Map of uri and statistics for each filesystem instantiated. The uri
- consists of scheme and authority for the filesystem.]]>
- </doc>
- </method>
- <method name="modifyAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Modifies ACL entries of files and directories. This method can add new ACL
- entries or modify the permissions on existing ACL entries. All existing
- ACL entries that are not specified in this call are retained without
- changes. (Modifications are merged into the current ACL.)
- @param path Path to modify
- @param aclSpec List<AclEntry> describing modifications
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="removeAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes ACL entries from files and directories. Other ACL entries are
- retained.
- @param path Path to modify
- @param aclSpec List<AclEntry> describing entries to remove
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="removeDefaultAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes all default ACL entries from files and directories.
- @param path Path to modify
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="removeAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes all but the base ACL entries of files and directories. The entries
- for user, group, and others are retained for compatibility with permission
- bits.
- @param path Path to modify
- @throws IOException if an ACL could not be removed]]>
- </doc>
- </method>
- <method name="setAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Fully replaces ACL of files and directories, discarding all existing
- entries.
- @param path Path to modify
- @param aclSpec List<AclEntry> describing modifications, must include entries
- for user, group, and others for compatibility with permission bits.
- @throws IOException if an ACL could not be modified]]>
- </doc>
- </method>
- <method name="getAclStatus" return="org.apache.hadoop.fs.permission.AclStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Gets the ACLs of files and directories.
- @param path Path to get
- @return RemoteIterator<AclStatus> which returns each AclStatus
- @throws IOException if an ACL could not be read]]>
- </doc>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to modify
- @param name xattr name.
- @param value xattr value.
- @throws IOException]]>
- </doc>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to modify
- @param name xattr name.
- @param value xattr value.
- @param flag xattr set flag
- @throws IOException]]>
- </doc>
- </method>
- <method name="getXAttr" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get an xattr for a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attribute
- @param name xattr name.
- @return byte[] xattr value.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattrs for a file or directory.
- Only those xattrs for which the logged-in user has permissions to view
- are returned.
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @return Map<String, byte[]> describing the XAttrs of the file or directory
- @throws IOException]]>
- </doc>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="names" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattrs for a file or directory.
- Only those xattrs for which the logged-in user has permissions to view
- are returned.
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @param names XAttr names.
- @return Map<String, byte[]> describing the XAttrs of the file or directory
- @throws IOException]]>
- </doc>
- </method>
- <method name="removeXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Remove an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to remove extended attribute
- @param name xattr name
- @throws IOException]]>
- </doc>
- </method>
- <method name="listXAttrs" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattr names for a file or directory.
- Only those xattr names which the logged-in user has permissions to view
- are returned.
- <p/>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @return List<String> of the XAttr names of the file or directory
- @throws IOException]]>
- </doc>
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a snapshot with a default name.
- @param path The directory where snapshots will be taken.
- @return the snapshot path.
- @throws IOException If an I/O error occurred
- <p>Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a snapshot.
- @param path The directory where snapshots will be taken.
- @param snapshotName The name of the snapshot
- @return the snapshot path.
- @throws IOException If an I/O error occurred
- <p>Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="renameSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotOldName" type="java.lang.String"/>
- <param name="snapshotNewName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Rename a snapshot.
- @param path The directory path where the snapshot was taken
- @param snapshotOldName Old name of the snapshot
- @param snapshotNewName New name of the snapshot
- @throws IOException If an I/O error occurred
- <p>Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="deleteSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete a snapshot of a directory.
- @param path The directory that the to-be-deleted snapshot belongs to
- @param snapshotName The name of the snapshot
- @throws IOException If an I/O error occurred
- <p>Exceptions applicable to file systems accessed over RPC:
- @throws RpcClientException If an exception occurred in the RPC client
- @throws RpcServerException If an exception occurred in the RPC server
- @throws UnexpectedServerException If server implementation throws
- undeclared exception to RPC server]]>
- </doc>
- </method>
- <method name="setStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="policyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the storage policy for a given file or directory.
- @param path file or directory path.
- @param policyName the name of the target storage policy. The list
- of supported Storage policies can be retrieved
- via {@link #getAllStoragePolicies}.]]>
- </doc>
- </method>
- <method name="unsetStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Unset the storage policy set for a given file or directory.
- @param src file or directory path.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getStoragePolicy" return="org.apache.hadoop.fs.BlockStoragePolicySpi"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Query the effective storage policy ID for the given file or directory.
- @param path file or directory path.
- @return storage policy for give file.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getAllStoragePolicies" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Retrieve all the storage policies supported by this file system.
- @return all storage policies supported by this filesystem.
- @throws IOException]]>
- </doc>
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_PERM" type="org.apache.hadoop.fs.permission.FsPermission"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default permission for directory and symlink
- In previous versions, this default permission was also used to
- create files, so files created end up with ugo+x permission.
- See HADOOP-9155 for detail.
- Two new constants are added to solve this, please use
- {@link FileContext#DIR_DEFAULT_PERM} for directory, and use
- {@link FileContext#FILE_DEFAULT_PERM} for file.
- This constant is kept for compatibility.]]>
- </doc>
- </field>
- <field name="DIR_DEFAULT_PERM" type="org.apache.hadoop.fs.permission.FsPermission"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default permission for directory]]>
- </doc>
- </field>
- <field name="FILE_DEFAULT_PERM" type="org.apache.hadoop.fs.permission.FsPermission"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default permission for file]]>
- </doc>
- </field>
- <field name="SHUTDOWN_HOOK_PRIORITY" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Priority of the FileContext shutdown hook.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[The FileContext class provides an interface to the application writer for
- using the Hadoop file system.
- It provides a set of methods for the usual operation: create, open,
- list, etc
-
- <p>
- <b> *** Path Names *** </b>
- <p>
-
- The Hadoop file system supports a URI name space and URI names.
- It offers a forest of file systems that can be referenced using fully
- qualified URIs.
- Two common Hadoop file systems implementations are
- <ul>
- <li> the local file system: file:///path
- <li> the hdfs file system hdfs://nnAddress:nnPort/path
- </ul>
-
- While URI names are very flexible, it requires knowing the name or address
- of the server. For convenience one often wants to access the default system
- in one's environment without knowing its name/address. This has an
- additional benefit that it allows one to change one's default fs
- (e.g. admin moves application from cluster1 to cluster2).
- <p>
-
- To facilitate this, Hadoop supports a notion of a default file system.
- The user can set his default file system, although this is
- typically set up for you in your environment via your default config.
- A default file system implies a default scheme and authority; slash-relative
- names (such as /for/bar) are resolved relative to that default FS.
- Similarly a user can also have working-directory-relative names (i.e. names
- not starting with a slash). While the working directory is generally in the
- same default FS, the wd can be in a different FS.
- <p>
- Hence Hadoop path names can be one of:
- <ul>
- <li> fully qualified URI: scheme://authority/path
- <li> slash relative names: /path relative to the default file system
- <li> wd-relative names: path relative to the working dir
- </ul>
- Relative paths with scheme (scheme:foo/bar) are illegal.
-
- <p>
- <b>****The Role of the FileContext and configuration defaults****</b>
- <p>
- The FileContext provides file namespace context for resolving file names;
- it also contains the umask for permissions, In that sense it is like the
- per-process file-related state in Unix system.
- These two properties
- <ul>
- <li> default file system i.e your slash)
- <li> umask
- </ul>
- in general, are obtained from the default configuration file
- in your environment, (@see {@link Configuration}).
-
- No other configuration parameters are obtained from the default config as
- far as the file context layer is concerned. All file system instances
- (i.e. deployments of file systems) have default properties; we call these
- server side (SS) defaults. Operation like create allow one to select many
- properties: either pass them in as explicit parameters or use
- the SS properties.
- <p>
- The file system related SS defaults are
- <ul>
- <li> the home directory (default is "/user/userName")
- <li> the initial wd (only for local fs)
- <li> replication factor
- <li> block size
- <li> buffer size
- <li> encryptDataTransfer
- <li> checksum option. (checksumType and bytesPerChecksum)
- </ul>
- <p>
- <b> *** Usage Model for the FileContext class *** </b>
- <p>
- Example 1: use the default config read from the $HADOOP_CONFIG/core.xml.
- Unspecified values come from core-defaults.xml in the release jar.
- <ul>
- <li> myFContext = FileContext.getFileContext(); // uses the default config
- // which has your default FS
- <li> myFContext.create(path, ...);
- <li> myFContext.setWorkingDir(path)
- <li> myFContext.open (path, ...);
- </ul>
- Example 2: Get a FileContext with a specific URI as the default FS
- <ul>
- <li> myFContext = FileContext.getFileContext(URI)
- <li> myFContext.create(path, ...);
- ...
- </ul>
- Example 3: FileContext with local file system as the default
- <ul>
- <li> myFContext = FileContext.getLocalFSFileContext()
- <li> myFContext.create(path, ...);
- <li> ...
- </ul>
- Example 4: Use a specific config, ignoring $HADOOP_CONFIG
- Generally you should not need use a config unless you are doing
- <ul>
- <li> configX = someConfigSomeOnePassedToYou.
- <li> myFContext = getFileContext(configX); // configX is not changed,
- // is passed down
- <li> myFContext.create(path, ...);
- <li>...
- </ul>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FileContext -->
- <!-- start class org.apache.hadoop.fs.FileStatus -->
- <class name="FileStatus" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <implements name="java.lang.Comparable"/>
- <constructor name="FileStatus"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FileStatus" type="long, boolean, int, long, long, org.apache.hadoop.fs.Path"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FileStatus" type="long, boolean, int, long, long, long, org.apache.hadoop.fs.permission.FsPermission, java.lang.String, java.lang.String, org.apache.hadoop.fs.Path"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor for file systems on which symbolic links are not supported]]>
- </doc>
- </constructor>
- <constructor name="FileStatus" type="long, boolean, int, long, long, long, org.apache.hadoop.fs.permission.FsPermission, java.lang.String, java.lang.String, org.apache.hadoop.fs.Path, org.apache.hadoop.fs.Path"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FileStatus" type="org.apache.hadoop.fs.FileStatus"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy constructor.
- @param other FileStatus to copy]]>
- </doc>
- </constructor>
- <method name="getLen" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the length of this file, in bytes.
- @return the length of this file, in bytes.]]>
- </doc>
- </method>
- <method name="isFile" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Is this a file?
- @return true if this is a file]]>
- </doc>
- </method>
- <method name="isDirectory" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Is this a directory?
- @return true if this is a directory]]>
- </doc>
- </method>
- <method name="isDir" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link FileStatus#isFile()},
- {@link FileStatus#isDirectory()}, and {@link FileStatus#isSymlink()}
- instead.">
- <doc>
- <![CDATA[Old interface, instead use the explicit {@link FileStatus#isFile()},
- {@link FileStatus#isDirectory()}, and {@link FileStatus#isSymlink()}
- @return true if this is a directory.
- @deprecated Use {@link FileStatus#isFile()},
- {@link FileStatus#isDirectory()}, and {@link FileStatus#isSymlink()}
- instead.]]>
- </doc>
- </method>
- <method name="isSymlink" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Is this a symbolic link?
- @return true if this is a symbolic link]]>
- </doc>
- </method>
- <method name="getBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the block size of the file.
- @return the number of bytes]]>
- </doc>
- </method>
- <method name="getReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the replication factor of a file.
- @return the replication factor of a file.]]>
- </doc>
- </method>
- <method name="getModificationTime" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the modification time of the file.
- @return the modification time of file in milliseconds since January 1, 1970 UTC.]]>
- </doc>
- </method>
- <method name="getAccessTime" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the access time of the file.
- @return the access time of file in milliseconds since January 1, 1970 UTC.]]>
- </doc>
- </method>
- <method name="getPermission" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get FsPermission associated with the file.
- @return permssion. If a filesystem does not have a notion of permissions
- or if permissions could not be determined, then default
- permissions equivalent of "rwxrwxrwx" is returned.]]>
- </doc>
- </method>
- <method name="isEncrypted" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Tell whether the underlying file or directory is encrypted or not.
- @return true if the underlying file is encrypted.]]>
- </doc>
- </method>
- <method name="getOwner" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the owner of the file.
- @return owner of the file. The string could be empty if there is no
- notion of owner of a file in a filesystem or if it could not
- be determined (rare).]]>
- </doc>
- </method>
- <method name="getGroup" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the group associated with the file.
- @return group for the file. The string could be empty if there is no
- notion of group of a file in a filesystem or if it could not
- be determined (rare).]]>
- </doc>
- </method>
- <method name="getPath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setPath"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <doc>
- <![CDATA[Sets permission.
- @param permission if permission is null, default value is set]]>
- </doc>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="owner" type="java.lang.String"/>
- <doc>
- <![CDATA[Sets owner.
- @param owner if it is null, default value is set]]>
- </doc>
- </method>
- <method name="setGroup"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="group" type="java.lang.String"/>
- <doc>
- <![CDATA[Sets group.
- @param group if it is null, default value is set]]>
- </doc>
- </method>
- <method name="getSymlink" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[@return The contents of the symbolic link.]]>
- </doc>
- </method>
- <method name="setSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.fs.FileStatus"/>
- <doc>
- <![CDATA[Compare this FileStatus to another FileStatus
- @param o the FileStatus to be compared.
- @return a negative integer, zero, or a positive integer as this object
- is less than, equal to, or greater than the specified object.]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Compare if this object is equal to another object
- @param o the object to be compared.
- @return true if two file status has the same path name; false if not.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a hash code value for the object, which is defined as
- the hash code of the path name.
- @return a hash code value for the path name.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Interface that represents the client side information for a file.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FileStatus -->
- <!-- start class org.apache.hadoop.fs.FileSystem -->
- <class name="FileSystem" extends="org.apache.hadoop.conf.Configured"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.io.Closeable"/>
- <constructor name="FileSystem"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <method name="get" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="user" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Get a FileSystem instance based on the uri, the passed in
- configuration and the user.
- @param uri of the filesystem
- @param conf the configuration to use
- @param user to perform the get as
- @return the filesystem instance
- @throws IOException failure to load
- @throws InterruptedException If the {@code UGI.doAs()} call was
- somehow interrupted.]]>
- </doc>
- </method>
- <method name="get" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns the configured FileSystem implementation.
- @param conf the configuration to use]]>
- </doc>
- </method>
- <method name="getDefaultUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Get the default FileSystem URI from a configuration.
- @param conf the configuration to use
- @return the uri of the default filesystem]]>
- </doc>
- </method>
- <method name="setDefaultUri"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="uri" type="java.net.URI"/>
- <doc>
- <![CDATA[Set the default FileSystem URI in a configuration.
- @param conf the configuration to alter
- @param uri the new default filesystem uri]]>
- </doc>
- </method>
- <method name="setDefaultUri"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="uri" type="java.lang.String"/>
- <doc>
- <![CDATA[Set the default FileSystem URI in a configuration.
- @param conf the configuration to alter
- @param uri the new default filesystem uri]]>
- </doc>
- </method>
- <method name="initialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Initialize a FileSystem.
- Called after the new FileSystem instance is constructed, and before it
- is ready for use.
- FileSystem implementations overriding this method MUST forward it to
- their superclass, though the order in which it is done, and whether
- to alter the configuration before the invocation are options of the
- subclass.
- @param name a URI whose authority section names the host, port, etc.
- for this FileSystem
- @param conf the configuration
- @throws IOException on any failure to initialize this instance.
- @throws IllegalArgumentException if the URI is considered invalid.]]>
- </doc>
- </method>
- <method name="getScheme" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the protocol scheme for this FileSystem.
- <p>
- This implementation throws an <code>UnsupportedOperationException</code>.
- @return the protocol scheme for this FileSystem.
- @throws UnsupportedOperationException if the operation is unsupported
- (default).]]>
- </doc>
- </method>
- <method name="getUri" return="java.net.URI"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a URI which identifies this FileSystem.
- @return the URI of this filesystem.]]>
- </doc>
- </method>
- <method name="getCanonicalUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a canonicalized form of this FileSystem's URI.
- The default implementation simply calls {@link #canonicalizeUri(URI)}
- on the filesystem's own URI, so subclasses typically only need to
- implement that method.
- @see #canonicalizeUri(URI)]]>
- </doc>
- </method>
- <method name="canonicalizeUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <doc>
- <![CDATA[Canonicalize the given URI.
- This is implementation-dependent, and may for example consist of
- canonicalizing the hostname using DNS and adding the default
- port if not specified.
- The default implementation simply fills in the default port if
- not specified and if {@link #getDefaultPort()} returns a
- default port.
- @return URI
- @see NetUtils#getCanonicalUri(URI, int)]]>
- </doc>
- </method>
- <method name="getDefaultPort" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the default port for this FileSystem.
- @return the default port or 0 if there isn't one]]>
- </doc>
- </method>
- <method name="getFSofPath" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="absOrFqPath" type="org.apache.hadoop.fs.Path"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getCanonicalServiceName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get a canonical service name for this FileSystem.
- The token cache is the only user of the canonical service name,
- and uses it to lookup this FileSystem's service tokens.
- If the file system provides a token of its own then it must have a canonical
- name, otherwise the canonical name can be null.
- Default implementation: If the FileSystem has child file systems
- (such as an embedded file system) then it is assumed that the FS has no
- tokens of its own and hence returns a null name; otherwise a service
- name is built using Uri and port.
- @return a service string that uniquely identifies this file system, null
- if the filesystem does not implement tokens
- @see SecurityUtil#buildDTServiceName(URI, int)]]>
- </doc>
- </method>
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="call {@link #getUri()} instead.">
- <doc>
- <![CDATA[@deprecated call {@link #getUri()} instead.]]>
- </doc>
- </method>
- <method name="getNamed" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="call {@link #get(URI, Configuration)} instead.">
- <param name="name" type="java.lang.String"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[@deprecated call {@link #get(URI, Configuration)} instead.]]>
- </doc>
- </method>
- <method name="getLocal" return="org.apache.hadoop.fs.LocalFileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the local FileSystem.
- @param conf the configuration to configure the FileSystem with
- if it is newly instantiated.
- @return a LocalFileSystem
- @throws IOException if somehow the local FS cannot be instantiated.]]>
- </doc>
- </method>
- <method name="get" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get a FileSystem for this URI's scheme and authority.
- <ol>
- <li>
- If the configuration has the property
- {@code "fs.$SCHEME.impl.disable.cache"} set to true,
- a new instance will be created, initialized with the supplied URI and
- configuration, then returned without being cached.
- </li>
- <li>
- If the there is a cached FS instance matching the same URI, it will
- be returned.
- </li>
- <li>
- Otherwise: a new FS instance will be created, initialized with the
- configuration and URI, cached and returned to the caller.
- </li>
- </ol>
- @throws IOException if the FileSystem cannot be instantiated.]]>
- </doc>
- </method>
- <method name="newInstance" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="user" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Returns the FileSystem for this URI's scheme and authority and the
- given user. Internally invokes {@link #newInstance(URI, Configuration)}
- @param uri of the filesystem
- @param conf the configuration to use
- @param user to perform the get as
- @return filesystem instance
- @throws IOException if the FileSystem cannot be instantiated.
- @throws InterruptedException If the {@code UGI.doAs()} call was
- somehow interrupted.]]>
- </doc>
- </method>
- <method name="newInstance" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="config" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns the FileSystem for this URI's scheme and authority.
- The entire URI is passed to the FileSystem instance's initialize method.
- This always returns a new FileSystem object.
- @param uri FS URI
- @param config configuration to use
- @return the new FS instance
- @throws IOException FS creation or initialization failure.]]>
- </doc>
- </method>
- <method name="newInstance" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a unique configured FileSystem implementation for the default
- filesystem of the supplied configuration.
- This always returns a new FileSystem object.
- @param conf the configuration to use
- @return the new FS instance
- @throws IOException FS creation or initialization failure.]]>
- </doc>
- </method>
- <method name="newInstanceLocal" return="org.apache.hadoop.fs.LocalFileSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get a unique local FileSystem object.
- @param conf the configuration to configure the FileSystem with
- @return a new LocalFileSystem object.
- @throws IOException FS creation or initialization failure.]]>
- </doc>
- </method>
- <method name="closeAll"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Close all cached FileSystem instances. After this operation, they
- may not be used in any operations.
- @throws IOException a problem arose closing one or more filesystem.]]>
- </doc>
- </method>
- <method name="closeAllForUGI"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ugi" type="org.apache.hadoop.security.UserGroupInformation"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Close all cached FileSystem instances for a given UGI.
- Be sure those filesystems are not used anymore.
- @param ugi user group info to close
- @throws IOException a problem arose closing one or more filesystem.]]>
- </doc>
- </method>
- <method name="makeQualified" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Qualify a path to one which uses this FileSystem and, if relative,
- made absolute.
- @param path to qualify.
- @return this path if it contains a scheme and authority and is absolute, or
- a new path that includes a path and authority and is fully qualified
- @see Path#makeQualified(URI, Path)
- @throws IllegalArgumentException if the path has a schema/URI different
- from this FileSystem.]]>
- </doc>
- </method>
- <method name="addDelegationTokens" return="org.apache.hadoop.security.token.Token[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="renewer" type="java.lang.String"/>
- <param name="credentials" type="org.apache.hadoop.security.Credentials"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Obtain all delegation tokens used by this FileSystem that are not
- already present in the given Credentials. Existing tokens will neither
- be verified as valid nor having the given renewer. Missing tokens will
- be acquired and added to the given Credentials.
- Default Impl: works for simple FS with its own token
- and also for an embedded FS whose tokens are those of its
- child FileSystems (i.e. the embedded FS has no tokens of its own).
- @param renewer the user allowed to renew the delegation tokens
- @param credentials cache in which to add new delegation tokens
- @return list of new delegation tokens
- @throws IOException]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a file with the provided permission.
- The permission of the file is set to be the provided permission as in
- setPermission, not permission&~umask
- The HDFS implementation is implemented using two RPCs.
- It is understood that it is inefficient,
- but the implementation is thread-safe. The other option is to change the
- value of umask in configuration to be 0, but it is not thread-safe.
- @param fs FileSystem
- @param file the name of the file to be created
- @param permission the permission of the file
- @return an output stream
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a directory with the provided permission.
- The permission of the directory is set to be the provided permission as in
- setPermission, not permission&~umask
- @see #create(FileSystem, Path, FsPermission)
- @param fs FileSystem handle
- @param dir the name of the directory to be created
- @param permission the permission of the directory
- @return true if the directory creation succeeds; false otherwise
- @throws IOException A problem creating the directories.]]>
- </doc>
- </method>
- <method name="checkPath"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Check that a Path belongs to this FileSystem.
- The base implementation performs case insensitive equality checks
- of the URIs' schemes and authorities. Subclasses may implement slightly
- different checks.
- @param path to check
- @throws IllegalArgumentException if the path is not considered to be
- part of this FileSystem.]]>
- </doc>
- </method>
- <method name="getFileBlockLocations" return="org.apache.hadoop.fs.BlockLocation[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.FileStatus"/>
- <param name="start" type="long"/>
- <param name="len" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return an array containing hostnames, offset and size of
- portions of the given file. For nonexistent
- file or regions, {@code null} is returned.
- <pre>
- if f == null :
- result = null
- elif f.getLen() <= start:
- result = []
- else result = [ locations(FS, b) for b in blocks(FS, p, s, s+l)]
- </pre>
- This call is most helpful with and distributed filesystem
- where the hostnames of machines that contain blocks of the given file
- can be determined.
- The default implementation returns an array containing one element:
- <pre>
- BlockLocation( { "localhost:50010" }, { "localhost" }, 0, file.getLen())
- </pre>>
- @param file FilesStatus to get data from
- @param start offset into the given file
- @param len length for which to get locations for
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getFileBlockLocations" return="org.apache.hadoop.fs.BlockLocation[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="start" type="long"/>
- <param name="len" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return an array containing hostnames, offset and size of
- portions of the given file. For a nonexistent
- file or regions, {@code null} is returned.
- This call is most helpful with location-aware distributed
- filesystems, where it returns hostnames of machines that
- contain the given file.
- A FileSystem will normally return the equivalent result
- of passing the {@code FileStatus} of the path to
- {@link #getFileBlockLocations(FileStatus, long, long)}
- @param p path is used to identify an FS since an FS could have
- another FS that it could be delegating the call to
- @param start offset into the given file
- @param len length for which to get locations for
- @throws FileNotFoundException when the path does not exist
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="use {@link #getServerDefaults(Path)} instead">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a set of server default configuration values.
- @return server default configuration values
- @throws IOException IO failure
- @deprecated use {@link #getServerDefaults(Path)} instead]]>
- </doc>
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a set of server default configuration values.
- @param p path is used to identify an FS since an FS could have
- another FS that it could be delegating the call to
- @return server default configuration values
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="resolvePath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the fully-qualified path of path, resolving the path
- through any symlinks or mount point.
- @param p path to be resolved
- @return fully qualified path
- @throws FileNotFoundException if the path is not present
- @throws IOException for any other error]]>
- </doc>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataInputStream at the indicated Path.
- @param f the file name to open
- @param bufferSize the size of the buffer to be used.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataInputStream at the indicated Path.
- @param f the file to open
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path.
- Files are overwritten by default.
- @param f the file to create
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path.
- @param f the file to create
- @param overwrite if a file with this name already exists, then if true,
- the file will be overwritten, and if false an exception will be thrown.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path with write-progress
- reporting.
- Files are overwritten by default.
- @param f the file to create
- @param progress to report progress
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path.
- Files are overwritten by default.
- @param f the file to create
- @param replication the replication factor
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path with write-progress
- reporting.
- Files are overwritten by default.
- @param f the file to create
- @param replication the replication factor
- @param progress to report progress
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path.
- @param f the file to create
- @param overwrite if a path with this name already exists, then if true,
- the file will be overwritten, and if false an error will be thrown.
- @param bufferSize the size of the buffer to be used.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an {@link FSDataOutputStream} at the indicated Path
- with write-progress reporting.
- The frequency of callbacks is implementation-specific; it may be "none".
- @param f the path of the file to open
- @param overwrite if a file with this name already exists, then if true,
- the file will be overwritten, and if false an error will be thrown.
- @param bufferSize the size of the buffer to be used.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path.
- @param f the file name to open
- @param overwrite if a file with this name already exists, then if true,
- the file will be overwritten, and if false an error will be thrown.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path with write-progress
- reporting.
- @param f the file name to open
- @param overwrite if a file with this name already exists, then if true,
- the file will be overwritten, and if false an error will be thrown.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path with write-progress
- reporting.
- @param f the file name to open
- @param permission file permission
- @param overwrite if a file with this name already exists, then if true,
- the file will be overwritten, and if false an error will be thrown.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @param blockSize block size
- @param progress the progress reporter
- @throws IOException IO failure
- @see #setPermission(Path, FsPermission)]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flags" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path with write-progress
- reporting.
- @param f the file name to open
- @param permission file permission
- @param flags {@link CreateFlag}s to use for this stream.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @param blockSize block size
- @param progress the progress reporter
- @throws IOException IO failure
- @see #setPermission(Path, FsPermission)]]>
- </doc>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flags" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="checksumOpt" type="org.apache.hadoop.fs.Options.ChecksumOpt"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create an FSDataOutputStream at the indicated Path with a custom
- checksum option.
- @param f the file name to open
- @param permission file permission
- @param flags {@link CreateFlag}s to use for this stream.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @param blockSize block size
- @param progress the progress reporter
- @param checksumOpt checksum parameter. If null, the values
- found in conf will be used.
- @throws IOException IO failure
- @see #setPermission(Path, FsPermission)]]>
- </doc>
- </method>
- <method name="primitiveCreate" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="absolutePermission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flag" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="checksumOpt" type="org.apache.hadoop.fs.Options.ChecksumOpt"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[This create has been added to support the FileContext that processes
- the permission with umask before calling this method.
- This a temporary method added to support the transition from FileSystem
- to FileContext for user applications.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="primitiveMkdir" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="absolutePermission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[This version of the mkdirs method assumes that the permission is absolute.
- It has been added to support the FileContext that processes the permission
- with umask before calling this method.
- This a temporary method added to support the transition from FileSystem
- to FileContext for user applications.
- @param f path
- @param absolutePermission permissions
- @return true if the directory was actually created.
- @throws IOException IO failure
- @see #mkdirs(Path, FsPermission)]]>
- </doc>
- </method>
- <method name="primitiveMkdir"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="absolutePermission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="createParent" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[This version of the mkdirs method assumes that the permission is absolute.
- It has been added to support the FileContext that processes the permission
- with umask before calling this method.
- This a temporary method added to support the transition from FileSystem
- to FileContext for user applications.]]>
- </doc>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataOutputStream at the indicated Path with write-progress
- reporting. Same as create(), except fails if parent directory doesn't
- already exist.
- @param f the file name to open
- @param overwrite if a file with this name already exists, then if true,
- the file will be overwritten, and if false an error will be thrown.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @param blockSize block size
- @param progress the progress reporter
- @throws IOException IO failure
- @see #setPermission(Path, FsPermission)]]>
- </doc>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataOutputStream at the indicated Path with write-progress
- reporting. Same as create(), except fails if parent directory doesn't
- already exist.
- @param f the file name to open
- @param permission file permission
- @param overwrite if a file with this name already exists, then if true,
- the file will be overwritten, and if false an error will be thrown.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @param blockSize block size
- @param progress the progress reporter
- @throws IOException IO failure
- @see #setPermission(Path, FsPermission)]]>
- </doc>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flags" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataOutputStream at the indicated Path with write-progress
- reporting. Same as create(), except fails if parent directory doesn't
- already exist.
- @param f the file name to open
- @param permission file permission
- @param flags {@link CreateFlag}s to use for this stream.
- @param bufferSize the size of the buffer to be used.
- @param replication required block replication for the file.
- @param blockSize block size
- @param progress the progress reporter
- @throws IOException IO failure
- @see #setPermission(Path, FsPermission)]]>
- </doc>
- </method>
- <method name="createNewFile" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Creates the given Path as a brand-new zero-length file. If
- create fails, or if it already existed, return false.
- <i>Important: the default implementation is not atomic</i>
- @param f path to use for create
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Append to an existing file (optional operation).
- Same as
- {@code append(f, getConf().getInt(IO_FILE_BUFFER_SIZE_KEY,
- IO_FILE_BUFFER_SIZE_DEFAULT), null)}
- @param f the existing file to be appended.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default).]]>
- </doc>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Append to an existing file (optional operation).
- Same as append(f, bufferSize, null).
- @param f the existing file to be appended.
- @param bufferSize the size of the buffer to be used.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default).]]>
- </doc>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Append to an existing file (optional operation).
- @param f the existing file to be appended.
- @param bufferSize the size of the buffer to be used.
- @param progress for reporting progress if it is not null.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default).]]>
- </doc>
- </method>
- <method name="concat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="trg" type="org.apache.hadoop.fs.Path"/>
- <param name="psrcs" type="org.apache.hadoop.fs.Path[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Concat existing files together.
- @param trg the path to the target destination.
- @param psrcs the paths to the sources to use for the concatenation.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default).]]>
- </doc>
- </method>
- <method name="getReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link #getFileStatus(Path)} instead">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the replication factor.
- @deprecated Use {@link #getFileStatus(Path)} instead
- @param src file name
- @return file replication
- @throws FileNotFoundException if the path does not resolve.
- @throws IOException an IO failure]]>
- </doc>
- </method>
- <method name="setReplication" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the replication for an existing file.
- If a filesystem does not support replication, it will always
- return true: the check for a file existing may be bypassed.
- This is the default behavior.
- @param src file name
- @param replication new replication
- @throws IOException
- @return true if successful, or the feature in unsupported;
- false if replication is supported but the file does not exist,
- or is a directory]]>
- </doc>
- </method>
- <method name="rename" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Renames Path src to Path dst.
- @param src path to be renamed
- @param dst new path after rename
- @throws IOException on failure
- @return true if rename is successful]]>
- </doc>
- </method>
- <method name="rename"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="options" type="org.apache.hadoop.fs.Options.Rename[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Renames Path src to Path dst
- <ul>
- <li>Fails if src is a file and dst is a directory.</li>
- <li>Fails if src is a directory and dst is a file.</li>
- <li>Fails if the parent of dst does not exist or is a file.</li>
- </ul>
- <p>
- If OVERWRITE option is not passed as an argument, rename fails
- if the dst already exists.
- <p>
- If OVERWRITE option is passed as an argument, rename overwrites
- the dst if it is a file or an empty directory. Rename fails if dst is
- a non-empty directory.
- <p>
- Note that atomicity of rename is dependent on the file system
- implementation. Please refer to the file system documentation for
- details. This default implementation is non atomic.
- <p>
- This method is deprecated since it is a temporary method added to
- support the transition from FileSystem to FileContext for user
- applications.
- @param src path to be renamed
- @param dst new path after rename
- @throws FileNotFoundException src path does not exist, or the parent
- path of dst does not exist.
- @throws FileAlreadyExistsException dest path exists and is a file
- @throws ParentNotDirectoryException if the parent path of dest is not
- a directory
- @throws IOException on failure]]>
- </doc>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Truncate the file in the indicated path to the indicated size.
- <ul>
- <li>Fails if path is a directory.</li>
- <li>Fails if path does not exist.</li>
- <li>Fails if path is not closed.</li>
- <li>Fails if new size is greater than current size.</li>
- </ul>
- @param f The path to the file to be truncated
- @param newLength The size the file is to be truncated to
- @return <code>true</code> if the file has been truncated to the desired
- <code>newLength</code> and is immediately available to be reused for
- write operations such as <code>append</code>, or
- <code>false</code> if a background process of adjusting the length of
- the last block has been started, and clients should wait for it to
- complete before proceeding with further file updates.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default).]]>
- </doc>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link #delete(Path, boolean)} instead.">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete a file/directory.
- @deprecated Use {@link #delete(Path, boolean)} instead.]]>
- </doc>
- </method>
- <method name="delete" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete a file.
- @param f the path to delete.
- @param recursive if path is a directory and set to
- true, the directory is deleted else throws an exception. In
- case of a file the recursive can be set to either true or false.
- @return true if delete is successful else false.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="deleteOnExit" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark a path to be deleted when its FileSystem is closed.
- When the JVM shuts down cleanly, all cached FileSystem objects will be
- closed automatically #these the marked paths will be deleted as a result.
- If a FileSystem instance is not cached, i.e. has been created with
- {@link #createFileSystem(URI, Configuration)}, then the paths will
- be deleted in when {@link #close()} is called on that instance.
- The path must exist in the filesystem at the time of the method call;
- it does not have to exist at the time of JVM shutdown.
- Notes
- <ol>
- <li>Clean shutdown of the JVM cannot be guaranteed.</li>
- <li>The time to shut down a FileSystem will depends on the number of
- files to delete. For filesystems where the cost of checking
- for the existence of a file/directory and the actual delete operation
- (for example: object stores) is high, the time to shutdown the JVM can be
- significantly extended by over-use of this feature.</li>
- <li>Connectivity problems with a remote filesystem may delay shutdown
- further, and may cause the files to not be deleted.</li>
- </ol>
- @param f the path to delete.
- @return true if deleteOnExit is successful, otherwise false.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="cancelDeleteOnExit" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Cancel the scheduled deletion of the path when the FileSystem is closed.
- @param f the path to cancel deletion
- @return true if the path was found in the delete-on-exit list.]]>
- </doc>
- </method>
- <method name="processDeleteOnExit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Delete all paths that were marked as delete-on-exit. This recursively
- deletes all files and directories in the specified paths.
- The time to process this operation is {@code O(paths)}, with the actual
- time dependent on the time for existence and deletion operations to
- complete, successfully or not.]]>
- </doc>
- </method>
- <method name="exists" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check if a path exists.
- @param f source path
- @return true if the path exists
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="isDirectory" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[True iff the named path is a directory.
- Note: Avoid using this method. Instead reuse the FileStatus
- returned by getFileStatus() or listStatus() methods.
- @param f path to check
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="isFile" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[True iff the named path is a regular file.
- Note: Avoid using this method. Instead reuse the FileStatus
- returned by {@link #getFileStatus(Path)} or listStatus() methods.
- @param f path to check
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getLength" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link #getFileStatus(Path)} instead.">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The number of bytes in a file.
- @return the number of bytes; 0 for a directory
- @deprecated Use {@link #getFileStatus(Path)} instead.
- @throws FileNotFoundException if the path does not resolve
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getContentSummary" return="org.apache.hadoop.fs.ContentSummary"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the {@link ContentSummary} of a given {@link Path}.
- @param f path to use
- @throws FileNotFoundException if the path does not resolve
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getQuotaUsage" return="org.apache.hadoop.fs.QuotaUsage"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the {@link QuotaUsage} of a given {@link Path}.
- @param f path to use
- @return the quota usage
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the statuses of the files/directories in the given path if the path is
- a directory.
- <p>
- Does not guarantee to return the List of files/directories status in a
- sorted order.
- @param f given path
- @return the statuses of the files/directories in the given patch
- @throws FileNotFoundException when the path does not exist
- @throws IOException see specific implementation]]>
- </doc>
- </method>
- <method name="listCorruptFileBlocks" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List corrupted file blocks.
- @return an iterator over the corrupt files under the given path
- (may contain duplicates if a file has more than one corrupt block)
- @throws UnsupportedOperationException if the operation is unsupported
- (default).
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="filter" type="org.apache.hadoop.fs.PathFilter"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Filter files/directories in the given path using the user-supplied path
- filter.
- <p>
- Does not guarantee to return the List of files/directories status in a
- sorted order.
- @param f
- a path name
- @param filter
- the user-supplied path filter
- @return an array of FileStatus objects for the files under the given path
- after applying the filter
- @throws FileNotFoundException when the path does not exist
- @throws IOException see specific implementation]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="files" type="org.apache.hadoop.fs.Path[]"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Filter files/directories in the given list of paths using default
- path filter.
- <p>
- Does not guarantee to return the List of files/directories status in a
- sorted order.
- @param files
- a list of paths
- @return a list of statuses for the files under the given paths after
- applying the filter default Path filter
- @throws FileNotFoundException when the path does not exist
- @throws IOException see specific implementation]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="files" type="org.apache.hadoop.fs.Path[]"/>
- <param name="filter" type="org.apache.hadoop.fs.PathFilter"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Filter files/directories in the given list of paths using user-supplied
- path filter.
- <p>
- Does not guarantee to return the List of files/directories status in a
- sorted order.
- @param files
- a list of paths
- @param filter
- the user-supplied path filter
- @return a list of statuses for the files under the given paths after
- applying the filter
- @throws FileNotFoundException when the path does not exist
- @throws IOException see specific implementation]]>
- </doc>
- </method>
- <method name="globStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="pathPattern" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[<p>Return all the files that match filePattern and are not checksum
- files. Results are sorted by their names.
- <p>
- A filename pattern is composed of <i>regular</i> characters and
- <i>special pattern matching</i> characters, which are:
- <dl>
- <dd>
- <dl>
- <p>
- <dt> <tt> ? </tt>
- <dd> Matches any single character.
- <p>
- <dt> <tt> * </tt>
- <dd> Matches zero or more characters.
- <p>
- <dt> <tt> [<i>abc</i>] </tt>
- <dd> Matches a single character from character set
- <tt>{<i>a,b,c</i>}</tt>.
- <p>
- <dt> <tt> [<i>a</i>-<i>b</i>] </tt>
- <dd> Matches a single character from the character range
- <tt>{<i>a...b</i>}</tt>. Note that character <tt><i>a</i></tt> must be
- lexicographically less than or equal to character <tt><i>b</i></tt>.
- <p>
- <dt> <tt> [^<i>a</i>] </tt>
- <dd> Matches a single character that is not from character set or range
- <tt>{<i>a</i>}</tt>. Note that the <tt>^</tt> character must occur
- immediately to the right of the opening bracket.
- <p>
- <dt> <tt> \<i>c</i> </tt>
- <dd> Removes (escapes) any special meaning of character <i>c</i>.
- <p>
- <dt> <tt> {ab,cd} </tt>
- <dd> Matches a string from the string set <tt>{<i>ab, cd</i>} </tt>
- <p>
- <dt> <tt> {ab,c{de,fh}} </tt>
- <dd> Matches a string from the string set <tt>{<i>ab, cde, cfh</i>}</tt>
- </dl>
- </dd>
- </dl>
- @param pathPattern a regular expression specifying a pth pattern
- @return an array of paths that match the path pattern
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="globStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="pathPattern" type="org.apache.hadoop.fs.Path"/>
- <param name="filter" type="org.apache.hadoop.fs.PathFilter"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return an array of {@link FileStatus} objects whose path names match
- {@code pathPattern}
- and is accepted by the user-supplied path filter. Results are sorted by
- their path names.
- Return
- @param pathPattern
- a regular expression specifying the path pattern
- @param filter
- a user-supplied path filter
- @return an array of FileStatus objects.
- null if pathPattern has no glob and the path does not exist.
- an empty array if pathPattern has a glob and no path matches it.
- @throws IOException if any I/O error occurs when fetching file status]]>
- </doc>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the statuses of the files/directories in the given path if the path is
- a directory.
- Return the file's status and block locations If the path is a file.
- If a returned status is a file, it contains the file's block locations.
- @param f is the path
- @return an iterator that traverses statuses of the files/directories
- in the given path
- @throws FileNotFoundException If <code>f</code> does not exist
- @throws IOException If an I/O error occurred]]>
- </doc>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="filter" type="org.apache.hadoop.fs.PathFilter"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List a directory.
- The returned results include its block location if it is a file
- The results are filtered by the given path filter
- @param f a path
- @param filter a path filter
- @return an iterator that traverses statuses of the files/directories
- in the given path
- @throws FileNotFoundException if <code>f</code> does not exist
- @throws IOException if any I/O error occurred]]>
- </doc>
- </method>
- <method name="listStatusIterator" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a remote iterator so that followup calls are made on demand
- while consuming the entries. Each FileSystem implementation should
- override this method and provide a more efficient implementation, if
- possible.
- Does not guarantee to return the iterator that traverses statuses
- of the files in a sorted order.
- @param p target path
- @return remote iterator
- @throws FileNotFoundException if <code>p</code> does not exist
- @throws IOException if any I/O error occurred]]>
- </doc>
- </method>
- <method name="listFiles" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the statuses and block locations of the files in the given path.
- Does not guarantee to return the iterator that traverses statuses
- of the files in a sorted order.
- <pre>
- If the path is a directory,
- if recursive is false, returns files in the directory;
- if recursive is true, return files in the subtree rooted at the path.
- If the path is a file, return the file's status and block locations.
- </pre>
- @param f is the path
- @param recursive if the subdirectories need to be traversed recursively
- @return an iterator that traverses statuses of the files
- @throws FileNotFoundException when the path does not exist;
- @throws IOException see specific implementation]]>
- </doc>
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the current user's home directory in this FileSystem.
- The default implementation returns {@code "/user/$USER/"}.]]>
- </doc>
- </method>
- <method name="setWorkingDirectory"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="new_dir" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Set the current working directory for the given FileSystem. All relative
- paths will be resolved relative to it.
- @param new_dir Path of new working directory]]>
- </doc>
- </method>
- <method name="getWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the current working directory for the given FileSystem
- @return the directory pathname]]>
- </doc>
- </method>
- <method name="getInitialWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Note: with the new FileContext class, getWorkingDirectory()
- will be removed.
- The working directory is implemented in FileContext.
- Some FileSystems like LocalFileSystem have an initial workingDir
- that we use as the starting workingDir. For other file systems
- like HDFS there is no built in notion of an initial workingDir.
- @return if there is built in notion of workingDir then it
- is returned; else a null is returned.]]>
- </doc>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Call {@link #mkdirs(Path, FsPermission)} with default permission.
- @param f path
- @return true if the directory was created
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Make the given file and all non-existent parents into
- directories. Has roughly the semantics of Unix @{code mkdir -p}.
- Existence of the directory hierarchy is not an error.
- @param f path to create
- @param permission to apply to f
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is on the local disk. Add it to filesystem at
- the given dst name and the source is kept intact afterwards
- @param src path
- @param dst path
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="moveFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcs" type="org.apache.hadoop.fs.Path[]"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src files is on the local disk. Add it to filesystem at
- the given dst name, removing the source afterwards.
- @param srcs source paths
- @param dst path
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="moveFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is on the local disk. Add it to the filesystem at
- the given dst name, removing the source afterwards.
- @param src local path
- @param dst path
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is on the local disk. Add it to the filesystem at
- the given dst name.
- delSrc indicates if the source should be removed
- @param delSrc whether to delete the src
- @param src path
- @param dst path]]>
- </doc>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="overwrite" type="boolean"/>
- <param name="srcs" type="org.apache.hadoop.fs.Path[]"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src files are on the local disk. Add it to the filesystem at
- the given dst name.
- delSrc indicates if the source should be removed
- @param delSrc whether to delete the src
- @param overwrite whether to overwrite an existing file
- @param srcs array of paths which are source
- @param dst path
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="overwrite" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is on the local disk. Add it to the filesystem at
- the given dst name.
- delSrc indicates if the source should be removed
- @param delSrc whether to delete the src
- @param overwrite whether to overwrite an existing file
- @param src path
- @param dst path
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="copyToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy it a file from the remote filesystem to the local one.
- @param src path src file in the remote filesystem
- @param dst path local destination
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="moveToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy a file to the local filesystem, then delete it from the
- remote filesystem (if successfully copied).
- @param src path src file in the remote filesystem
- @param dst path local destination
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="copyToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy it a file from a remote filesystem to the local one.
- delSrc indicates if the src will be removed or not.
- @param delSrc whether to delete the src
- @param src path src file in the remote filesystem
- @param dst path local destination
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="copyToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="useRawLocalFileSystem" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is under this filesystem, and the dst is on the local disk.
- Copy it from the remote filesystem to the local dst name.
- delSrc indicates if the src will be removed
- or not. useRawLocalFileSystem indicates whether to use RawLocalFileSystem
- as the local file system or not. RawLocalFileSystem is non checksumming,
- So, It will not create any crc files at local.
- @param delSrc
- whether to delete the src
- @param src
- path
- @param dst
- path
- @param useRawLocalFileSystem
- whether to use RawLocalFileSystem as local file system or not.
- @throws IOException for any IO error]]>
- </doc>
- </method>
- <method name="startLocalOutput" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsOutputFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a local file that the user can write output to. The caller
- provides both the eventual target name in this FileSystem
- and the local working file path.
- If this FileSystem is local, we write directly into the target. If
- the FileSystem is not local, we write into the tmp local area.
- @param fsOutputFile path of output file
- @param tmpLocalFile path of local tmp file
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="completeLocalOutput"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsOutputFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Called when we're all done writing to the target.
- A local FS will do nothing, because we've written to exactly the
- right place.
- A remote FS will copy the contents of tmpLocalFile to the correct target at
- fsOutputFile.
- @param fsOutputFile path of output file
- @param tmpLocalFile path to local tmp file
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Close this FileSystem instance.
- Will release any held locks, delete all files queued for deletion
- through calls to {@link #deleteOnExit(Path)}, and remove this FS instance
- from the cache, if cached.
- After this operation, the outcome of any method call on this FileSystem
- instance, or any input/output stream created by it is <i>undefined</i>.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getUsed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the total size of all files in the filesystem.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getUsed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the total size of all files from a specified path.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link #getFileStatus(Path)} instead">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the block size for a particular file.
- @param f the filename
- @return the number of bytes in a block
- @deprecated Use {@link #getFileStatus(Path)} instead
- @throws FileNotFoundException if the path is not present
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getDefaultBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="use {@link #getDefaultBlockSize(Path)} instead">
- <doc>
- <![CDATA[Return the number of bytes that large input files should be optimally
- be split into to minimize I/O time.
- @deprecated use {@link #getDefaultBlockSize(Path)} instead]]>
- </doc>
- </method>
- <method name="getDefaultBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Return the number of bytes that large input files should be optimally
- be split into to minimize I/O time. The given path will be used to
- locate the actual filesystem. The full path does not have to exist.
- @param f path of file
- @return the default block size for the path's filesystem]]>
- </doc>
- </method>
- <method name="getDefaultReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="use {@link #getDefaultReplication(Path)} instead">
- <doc>
- <![CDATA[Get the default replication.
- @return the replication; the default value is "1".
- @deprecated use {@link #getDefaultReplication(Path)} instead]]>
- </doc>
- </method>
- <method name="getDefaultReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Get the default replication for a path.
- The given path will be used to locate the actual FileSystem to query.
- The full path does not have to exist.
- @param path of the file
- @return default replication for the path's filesystem]]>
- </doc>
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a file status object that represents the path.
- @param f The path we want information from
- @return a FileStatus object
- @throws FileNotFoundException when the path does not exist
- @throws IOException see specific implementation]]>
- </doc>
- </method>
- <method name="msync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- <doc>
- <![CDATA[Synchronize client metadata state.
- <p/>In some FileSystem implementations such as HDFS metadata
- synchronization is essential to guarantee consistency of read requests
- particularly in HA setting.
- @throws IOException
- @throws UnsupportedOperationException]]>
- </doc>
- </method>
- <method name="fixRelativePart" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[See {@link FileContext#fixRelativePart}.]]>
- </doc>
- </method>
- <method name="createSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.fs.Path"/>
- <param name="link" type="org.apache.hadoop.fs.Path"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[See {@link FileContext#createSymlink(Path, Path, boolean)}.]]>
- </doc>
- </method>
- <method name="getFileLinkStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[See {@link FileContext#getFileLinkStatus(Path)}.
- @throws FileNotFoundException when the path does not exist
- @throws IOException see specific implementation]]>
- </doc>
- </method>
- <method name="supportsSymlinks" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[See {@link AbstractFileSystem#supportsSymlinks()}.]]>
- </doc>
- </method>
- <method name="getLinkTarget" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[See {@link FileContext#getLinkTarget(Path)}.
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="resolveLink" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[See {@link AbstractFileSystem#getLinkTarget(Path)}.
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the checksum of a file, if the FS supports checksums.
- @param f The file path
- @return The file checksum. The default return value is null,
- which indicates that no checksum algorithm is implemented
- in the corresponding FileSystem.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="length" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the checksum of a file, from the beginning of the file till the
- specific length.
- @param f The file path
- @param length The length of the file range for checksum calculation
- @return The file checksum or null if checksums are not supported.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="setVerifyChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="verifyChecksum" type="boolean"/>
- <doc>
- <![CDATA[Set the verify checksum flag. This is only applicable if the
- corresponding filesystem supports checksums. By default doesn't do anything.
- @param verifyChecksum Verify checksum flag]]>
- </doc>
- </method>
- <method name="setWriteChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="writeChecksum" type="boolean"/>
- <doc>
- <![CDATA[Set the write checksum flag. This is only applicable if the
- corresponding filesystem supports checksums. By default doesn't do anything.
- @param writeChecksum Write checksum flag]]>
- </doc>
- </method>
- <method name="getStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a status object describing the use and capacity of the
- filesystem. If the filesystem has multiple partitions, the
- use and capacity of the root partition is reflected.
- @return a FsStatus object
- @throws IOException
- see specific implementation]]>
- </doc>
- </method>
- <method name="getStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a status object describing the use and capacity of the
- filesystem. If the filesystem has multiple partitions, the
- use and capacity of the partition pointed to by the specified
- path is reflected.
- @param p Path for which status should be obtained. null means
- the default partition.
- @return a FsStatus object
- @throws IOException
- see specific implementation]]>
- </doc>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set permission of a path.
- @param p The path
- @param permission permission
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set owner of a path (i.e. a file or a directory).
- The parameters username and groupname cannot both be null.
- @param p The path
- @param username If it is null, the original username remains unchanged.
- @param groupname If it is null, the original groupname remains unchanged.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="setTimes"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="mtime" type="long"/>
- <param name="atime" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set access time of a file.
- @param p The path
- @param mtime Set the modification time of this file.
- The number of milliseconds since Jan 1, 1970.
- A value of -1 means that this call should not set modification time.
- @param atime Set the access time of this file.
- The number of milliseconds since Jan 1, 1970.
- A value of -1 means that this call should not set access time.
- @throws IOException IO failure]]>
- </doc>
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a snapshot with a default name.
- @param path The directory where snapshots will be taken.
- @return the snapshot path.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported]]>
- </doc>
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a snapshot.
- @param path The directory where snapshots will be taken.
- @param snapshotName The name of the snapshot
- @return the snapshot path.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported]]>
- </doc>
- </method>
- <method name="renameSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotOldName" type="java.lang.String"/>
- <param name="snapshotNewName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Rename a snapshot.
- @param path The directory path where the snapshot was taken
- @param snapshotOldName Old name of the snapshot
- @param snapshotNewName New name of the snapshot
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="deleteSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete a snapshot of a directory.
- @param path The directory that the to-be-deleted snapshot belongs to
- @param snapshotName The name of the snapshot
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="modifyAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Modifies ACL entries of files and directories. This method can add new ACL
- entries or modify the permissions on existing ACL entries. All existing
- ACL entries that are not specified in this call are retained without
- changes. (Modifications are merged into the current ACL.)
- @param path Path to modify
- @param aclSpec List<AclEntry> describing modifications
- @throws IOException if an ACL could not be modified
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="removeAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes ACL entries from files and directories. Other ACL entries are
- retained.
- @param path Path to modify
- @param aclSpec List describing entries to remove
- @throws IOException if an ACL could not be modified
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="removeDefaultAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes all default ACL entries from files and directories.
- @param path Path to modify
- @throws IOException if an ACL could not be modified
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="removeAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Removes all but the base ACL entries of files and directories. The entries
- for user, group, and others are retained for compatibility with permission
- bits.
- @param path Path to modify
- @throws IOException if an ACL could not be removed
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="setAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Fully replaces ACL of files and directories, discarding all existing
- entries.
- @param path Path to modify
- @param aclSpec List describing modifications, which must include entries
- for user, group, and others for compatibility with permission bits.
- @throws IOException if an ACL could not be modified
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getAclStatus" return="org.apache.hadoop.fs.permission.AclStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Gets the ACL of a file or directory.
- @param path Path to get
- @return AclStatus describing the ACL of the file or directory
- @throws IOException if an ACL could not be read
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to modify
- @param name xattr name.
- @param value xattr value.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to modify
- @param name xattr name.
- @param value xattr value.
- @param flag xattr set flag
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getXAttr" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get an xattr name and value for a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attribute
- @param name xattr name.
- @return byte[] xattr value.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattr name/value pairs for a file or directory.
- Only those xattrs which the logged-in user has permissions to view
- are returned.
- <p>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @return Map describing the XAttrs of the file or directory
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="names" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattrs name/value pairs for a file or directory.
- Only those xattrs which the logged-in user has permissions to view
- are returned.
- <p>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @param names XAttr names.
- @return Map describing the XAttrs of the file or directory
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="listXAttrs" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all of the xattr names for a file or directory.
- Only those xattr names which the logged-in user has permissions to view
- are returned.
- <p>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to get extended attributes
- @return List<String> of the XAttr names of the file or directory
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="removeXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Remove an xattr of a file or directory.
- The name must be prefixed with the namespace followed by ".". For example,
- "user.attr".
- <p>
- Refer to the HDFS extended attributes user documentation for details.
- @param path Path to remove extended attribute
- @param name xattr name
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="setStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="policyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the storage policy for a given file or directory.
- @param src file or directory path.
- @param policyName the name of the target storage policy. The list
- of supported Storage policies can be retrieved
- via {@link #getAllStoragePolicies}.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="unsetStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Unset the storage policy set for a given file or directory.
- @param src file or directory path.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getStoragePolicy" return="org.apache.hadoop.fs.BlockStoragePolicySpi"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Query the effective storage policy ID for the given file or directory.
- @param src file or directory path.
- @return storage policy for give file.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getAllStoragePolicies" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Retrieve all the storage policies supported by this file system.
- @return all storage policies supported by this filesystem.
- @throws IOException IO failure
- @throws UnsupportedOperationException if the operation is unsupported
- (default outcome).]]>
- </doc>
- </method>
- <method name="getTrashRoot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Get the root directory of Trash for current user when the path specified
- is deleted.
- @param path the trash root of the path to be determined.
- @return the default implementation returns {@code /user/$USER/.Trash}]]>
- </doc>
- </method>
- <method name="getTrashRoots" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="allUsers" type="boolean"/>
- <doc>
- <![CDATA[Get all the trash roots for current user or all users.
- @param allUsers return trash roots for all users if true.
- @return all the trash root directories.
- Default FileSystem returns .Trash under users' home directories if
- {@code /user/$USER/.Trash} exists.]]>
- </doc>
- </method>
- <method name="getFileSystemClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="scheme" type="java.lang.String"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the FileSystem implementation class of a filesystem.
- This triggers a scan and load of all FileSystem implementations listed as
- services and discovered via the {@link ServiceLoader}
- @param scheme URL scheme of FS
- @param conf configuration: can be null, in which case the check for
- a filesystem binding declaration in the configuration is skipped.
- @return the filesystem
- @throws UnsupportedFileSystemException if there was no known implementation
- for the scheme.
- @throws IOException if the filesystem could not be loaded]]>
- </doc>
- </method>
- <method name="getStatistics" return="java.util.Map"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="use {@link #getGlobalStorageStatistics()}">
- <doc>
- <![CDATA[Get the Map of Statistics object indexed by URI Scheme.
- @return a Map having a key as URI scheme and value as Statistics object
- @deprecated use {@link #getGlobalStorageStatistics()}]]>
- </doc>
- </method>
- <method name="getAllStatistics" return="java.util.List"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="use {@link #getGlobalStorageStatistics()}">
- <doc>
- <![CDATA[Return the FileSystem classes that have Statistics.
- @deprecated use {@link #getGlobalStorageStatistics()}]]>
- </doc>
- </method>
- <method name="getStatistics" return="org.apache.hadoop.fs.FileSystem.Statistics"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="use {@link #getGlobalStorageStatistics()}">
- <param name="scheme" type="java.lang.String"/>
- <param name="cls" type="java.lang.Class"/>
- <doc>
- <![CDATA[Get the statistics for a particular file system.
- @param cls the class to lookup
- @return a statistics object
- @deprecated use {@link #getGlobalStorageStatistics()}]]>
- </doc>
- </method>
- <method name="clearStatistics"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reset all statistics for all file systems.]]>
- </doc>
- </method>
- <method name="printStatistics"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Print all statistics for all file systems to {@code System.out}]]>
- </doc>
- </method>
- <method name="areSymlinksEnabled" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="enableSymlinks"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getStorageStatistics" return="org.apache.hadoop.fs.StorageStatistics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the StorageStatistics for this FileSystem object. These statistics are
- per-instance. They are not shared with any other FileSystem object.
- <p>This is a default method which is intended to be overridden by
- subclasses. The default implementation returns an empty storage statistics
- object.</p>
- @return The StorageStatistics for this FileSystem instance.
- Will never be null.]]>
- </doc>
- </method>
- <method name="getGlobalStorageStatistics" return="org.apache.hadoop.fs.GlobalStorageStatistics"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the global storage statistics.]]>
- </doc>
- </method>
- <method name="createFile" return="org.apache.hadoop.fs.FSDataOutputStreamBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Create a new FSDataOutputStreamBuilder for the file with path.
- Files are overwritten by default.
- @param path file path
- @return a FSDataOutputStreamBuilder object to build the file
- HADOOP-14384. Temporarily reduce the visibility of method before the
- builder interface becomes stable.]]>
- </doc>
- </method>
- <method name="appendFile" return="org.apache.hadoop.fs.FSDataOutputStreamBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Create a Builder to append a file.
- @param path file path.
- @return a {@link FSDataOutputStreamBuilder} to build file append request.]]>
- </doc>
- </method>
- <field name="FS_DEFAULT_NAME_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_FS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="LOG" type="org.apache.commons.logging.Log"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This log is widely used in the org.apache.hadoop.fs code and tests,
- so must be considered something to only be changed with care.]]>
- </doc>
- </field>
- <field name="SHUTDOWN_HOOK_PRIORITY" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Priority of the FileSystem shutdown hook: {@value}.]]>
- </doc>
- </field>
- <field name="TRASH_PREFIX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Prefix for trash directory: {@value}.]]>
- </doc>
- </field>
- <field name="USER_HOME_PREFIX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="statistics" type="org.apache.hadoop.fs.FileSystem.Statistics"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The statistics for this file system.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[An abstract base class for a fairly generic filesystem. It
- may be implemented as a distributed filesystem, or as a "local"
- one that reflects the locally-connected disk. The local version
- exists for small Hadoop instances and for testing.
- <p>
- All user code that may potentially use the Hadoop Distributed
- File System should be written to use a FileSystem object or its
- successor, {@link FileContext}.
- <p>
- The local implementation is {@link LocalFileSystem} and distributed
- implementation is DistributedFileSystem. There are other implementations
- for object stores and (outside the Apache Hadoop codebase),
- third party filesystems.
- <p>
- Notes
- <ol>
- <li>The behaviour of the filesystem is
- <a href="https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/filesystem/filesystem.html">
- specified in the Hadoop documentation. </a>
- However, the normative specification of the behavior of this class is
- actually HDFS: if HDFS does not behave the way these Javadocs or
- the specification in the Hadoop documentations define, assume that
- the documentation is incorrect.
- </li>
- <li>The term {@code FileSystem} refers to an instance of this class.</li>
- <li>The acronym "FS" is used as an abbreviation of FileSystem.</li>
- <li>The term {@code filesystem} refers to the distributed/local filesystem
- itself, rather than the class used to interact with it.</li>
- <li>The term "file" refers to a file in the remote filesystem,
- rather than instances of {@code java.io.File}.</li>
- </ol>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FileSystem -->
- <!-- start class org.apache.hadoop.fs.FileUtil -->
- <class name="FileUtil" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="FileUtil"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="stat2Paths" return="org.apache.hadoop.fs.Path[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stats" type="org.apache.hadoop.fs.FileStatus[]"/>
- <doc>
- <![CDATA[convert an array of FileStatus to an array of Path
-
- @param stats
- an array of FileStatus objects
- @return an array of paths corresponding to the input]]>
- </doc>
- </method>
- <method name="stat2Paths" return="org.apache.hadoop.fs.Path[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stats" type="org.apache.hadoop.fs.FileStatus[]"/>
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[convert an array of FileStatus to an array of Path.
- If stats if null, return path
- @param stats
- an array of FileStatus objects
- @param path
- default path to return in stats is null
- @return an array of paths corresponding to the input]]>
- </doc>
- </method>
- <method name="fullyDeleteOnExit"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="java.io.File"/>
- <doc>
- <![CDATA[Register all files recursively to be deleted on exit.
- @param file File/directory to be deleted]]>
- </doc>
- </method>
- <method name="fullyDelete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <doc>
- <![CDATA[Delete a directory and all its contents. If
- we return false, the directory may be partially-deleted.
- (1) If dir is symlink to a file, the symlink is deleted. The file pointed
- to by the symlink is not deleted.
- (2) If dir is symlink to a directory, symlink is deleted. The directory
- pointed to by symlink is not deleted.
- (3) If dir is a normal file, it is deleted.
- (4) If dir is a normal directory, then dir and all its contents recursively
- are deleted.]]>
- </doc>
- </method>
- <method name="fullyDelete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <param name="tryGrantPermissions" type="boolean"/>
- <doc>
- <![CDATA[Delete a directory and all its contents. If
- we return false, the directory may be partially-deleted.
- (1) If dir is symlink to a file, the symlink is deleted. The file pointed
- to by the symlink is not deleted.
- (2) If dir is symlink to a directory, symlink is deleted. The directory
- pointed to by symlink is not deleted.
- (3) If dir is a normal file, it is deleted.
- (4) If dir is a normal directory, then dir and all its contents recursively
- are deleted.
- @param dir the file or directory to be deleted
- @param tryGrantPermissions true if permissions should be modified to delete a file.
- @return true on success false on failure.]]>
- </doc>
- </method>
- <method name="readLink" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <doc>
- <![CDATA[Returns the target of the given symlink. Returns the empty string if
- the given path does not refer to a symlink or there is an error
- accessing the symlink.
- @param f File representing the symbolic link.
- @return The target of the symbolic link, empty string on error or if not
- a symlink.]]>
- </doc>
- </method>
- <method name="fullyDeleteContents" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <doc>
- <![CDATA[Delete the contents of a directory, not the directory itself. If
- we return false, the directory may be partially-deleted.
- If dir is a symlink to a directory, all the contents of the actual
- directory pointed to by dir will be deleted.]]>
- </doc>
- </method>
- <method name="fullyDeleteContents" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <param name="tryGrantPermissions" type="boolean"/>
- <doc>
- <![CDATA[Delete the contents of a directory, not the directory itself. If
- we return false, the directory may be partially-deleted.
- If dir is a symlink to a directory, all the contents of the actual
- directory pointed to by dir will be deleted.
- @param tryGrantPermissions if 'true', try grant +rwx permissions to this
- and all the underlying directories before trying to delete their contents.]]>
- </doc>
- </method>
- <method name="fullyDelete"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link FileSystem#delete(Path, boolean)}">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Recursively delete a directory.
-
- @param fs {@link FileSystem} on which the path is present
- @param dir directory to recursively delete
- @throws IOException
- @deprecated Use {@link FileSystem#delete(Path, boolean)}]]>
- </doc>
- </method>
- <method name="copy" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dstFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="deleteSource" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy files between FileSystems.]]>
- </doc>
- </method>
- <method name="copy" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="srcs" type="org.apache.hadoop.fs.Path[]"/>
- <param name="dstFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="deleteSource" type="boolean"/>
- <param name="overwrite" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="copy" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dstFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="deleteSource" type="boolean"/>
- <param name="overwrite" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy files between FileSystems.]]>
- </doc>
- </method>
- <method name="copy" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="srcStatus" type="org.apache.hadoop.fs.FileStatus"/>
- <param name="dstFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="deleteSource" type="boolean"/>
- <param name="overwrite" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy files between FileSystems.]]>
- </doc>
- </method>
- <method name="copyMerge" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="srcDir" type="org.apache.hadoop.fs.Path"/>
- <param name="dstFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dstFile" type="org.apache.hadoop.fs.Path"/>
- <param name="deleteSource" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="addString" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="copy" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="java.io.File"/>
- <param name="dstFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="deleteSource" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy local files to a FileSystem.]]>
- </doc>
- </method>
- <method name="copy" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcFS" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="java.io.File"/>
- <param name="deleteSource" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copy FileSystem files to local files.]]>
- </doc>
- </method>
- <method name="makeShellPath" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filename" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convert a os-native filename to a path that works for the shell.
- @param filename The filename to convert
- @return The unix pathname
- @throws IOException on windows, there can be problems with the subprocess]]>
- </doc>
- </method>
- <method name="makeShellPath" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convert a os-native filename to a path that works for the shell.
- @param file The filename to convert
- @return The unix pathname
- @throws IOException on windows, there can be problems with the subprocess]]>
- </doc>
- </method>
- <method name="makeShellPath" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="java.io.File"/>
- <param name="makeCanonicalPath" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convert a os-native filename to a path that works for the shell.
- @param file The filename to convert
- @param makeCanonicalPath
- Whether to make canonical path for the file passed
- @return The unix pathname
- @throws IOException on windows, there can be problems with the subprocess]]>
- </doc>
- </method>
- <method name="getDU" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <doc>
- <![CDATA[Takes an input dir and returns the du on that local directory. Very basic
- implementation.
-
- @param dir
- The input dir to get the disk space of this local dir
- @return The total disk space of the input local directory]]>
- </doc>
- </method>
- <method name="unZip"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="inFile" type="java.io.File"/>
- <param name="unzipDir" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Given a File input it will unzip the file in a the unzip directory
- passed as the second parameter
- @param inFile The zip file as input
- @param unzipDir The unzip directory where to unzip the zip file.
- @throws IOException]]>
- </doc>
- </method>
- <method name="unTar"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="inFile" type="java.io.File"/>
- <param name="untarDir" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Given a Tar File as input it will untar the file in a the untar directory
- passed as the second parameter
-
- This utility will untar ".tar" files and ".tar.gz","tgz" files.
-
- @param inFile The tar file as input.
- @param untarDir The untar directory where to untar the tar file.
- @throws IOException]]>
- </doc>
- </method>
- <method name="symLink" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="java.lang.String"/>
- <param name="linkname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a soft link between a src and destination
- only on a local disk. HDFS does not support this.
- On Windows, when symlink creation fails due to security
- setting, we will log a warning. The return code in this
- case is 2.
- @param target the target for symlink
- @param linkname the symlink
- @return 0 on success]]>
- </doc>
- </method>
- <method name="chmod" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filename" type="java.lang.String"/>
- <param name="perm" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Change the permissions on a filename.
- @param filename the name of the file to change
- @param perm the permission string
- @return the exit code from the command
- @throws IOException
- @throws InterruptedException]]>
- </doc>
- </method>
- <method name="chmod" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filename" type="java.lang.String"/>
- <param name="perm" type="java.lang.String"/>
- <param name="recursive" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Change the permissions on a file / directory, recursively, if
- needed.
- @param filename name of the file whose permissions are to change
- @param perm permission string
- @param recursive true, if permissions should be changed recursively
- @return the exit code from the command.
- @throws IOException]]>
- </doc>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="java.io.File"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set the ownership on a file / directory. User name and group name
- cannot both be null.
- @param file the file to change
- @param username the new user owner name
- @param groupname the new group owner name
- @throws IOException]]>
- </doc>
- </method>
- <method name="setReadable" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <param name="readable" type="boolean"/>
- <doc>
- <![CDATA[Platform independent implementation for {@link File#setReadable(boolean)}
- File#setReadable does not work as expected on Windows.
- @param f input file
- @param readable
- @return true on success, false otherwise]]>
- </doc>
- </method>
- <method name="setWritable" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <param name="writable" type="boolean"/>
- <doc>
- <![CDATA[Platform independent implementation for {@link File#setWritable(boolean)}
- File#setWritable does not work as expected on Windows.
- @param f input file
- @param writable
- @return true on success, false otherwise]]>
- </doc>
- </method>
- <method name="setExecutable" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <param name="executable" type="boolean"/>
- <doc>
- <![CDATA[Platform independent implementation for {@link File#setExecutable(boolean)}
- File#setExecutable does not work as expected on Windows.
- Note: revoking execute permission on folders does not have the same
- behavior on Windows as on Unix platforms. Creating, deleting or renaming
- a file within that folder will still succeed on Windows.
- @param f input file
- @param executable
- @return true on success, false otherwise]]>
- </doc>
- </method>
- <method name="canRead" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <doc>
- <![CDATA[Platform independent implementation for {@link File#canRead()}
- @param f input file
- @return On Unix, same as {@link File#canRead()}
- On Windows, true if process has read access on the path]]>
- </doc>
- </method>
- <method name="canWrite" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <doc>
- <![CDATA[Platform independent implementation for {@link File#canWrite()}
- @param f input file
- @return On Unix, same as {@link File#canWrite()}
- On Windows, true if process has write access on the path]]>
- </doc>
- </method>
- <method name="canExecute" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <doc>
- <![CDATA[Platform independent implementation for {@link File#canExecute()}
- @param f input file
- @return On Unix, same as {@link File#canExecute()}
- On Windows, true if process has execute access on the path]]>
- </doc>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="java.io.File"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set permissions to the required value. Uses the java primitives instead
- of forking if group == other.
- @param f the file to change
- @param permission the new permissions
- @throws IOException]]>
- </doc>
- </method>
- <method name="createLocalTempFile" return="java.io.File"
- abstract="false" native="false" synchronized="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="basefile" type="java.io.File"/>
- <param name="prefix" type="java.lang.String"/>
- <param name="isDeleteOnExit" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a tmp file for a base file.
- @param basefile the base file of the tmp
- @param prefix file name prefix of tmp
- @param isDeleteOnExit if true, the tmp will be deleted when the VM exits
- @return a newly created tmp file
- @exception IOException If a tmp file cannot created
- @see java.io.File#createTempFile(String, String, File)
- @see java.io.File#deleteOnExit()]]>
- </doc>
- </method>
- <method name="replaceFile"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="java.io.File"/>
- <param name="target" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Move the src file to the name specified by target.
- @param src the source file
- @param target the target file
- @exception IOException If this operation fails]]>
- </doc>
- </method>
- <method name="listFiles" return="java.io.File[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[A wrapper for {@link File#listFiles()}. This java.io API returns null
- when a dir is not a directory or for any I/O error. Instead of having
- null check everywhere File#listFiles() is used, we will add utility API
- to get around this problem. For the majority of cases where we prefer
- an IOException to be thrown.
- @param dir directory for which listing should be performed
- @return list of files or empty list
- @exception IOException for invalid directory or for a bad disk.]]>
- </doc>
- </method>
- <method name="list" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[A wrapper for {@link File#list()}. This java.io API returns null
- when a dir is not a directory or for any I/O error. Instead of having
- null check everywhere File#list() is used, we will add utility API
- to get around this problem. For the majority of cases where we prefer
- an IOException to be thrown.
- @param dir directory for which listing should be performed
- @return list of file names or empty string list
- @exception IOException for invalid directory or for a bad disk.]]>
- </doc>
- </method>
- <method name="createJarWithClassPath" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="inputClassPath" type="java.lang.String"/>
- <param name="pwd" type="org.apache.hadoop.fs.Path"/>
- <param name="callerEnv" type="java.util.Map"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createJarWithClassPath" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="inputClassPath" type="java.lang.String"/>
- <param name="pwd" type="org.apache.hadoop.fs.Path"/>
- <param name="targetDir" type="org.apache.hadoop.fs.Path"/>
- <param name="callerEnv" type="java.util.Map"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a jar file at the given path, containing a manifest with a classpath
- that references all specified entries.
-
- Some platforms may have an upper limit on command line length. For example,
- the maximum command line length on Windows is 8191 characters, but the
- length of the classpath may exceed this. To work around this limitation,
- use this method to create a small intermediate jar with a manifest that
- contains the full classpath. It returns the absolute path to the new jar,
- which the caller may set as the classpath for a new process.
-
- Environment variable evaluation is not supported within a jar manifest, so
- this method expands environment variables before inserting classpath entries
- to the manifest. The method parses environment variables according to
- platform-specific syntax (%VAR% on Windows, or $VAR otherwise). On Windows,
- environment variables are case-insensitive. For example, %VAR% and %var%
- evaluate to the same value.
-
- Specifying the classpath in a jar manifest does not support wildcards, so
- this method expands wildcards internally. Any classpath entry that ends
- with * is translated to all files at that path with extension .jar or .JAR.
-
- @param inputClassPath String input classpath to bundle into the jar manifest
- @param pwd Path to working directory to save jar
- @param targetDir path to where the jar execution will have its working dir
- @param callerEnv Map<String, String> caller's environment variables to use
- for expansion
- @return String[] with absolute path to new jar in position 0 and
- unexpanded wild card entry path in position 1
- @throws IOException if there is an I/O error while writing the jar file]]>
- </doc>
- </method>
- <method name="getJarsInDirectory" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns all jars that are in the directory. It is useful in expanding a
- wildcard path to return all jars from the directory to use in a classpath.
- It operates only on local paths.
- @param path the path to the directory. The path may include the wildcard.
- @return the list of jars as URLs, or an empty list if there are no jars, or
- the directory does not exist locally]]>
- </doc>
- </method>
- <method name="getJarsInDirectory" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="java.lang.String"/>
- <param name="useLocal" type="boolean"/>
- <doc>
- <![CDATA[Returns all jars that are in the directory. It is useful in expanding a
- wildcard path to return all jars from the directory to use in a classpath.
- @param path the path to the directory. The path may include the wildcard.
- @return the list of jars as URLs, or an empty list if there are no jars, or
- the directory does not exist]]>
- </doc>
- </method>
- <method name="compareFs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="srcFs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="destFs" type="org.apache.hadoop.fs.FileSystem"/>
- </method>
- <field name="SYMLINK_NO_PRIVILEGE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A collection of file-processing util methods]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FileUtil -->
- <!-- start class org.apache.hadoop.fs.FilterFileSystem -->
- <class name="FilterFileSystem" extends="org.apache.hadoop.fs.FileSystem"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="FilterFileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FilterFileSystem" type="org.apache.hadoop.fs.FileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getRawFileSystem" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the raw file system
- @return FileSystem being filtered]]>
- </doc>
- </method>
- <method name="initialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Called after a new FileSystem instance is constructed.
- @param name a uri whose authority section names the host, port, etc.
- for this FileSystem
- @param conf the configuration]]>
- </doc>
- </method>
- <method name="getUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a URI whose scheme and authority identify this FileSystem.]]>
- </doc>
- </method>
- <method name="getCanonicalUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="canonicalizeUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- </method>
- <method name="makeQualified" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Make sure that a path specifies a FileSystem.]]>
- </doc>
- </method>
- <method name="checkPath"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Check that a Path belongs to this FileSystem.]]>
- </doc>
- </method>
- <method name="getFileBlockLocations" return="org.apache.hadoop.fs.BlockLocation[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.FileStatus"/>
- <param name="start" type="long"/>
- <param name="len" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="resolvePath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Opens an FSDataInputStream at the indicated Path.
- @param f the file name to open
- @param bufferSize the size of the buffer to be used.]]>
- </doc>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="concat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="psrcs" type="org.apache.hadoop.fs.Path[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flags" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="checksumOpt" type="org.apache.hadoop.fs.Options.ChecksumOpt"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="filter" type="org.apache.hadoop.fs.PathFilter"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flags" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setReplication" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Set replication for an existing file.
-
- @param src file name
- @param replication new replication
- @throws IOException
- @return true if successful;
- false if file does not exist or is a directory]]>
- </doc>
- </method>
- <method name="rename" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Renames Path src to Path dst. Can take place on local fs
- or remote DFS.]]>
- </doc>
- </method>
- <method name="rename"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="options" type="org.apache.hadoop.fs.Options.Rename[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete a file]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List files in a directory.]]>
- </doc>
- </method>
- <method name="listCorruptFileBlocks" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List files and its block locations in a directory.]]>
- </doc>
- </method>
- <method name="listStatusIterator" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a remote iterator for listing in a directory]]>
- </doc>
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setWorkingDirectory"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newDir" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Set the current working directory for the given file system. All relative
- paths will be resolved relative to it.
-
- @param newDir]]>
- </doc>
- </method>
- <method name="getWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the current working directory for the given file system
-
- @return the directory pathname]]>
- </doc>
- </method>
- <method name="getInitialWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="getStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is on the local disk. Add it to FS at
- the given dst name.
- delSrc indicates if the source should be removed]]>
- </doc>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="overwrite" type="boolean"/>
- <param name="srcs" type="org.apache.hadoop.fs.Path[]"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src files are on the local disk. Add it to FS at
- the given dst name.
- delSrc indicates if the source should be removed]]>
- </doc>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="overwrite" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is on the local disk. Add it to FS at
- the given dst name.
- delSrc indicates if the source should be removed]]>
- </doc>
- </method>
- <method name="copyToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The src file is under FS, and the dst is on the local disk.
- Copy it from FS control to the local dst name.
- delSrc indicates if the src will be removed or not.]]>
- </doc>
- </method>
- <method name="startLocalOutput" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsOutputFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a local File that the user can write output to. The caller
- provides both the eventual FS target name and the local working
- file. If the FS is local, we write directly into the target. If
- the FS is remote, we write into the tmp local area.]]>
- </doc>
- </method>
- <method name="completeLocalOutput"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsOutputFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Called when we're all done writing to the target. A local FS will
- do nothing, because we've written to exactly the right place. A remote
- FS will copy the contents of tmpLocalFile to the correct target at
- fsOutputFile.]]>
- </doc>
- </method>
- <method name="getUsed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the total size of all files in the filesystem.]]>
- </doc>
- </method>
- <method name="getUsed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the total size of all files from a specified path.]]>
- </doc>
- </method>
- <method name="getDefaultBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDefaultReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getDefaultBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="getDefaultReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get file status.]]>
- </doc>
- </method>
- <method name="msync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- </method>
- <method name="access"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="mode" type="org.apache.hadoop.fs.permission.FsAction"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.fs.Path"/>
- <param name="link" type="org.apache.hadoop.fs.Path"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileLinkStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="supportsSymlinks" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getLinkTarget" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="resolveLink" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="length" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setVerifyChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="verifyChecksum" type="boolean"/>
- </method>
- <method name="setWriteChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="writeChecksum" type="boolean"/>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setTimes"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="mtime" type="long"/>
- <param name="atime" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="primitiveCreate" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="absolutePermission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flag" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="checksumOpt" type="org.apache.hadoop.fs.Options.ChecksumOpt"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="primitiveMkdir" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="abdolutePermission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getChildFileSystems" return="org.apache.hadoop.fs.FileSystem[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="renameSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotOldName" type="java.lang.String"/>
- <param name="snapshotNewName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="deleteSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="modifyAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeDefaultAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getAclStatus" return="org.apache.hadoop.fs.permission.AclStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttr" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="names" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listXAttrs" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="policyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="unsetStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getStoragePolicy" return="org.apache.hadoop.fs.BlockStoragePolicySpi"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getAllStoragePolicies" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getTrashRoot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="getTrashRoots" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="allUsers" type="boolean"/>
- </method>
- <method name="createFile" return="org.apache.hadoop.fs.FSDataOutputStreamBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="appendFile" return="org.apache.hadoop.fs.FSDataOutputStreamBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- </method>
- <field name="fs" type="org.apache.hadoop.fs.FileSystem"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="swapScheme" type="java.lang.String"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A <code>FilterFileSystem</code> contains
- some other file system, which it uses as
- its basic file system, possibly transforming
- the data along the way or providing additional
- functionality. The class <code>FilterFileSystem</code>
- itself simply overrides all methods of
- <code>FileSystem</code> with versions that
- pass all requests to the contained file
- system. Subclasses of <code>FilterFileSystem</code>
- may further override some of these methods
- and may also provide additional methods
- and fields.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FilterFileSystem -->
- <!-- start interface org.apache.hadoop.fs.FsConstants -->
- <interface name="FsConstants" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <field name="LOCAL_FS_URI" type="java.net.URI"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FTP_SCHEME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="MAX_PATH_LINKS" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="VIEWFS_URI" type="java.net.URI"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[ViewFs: viewFs file system (ie the mount file system on client side)]]>
- </doc>
- </field>
- <field name="VIEWFS_SCHEME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[FileSystem related constants.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.FsConstants -->
- <!-- start class org.apache.hadoop.fs.FSDataInputStream -->
- <class name="FSDataInputStream" extends="java.io.DataInputStream"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.fs.Seekable"/>
- <implements name="org.apache.hadoop.fs.PositionedReadable"/>
- <implements name="org.apache.hadoop.fs.ByteBufferReadable"/>
- <implements name="org.apache.hadoop.fs.HasFileDescriptor"/>
- <implements name="org.apache.hadoop.fs.CanSetDropBehind"/>
- <implements name="org.apache.hadoop.fs.CanSetReadahead"/>
- <implements name="org.apache.hadoop.fs.HasEnhancedByteBufferAccess"/>
- <implements name="org.apache.hadoop.fs.CanUnbuffer"/>
- <implements name="org.apache.hadoop.fs.StreamCapabilities"/>
- <implements name="org.apache.hadoop.fs.ByteBufferPositionedReadable"/>
- <constructor name="FSDataInputStream" type="java.io.InputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="seek"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="desired" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Seek to the given offset.
- @param desired offset to seek to]]>
- </doc>
- </method>
- <method name="getPos" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the current position in the input stream.
- @return current position in the input stream]]>
- </doc>
- </method>
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read bytes from the given position in the stream to the given buffer.
- @param position position in the input stream to seek
- @param buffer buffer into which data is read
- @param offset offset into the buffer in which data is written
- @param length maximum number of bytes to read
- @return total number of bytes read into the buffer, or <code>-1</code>
- if there is no more data because the end of the stream has been
- reached]]>
- </doc>
- </method>
- <method name="readFully"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read bytes from the given position in the stream to the given buffer.
- Continues to read until <code>length</code> bytes have been read.
- @param position position in the input stream to seek
- @param buffer buffer into which data is read
- @param offset offset into the buffer in which data is written
- @param length the number of bytes to read
- @throws IOException IO problems
- @throws EOFException If the end of stream is reached while reading.
- If an exception is thrown an undetermined number
- of bytes in the buffer may have been written.]]>
- </doc>
- </method>
- <method name="readFully"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[See {@link #readFully(long, byte[], int, int)}.]]>
- </doc>
- </method>
- <method name="seekToNewSource" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="targetPos" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Seek to the given position on an alternate copy of the data.
- @param targetPos position to seek to
- @return true if a new source is found, false otherwise]]>
- </doc>
- </method>
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buf" type="java.nio.ByteBuffer"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileDescriptor" return="java.io.FileDescriptor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setReadahead"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="readahead" type="java.lang.Long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- </method>
- <method name="setDropBehind"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dropBehind" type="java.lang.Boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- </method>
- <method name="read" return="java.nio.ByteBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bufferPool" type="org.apache.hadoop.io.ByteBufferPool"/>
- <param name="maxLength" type="int"/>
- <param name="opts" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- </method>
- <method name="read" return="java.nio.ByteBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="bufferPool" type="org.apache.hadoop.io.ByteBufferPool"/>
- <param name="maxLength" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- </method>
- <method name="releaseBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buffer" type="java.nio.ByteBuffer"/>
- </method>
- <method name="unbuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="hasCapability" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="capability" type="java.lang.String"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[String value. Includes the string value of the inner stream
- @return the stream]]>
- </doc>
- </method>
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buf" type="java.nio.ByteBuffer"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Utility that wraps a {@link FSInputStream} in a {@link DataInputStream}
- and buffers input through a {@link java.io.BufferedInputStream}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FSDataInputStream -->
- <!-- start class org.apache.hadoop.fs.FSDataOutputStream -->
- <class name="FSDataOutputStream" extends="java.io.DataOutputStream"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.fs.Syncable"/>
- <implements name="org.apache.hadoop.fs.CanSetDropBehind"/>
- <implements name="org.apache.hadoop.fs.StreamCapabilities"/>
- <constructor name="FSDataOutputStream" type="java.io.OutputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <constructor name="FSDataOutputStream" type="java.io.OutputStream, org.apache.hadoop.fs.FileSystem.Statistics"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <constructor name="FSDataOutputStream" type="java.io.OutputStream, org.apache.hadoop.fs.FileSystem.Statistics, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <method name="getPos" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the current position in the output stream.
- @return the current position in the output stream]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Close the underlying output stream.]]>
- </doc>
- </method>
- <method name="hasCapability" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="capability" type="java.lang.String"/>
- </method>
- <method name="sync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="hflush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="hsync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setDropBehind"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dropBehind" type="java.lang.Boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Utility that wraps a {@link OutputStream} in a {@link DataOutputStream}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FSDataOutputStream -->
- <!-- start class org.apache.hadoop.fs.FSDataOutputStreamBuilder -->
- <class name="FSDataOutputStreamBuilder" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="FSDataOutputStreamBuilder" type="org.apache.hadoop.fs.FileSystem, org.apache.hadoop.fs.Path"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor.]]>
- </doc>
- </constructor>
- <method name="getThisBuilder" return="B"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the concrete implementation of the builder instance.]]>
- </doc>
- </method>
- <method name="getFS" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="getPath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="getPermission" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="permission" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="perm" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <doc>
- <![CDATA[Set permission for the file.]]>
- </doc>
- </method>
- <method name="getBufferSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="bufferSize" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bufSize" type="int"/>
- <doc>
- <![CDATA[Set the size of the buffer to be used.]]>
- </doc>
- </method>
- <method name="getReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="replication" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="replica" type="short"/>
- <doc>
- <![CDATA[Set replication factor.]]>
- </doc>
- </method>
- <method name="getBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="blockSize" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="blkSize" type="long"/>
- <doc>
- <![CDATA[Set block size.]]>
- </doc>
- </method>
- <method name="isRecursive" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return true to create the parent directories if they do not exist.]]>
- </doc>
- </method>
- <method name="recursive" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create the parent directory if they do not exist.]]>
- </doc>
- </method>
- <method name="getProgress" return="org.apache.hadoop.util.Progressable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="progress" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="prog" type="org.apache.hadoop.util.Progressable"/>
- <doc>
- <![CDATA[Set the facility of reporting progress.]]>
- </doc>
- </method>
- <method name="getFlags" return="java.util.EnumSet"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="create" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an FSDataOutputStream at the specified path.]]>
- </doc>
- </method>
- <method name="overwrite" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="overwrite" type="boolean"/>
- <doc>
- <![CDATA[Set to true to overwrite the existing file.
- Set it to false, an exception will be thrown when calling {@link #build()}
- if the file exists.]]>
- </doc>
- </method>
- <method name="append" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Append to an existing file (optional operation).]]>
- </doc>
- </method>
- <method name="getChecksumOpt" return="org.apache.hadoop.fs.Options.ChecksumOpt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="checksumOpt" return="B"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="chksumOpt" type="org.apache.hadoop.fs.Options.ChecksumOpt"/>
- <doc>
- <![CDATA[Set checksum opt.]]>
- </doc>
- </method>
- <method name="build" return="S"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create the FSDataOutputStream to write on the file system.
- @throws HadoopIllegalArgumentException if the parameters are not valid.
- @throws IOException on errors when file system creates or appends the file.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Builder for {@link FSDataOutputStream} and its subclasses.
- It is used to create {@link FSDataOutputStream} when creating a new file or
- appending an existing file on {@link FileSystem}.
- By default, it does not create parent directory that do not exist.
- {@link FileSystem#createNonRecursive(Path, boolean, int, short, long,
- Progressable)}.
- To create missing parent directory, use {@link #recursive()}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FSDataOutputStreamBuilder -->
- <!-- start class org.apache.hadoop.fs.FSError -->
- <class name="FSError" extends="java.lang.Error"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Thrown for unexpected filesystem errors, presumed to reflect disk errors
- in the native filesystem.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FSError -->
- <!-- start class org.apache.hadoop.fs.FSInputStream -->
- <class name="FSInputStream" extends="java.io.InputStream"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.fs.Seekable"/>
- <implements name="org.apache.hadoop.fs.PositionedReadable"/>
- <constructor name="FSInputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="seek"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="pos" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Seek to the given offset from the start of the file.
- The next read() will be from that location. Can't
- seek past the end of the file.]]>
- </doc>
- </method>
- <method name="getPos" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the current offset from the start of the file]]>
- </doc>
- </method>
- <method name="seekToNewSource" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="targetPos" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Seeks a different copy of the data. Returns true if
- found a new source, false otherwise.]]>
- </doc>
- </method>
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="validatePositionedReadArgs"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <exception name="EOFException" type="java.io.EOFException"/>
- <doc>
- <![CDATA[Validation code, available for use in subclasses.
- @param position position: if negative an EOF exception is raised
- @param buffer destination buffer
- @param offset offset within the buffer
- @param length length of bytes to read
- @throws EOFException if the position is negative
- @throws IndexOutOfBoundsException if there isn't space for the amount of
- data requested.
- @throws IllegalArgumentException other arguments are invalid.]]>
- </doc>
- </method>
- <method name="readFully"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFully"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[FSInputStream is a generic old InputStream with a little bit
- of RAF-style seek ability.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FSInputStream -->
- <!-- start class org.apache.hadoop.fs.FsServerDefaults -->
- <class name="FsServerDefaults" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="FsServerDefaults"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FsServerDefaults" type="long, int, int, short, int, boolean, long, org.apache.hadoop.util.DataChecksum.Type"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FsServerDefaults" type="long, int, int, short, int, boolean, long, org.apache.hadoop.util.DataChecksum.Type, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FsServerDefaults" type="long, int, int, short, int, boolean, long, org.apache.hadoop.util.DataChecksum.Type, java.lang.String, byte"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getBytesPerChecksum" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getWritePacketSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getFileBufferSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getEncryptDataTransfer" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getTrashInterval" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getChecksumType" return="org.apache.hadoop.util.DataChecksum.Type"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getKeyProviderUri" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDefaultStoragePolicyId" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Provides server default configuration values to clients.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FsServerDefaults -->
- <!-- start class org.apache.hadoop.fs.FsStatus -->
- <class name="FsStatus" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="FsStatus" type="long, long, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a FsStatus object, using the specified statistics]]>
- </doc>
- </constructor>
- <method name="getCapacity" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the capacity in bytes of the file system]]>
- </doc>
- </method>
- <method name="getUsed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the number of bytes used on the file system]]>
- </doc>
- </method>
- <method name="getRemaining" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the number of remaining bytes on the file system]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[This class is used to represent the capacity, free and used space on a
- {@link FileSystem}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.FsStatus -->
- <!-- start class org.apache.hadoop.fs.GlobalStorageStatistics -->
- <class name="GlobalStorageStatistics" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.GlobalStorageStatistics[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.GlobalStorageStatistics"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="get" return="org.apache.hadoop.fs.StorageStatistics"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the StorageStatistics object with the given name.
- @param name The storage statistics object name.
- @return The StorageStatistics object with the given name, or
- null if there is none.]]>
- </doc>
- </method>
- <method name="put" return="org.apache.hadoop.fs.StorageStatistics"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="provider" type="org.apache.hadoop.fs.GlobalStorageStatistics.StorageStatisticsProvider"/>
- <doc>
- <![CDATA[Create or return the StorageStatistics object with the given name.
- @param name The storage statistics object name.
- @param provider An object which can create a new StorageStatistics
- object if needed.
- @return The StorageStatistics object with the given name.
- @throws RuntimeException If the StorageStatisticsProvider provides a null
- object or a new StorageStatistics object with the
- wrong name.]]>
- </doc>
- </method>
- <method name="reset"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reset all global storage statistics.]]>
- </doc>
- </method>
- <method name="iterator" return="java.util.Iterator"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get an iterator that we can use to iterate throw all the global storage
- statistics objects.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Stores global storage statistics objects.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.GlobalStorageStatistics -->
- <!-- start class org.apache.hadoop.fs.GlobFilter -->
- <class name="GlobFilter" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.fs.PathFilter"/>
- <constructor name="GlobFilter" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Creates a glob filter with the specified file pattern.
- @param filePattern the file pattern.
- @throws IOException thrown if the file pattern is incorrect.]]>
- </doc>
- </constructor>
- <constructor name="GlobFilter" type="java.lang.String, org.apache.hadoop.fs.PathFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Creates a glob filter with the specified file pattern and an user filter.
- @param filePattern the file pattern.
- @param filter user filter in addition to the glob pattern.
- @throws IOException thrown if the file pattern is incorrect.]]>
- </doc>
- </constructor>
- <method name="hasPattern" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="accept" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- </method>
- <doc>
- <![CDATA[A filter for POSIX glob pattern with brace expansions.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.GlobFilter -->
- <!-- start class org.apache.hadoop.fs.InvalidPathException -->
- <class name="InvalidPathException" extends="org.apache.hadoop.HadoopIllegalArgumentException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="InvalidPathException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs exception with the specified detail message.
-
- @param path invalid path.]]>
- </doc>
- </constructor>
- <constructor name="InvalidPathException" type="java.lang.String, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs exception with the specified detail message.
-
- @param path invalid path.
- @param reason Reason <code>path</code> is invalid]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[Path string is invalid either because it has invalid characters or due to
- other file system specific reasons.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.InvalidPathException -->
- <!-- start class org.apache.hadoop.fs.LocalFileSystem -->
- <class name="LocalFileSystem" extends="org.apache.hadoop.fs.ChecksumFileSystem"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="LocalFileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="LocalFileSystem" type="org.apache.hadoop.fs.FileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="initialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getScheme" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the protocol scheme for the FileSystem.
- <p/>
- @return <code>file</code>]]>
- </doc>
- </method>
- <method name="getRaw" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="pathToFile" return="java.io.File"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Convert a path to a File.]]>
- </doc>
- </method>
- <method name="copyFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="copyToLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delSrc" type="boolean"/>
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="reportChecksumFailure" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="in" type="org.apache.hadoop.fs.FSDataInputStream"/>
- <param name="inPos" type="long"/>
- <param name="sums" type="org.apache.hadoop.fs.FSDataInputStream"/>
- <param name="sumsPos" type="long"/>
- <doc>
- <![CDATA[Moves files to a bad file directory on the same device, so that their
- storage will not be reused.]]>
- </doc>
- </method>
- <method name="supportsSymlinks" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.fs.Path"/>
- <param name="link" type="org.apache.hadoop.fs.Path"/>
- <param name="createParent" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileLinkStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getLinkTarget" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Implement the FileSystem API for the checksumed local filesystem.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.LocalFileSystem -->
- <!-- start class org.apache.hadoop.fs.LocatedFileStatus -->
- <class name="LocatedFileStatus" extends="org.apache.hadoop.fs.FileStatus"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="LocatedFileStatus"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="LocatedFileStatus" type="org.apache.hadoop.fs.FileStatus, org.apache.hadoop.fs.BlockLocation[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Constructor
- @param stat a file status
- @param locations a file's block locations]]>
- </doc>
- </constructor>
- <constructor name="LocatedFileStatus" type="long, boolean, int, long, long, long, org.apache.hadoop.fs.permission.FsPermission, java.lang.String, java.lang.String, org.apache.hadoop.fs.Path, org.apache.hadoop.fs.Path, org.apache.hadoop.fs.BlockLocation[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor
-
- @param length a file's length
- @param isdir if the path is a directory
- @param block_replication the file's replication factor
- @param blocksize a file's block size
- @param modification_time a file's modification time
- @param access_time a file's access time
- @param permission a file's permission
- @param owner a file's owner
- @param group a file's group
- @param symlink symlink if the path is a symbolic link
- @param path the path's qualified name
- @param locations a file's block locations]]>
- </doc>
- </constructor>
- <method name="getBlockLocations" return="org.apache.hadoop.fs.BlockLocation[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the file's block locations
- @return the file's block locations]]>
- </doc>
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.fs.FileStatus"/>
- <doc>
- <![CDATA[Compare this FileStatus to another FileStatus
- @param o the FileStatus to be compared.
- @return a negative integer, zero, or a positive integer as this object
- is less than, equal to, or greater than the specified object.]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Compare if this object is equal to another object
- @param o the object to be compared.
- @return true if two file status has the same path name; false if not.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a hash code value for the object, which is defined as
- the hash code of the path name.
- @return a hash code value for the path name.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This class defines a FileStatus that includes a file's block locations.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.LocatedFileStatus -->
- <!-- start class org.apache.hadoop.fs.Options -->
- <class name="Options" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <constructor name="Options"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[This class contains options related to file system operations.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.Options -->
- <!-- start class org.apache.hadoop.fs.ParentNotDirectoryException -->
- <class name="ParentNotDirectoryException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ParentNotDirectoryException"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ParentNotDirectoryException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Indicates that the parent of specified Path is not a directory
- as expected.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.ParentNotDirectoryException -->
- <!-- start class org.apache.hadoop.fs.Path -->
- <class name="Path" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.lang.Comparable"/>
- <constructor name="Path" type="java.lang.String, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new Path based on the child path resolved against the parent path.
- @param parent the parent path
- @param child the child path]]>
- </doc>
- </constructor>
- <constructor name="Path" type="org.apache.hadoop.fs.Path, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new Path based on the child path resolved against the parent path.
- @param parent the parent path
- @param child the child path]]>
- </doc>
- </constructor>
- <constructor name="Path" type="java.lang.String, org.apache.hadoop.fs.Path"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new Path based on the child path resolved against the parent path.
- @param parent the parent path
- @param child the child path]]>
- </doc>
- </constructor>
- <constructor name="Path" type="org.apache.hadoop.fs.Path, org.apache.hadoop.fs.Path"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new Path based on the child path resolved against the parent path.
- @param parent the parent path
- @param child the child path]]>
- </doc>
- </constructor>
- <constructor name="Path" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IllegalArgumentException" type="java.lang.IllegalArgumentException"/>
- <doc>
- <![CDATA[Construct a path from a String. Path strings are URIs, but with
- unescaped elements and some additional normalization.
- @param pathString the path string]]>
- </doc>
- </constructor>
- <constructor name="Path" type="java.net.URI"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a path from a URI
- @param aUri the source URI]]>
- </doc>
- </constructor>
- <constructor name="Path" type="java.lang.String, java.lang.String, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a Path from components.
- @param scheme the scheme
- @param authority the authority
- @param path the path]]>
- </doc>
- </constructor>
- <method name="getPathWithoutSchemeAndAuthority" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Return a version of the given Path without the scheme information.
- @param path the source Path
- @return a copy of this Path without the scheme information]]>
- </doc>
- </method>
- <method name="mergePaths" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path1" type="org.apache.hadoop.fs.Path"/>
- <param name="path2" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Merge 2 paths such that the second path is appended relative to the first.
- The returned path has the scheme and authority of the first path. On
- Windows, the drive specification in the second path is discarded.
-
- @param path1 the first path
- @param path2 the second path, to be appended relative to path1
- @return the merged path]]>
- </doc>
- </method>
- <method name="isWindowsAbsolutePath" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="pathString" type="java.lang.String"/>
- <param name="slashed" type="boolean"/>
- <doc>
- <![CDATA[Determine whether a given path string represents an absolute path on
- Windows. e.g. "C:/a/b" is an absolute path. "C:a/b" is not.
- @param pathString the path string to evaluate
- @param slashed true if the given path is prefixed with "/"
- @return true if the supplied path looks like an absolute path with a Windows
- drive-specifier]]>
- </doc>
- </method>
- <method name="toUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Convert this Path to a URI.
- @return this Path as a URI]]>
- </doc>
- </method>
- <method name="getFileSystem" return="org.apache.hadoop.fs.FileSystem"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the FileSystem that owns this Path.
- @param conf the configuration to use when resolving the FileSystem
- @return the FileSystem that owns this Path
- @throws java.io.IOException thrown if there's an issue resolving the
- FileSystem]]>
- </doc>
- </method>
- <method name="isAbsoluteAndSchemeAuthorityNull" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the path component (i.e. directory) of this URI is
- absolute <strong>and</strong> the scheme is null, <b>and</b> the authority
- is null.
- @return whether the path is absolute and the URI has no scheme nor
- authority parts]]>
- </doc>
- </method>
- <method name="isUriPathAbsolute" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the path component (i.e. directory) of this URI is
- absolute.
- @return whether this URI's path is absolute]]>
- </doc>
- </method>
- <method name="isAbsolute" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the path component (i.e. directory) of this URI is
- absolute. This method is a wrapper for {@link #isUriPathAbsolute()}.
- @return whether this URI's path is absolute]]>
- </doc>
- </method>
- <method name="isRoot" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if and only if this path represents the root of a file system.
- @return true if and only if this path represents the root of a file system]]>
- </doc>
- </method>
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the final component of this path.
- @return the final component of this path]]>
- </doc>
- </method>
- <method name="getParent" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the parent of a path or null if at root.
- @return the parent of a path or null if at root]]>
- </doc>
- </method>
- <method name="suffix" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="suffix" type="java.lang.String"/>
- <doc>
- <![CDATA[Adds a suffix to the final name in the path.
- @param suffix the suffix to add
- @return a new path with the suffix added]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- </method>
- <method name="depth" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the number of elements in this path.
- @return the number of elements in this path]]>
- </doc>
- </method>
- <method name="makeQualified" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="use {@link #makeQualified(URI, Path)}">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <doc>
- <![CDATA[Returns a qualified path object for the {@link FileSystem}'s working
- directory.
-
- @param fs the target FileSystem
- @return a qualified path object for the FileSystem's working directory
- @deprecated use {@link #makeQualified(URI, Path)}]]>
- </doc>
- </method>
- <field name="SEPARATOR" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The directory separator, a slash.]]>
- </doc>
- </field>
- <field name="SEPARATOR_CHAR" type="char"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The directory separator, a slash, as a character.]]>
- </doc>
- </field>
- <field name="CUR_DIR" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The current directory, ".".]]>
- </doc>
- </field>
- <field name="WINDOWS" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Whether the current host is a Windows machine.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Names a file or directory in a {@link FileSystem}.
- Path strings use slash as the directory separator.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.Path -->
- <!-- start interface org.apache.hadoop.fs.PathFilter -->
- <interface name="PathFilter" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="accept" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Tests whether or not the specified abstract pathname should be
- included in a pathname list.
- @param path The abstract pathname to be tested
- @return <code>true</code> if and only if <code>pathname</code>
- should be included]]>
- </doc>
- </method>
- </interface>
- <!-- end interface org.apache.hadoop.fs.PathFilter -->
- <!-- start interface org.apache.hadoop.fs.PositionedReadable -->
- <interface name="PositionedReadable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read up to the specified number of bytes, from a given
- position within a file, and return the number of bytes read. This does not
- change the current offset of a file, and is thread-safe.
- <i>Warning: Not all filesystems satisfy the thread-safety requirement.</i>
- @param position position within file
- @param buffer destination buffer
- @param offset offset in the buffer
- @param length number of bytes to read
- @return actual number of bytes read; -1 means "none"
- @throws IOException IO problems.]]>
- </doc>
- </method>
- <method name="readFully"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read the specified number of bytes, from a given
- position within a file. This does not
- change the current offset of a file, and is thread-safe.
- <i>Warning: Not all filesystems satisfy the thread-safety requirement.</i>
- @param position position within file
- @param buffer destination buffer
- @param offset offset in the buffer
- @param length number of bytes to read
- @throws IOException IO problems.
- @throws EOFException the end of the data was reached before
- the read operation completed]]>
- </doc>
- </method>
- <method name="readFully"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="long"/>
- <param name="buffer" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read number of bytes equal to the length of the buffer, from a given
- position within a file. This does not
- change the current offset of a file, and is thread-safe.
- <i>Warning: Not all filesystems satisfy the thread-safety requirement.</i>
- @param position position within file
- @param buffer destination buffer
- @throws IOException IO problems.
- @throws EOFException the end of the data was reached before
- the read operation completed]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Stream that permits positional reading.
- Implementations are required to implement thread-safe operations; this may
- be supported by concurrent access to the data, or by using a synchronization
- mechanism to serialize access.
- Not all implementations meet this requirement. Those that do not cannot
- be used as a backing store for some applications, such as Apache HBase.
- Independent of whether or not they are thread safe, some implementations
- may make the intermediate state of the system, specifically the position
- obtained in {@code Seekable.getPos()} visible.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.PositionedReadable -->
- <!-- start class org.apache.hadoop.fs.QuotaUsage -->
- <class name="QuotaUsage" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="QuotaUsage"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <constructor name="QuotaUsage" type="org.apache.hadoop.fs.QuotaUsage.Builder"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Build the instance based on the builder.]]>
- </doc>
- </constructor>
- <method name="setQuota"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="quota" type="long"/>
- </method>
- <method name="setSpaceConsumed"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="spaceConsumed" type="long"/>
- </method>
- <method name="setSpaceQuota"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="spaceQuota" type="long"/>
- </method>
- <method name="getFileAndDirectoryCount" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the directory count.]]>
- </doc>
- </method>
- <method name="getQuota" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the directory quota.]]>
- </doc>
- </method>
- <method name="getSpaceConsumed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return (disk) space consumed.]]>
- </doc>
- </method>
- <method name="getSpaceQuota" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return (disk) space quota.]]>
- </doc>
- </method>
- <method name="getTypeQuota" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="type" type="org.apache.hadoop.fs.StorageType"/>
- <doc>
- <![CDATA[Return storage type quota.]]>
- </doc>
- </method>
- <method name="getTypeConsumed" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="type" type="org.apache.hadoop.fs.StorageType"/>
- <doc>
- <![CDATA[Return storage type consumed.]]>
- </doc>
- </method>
- <method name="isTypeQuotaSet" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return true if any storage type quota has been set.]]>
- </doc>
- </method>
- <method name="isTypeConsumedAvailable" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return true if any storage type consumption information is available.]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="to" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getHeader" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the header of the output.
- @return the header of the output]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="hOption" type="boolean"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="hOption" type="boolean"/>
- <param name="tOption" type="boolean"/>
- <param name="types" type="java.util.List"/>
- <doc>
- <![CDATA[Return the string representation of the object in the output format.
- if hOption is false file sizes are returned in bytes
- if hOption is true file sizes are returned in human readable
- @param hOption a flag indicating if human readable output if to be used
- @return the string representation of the object]]>
- </doc>
- </method>
- <method name="getQuotaUsage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="hOption" type="boolean"/>
- </method>
- <method name="getTypesQuotaUsage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="hOption" type="boolean"/>
- <param name="types" type="java.util.List"/>
- </method>
- <method name="getStorageTypeHeader" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="storageTypes" type="java.util.List"/>
- <doc>
- <![CDATA[return the header of with the StorageTypes.
- @param storageTypes
- @return storage header string]]>
- </doc>
- </method>
- <field name="QUOTA_STRING_FORMAT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Output format:
- <----12----> <----15----> <----15----> <----15----> <-------18------->
- QUOTA REMAINING_QUATA SPACE_QUOTA SPACE_QUOTA_REM FILE_NAME]]>
- </doc>
- </field>
- <field name="SPACE_QUOTA_STRING_FORMAT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="QUOTA_HEADER_FIELDS" type="java.lang.String[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="QUOTA_HEADER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Store the quota usage of a directory.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.QuotaUsage -->
- <!-- start class org.apache.hadoop.fs.RawLocalFileSystem -->
- <class name="RawLocalFileSystem" extends="org.apache.hadoop.fs.FileSystem"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="RawLocalFileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="useStatIfAvailable"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="pathToFile" return="java.io.File"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Convert a path to a File.]]>
- </doc>
- </method>
- <method name="getUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="initialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createOutputStream" return="java.io.OutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="append" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createOutputStreamWithMode" return="java.io.OutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="append" type="boolean"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flags" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="rename" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="handleEmptyDstDirectoryOnWindows" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="srcFile" type="java.io.File"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="dstFile" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete the given path to a file or directory.
- @param p the path to delete
- @param recursive to delete sub-directories
- @return true if the file or directory and all its contents were deleted
- @throws IOException if p is non-empty and recursive is false]]>
- </doc>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkOneDir" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="p2f" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkOneDirWithMode" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="p2f" type="java.io.File"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Creates the specified directory hierarchy. Does not
- treat existence as an error.]]>
- </doc>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setWorkingDirectory"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newDir" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Set the working directory to the given directory.]]>
- </doc>
- </method>
- <method name="getWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getInitialWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="getStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="moveFromLocalFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startLocalOutput" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsOutputFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="completeLocalOutput"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fsWorkingFile" type="org.apache.hadoop.fs.Path"/>
- <param name="tmpLocalFile" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Use the command chown to set owner.]]>
- </doc>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Use the command chmod to set permission.]]>
- </doc>
- </method>
- <method name="setTimes"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="mtime" type="long"/>
- <param name="atime" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Sets the {@link Path}'s last modified time and last access time to
- the given valid times.
- @param mtime the modification time to set (only if no less than zero).
- @param atime the access time to set (only if no less than zero).
- @throws IOException if setting the times fails.]]>
- </doc>
- </method>
- <method name="supportsSymlinks" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.fs.Path"/>
- <param name="link" type="org.apache.hadoop.fs.Path"/>
- <param name="createParent" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileLinkStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a FileStatus representing the given path. If the path refers
- to a symlink return a FileStatus representing the link rather than
- the object the link refers to.]]>
- </doc>
- </method>
- <method name="getLinkTarget" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Implement the FileSystem API for the raw local filesystem.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.RawLocalFileSystem -->
- <!-- start class org.apache.hadoop.fs.ReadOption -->
- <class name="ReadOption" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.ReadOption[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.ReadOption"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <doc>
- <![CDATA[Options that can be used when reading from a FileSystem.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.ReadOption -->
- <!-- start interface org.apache.hadoop.fs.Seekable -->
- <interface name="Seekable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="seek"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="pos" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Seek to the given offset from the start of the file.
- The next read() will be from that location. Can't
- seek past the end of the file.]]>
- </doc>
- </method>
- <method name="getPos" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the current offset from the start of the file]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Stream that permits seeking.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.Seekable -->
- <!-- start class org.apache.hadoop.fs.StorageStatistics -->
- <class name="StorageStatistics" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="StorageStatistics" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the name of this StorageStatistics object.]]>
- </doc>
- </method>
- <method name="getScheme" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the associated file system scheme if this is scheme specific,
- else return null.]]>
- </doc>
- </method>
- <method name="getLongStatistics" return="java.util.Iterator"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get an iterator over all the currently tracked long statistics.
- The values returned will depend on the type of FileSystem or FileContext
- object. The values do not necessarily reflect a snapshot in time.]]>
- </doc>
- </method>
- <method name="getLong" return="java.lang.Long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the value of a statistic.
- @return null if the statistic is not being tracked or is not a
- long statistic. The value of the statistic, otherwise.]]>
- </doc>
- </method>
- <method name="isTracked" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.String"/>
- <doc>
- <![CDATA[Return true if a statistic is being tracked.
- @return True only if the statistic is being tracked.]]>
- </doc>
- </method>
- <method name="reset"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reset all the statistic data.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[StorageStatistics contains statistics data for a FileSystem or FileContext
- instance.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.StorageStatistics -->
- <!-- start class org.apache.hadoop.fs.StorageType -->
- <class name="StorageType" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.StorageType[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.StorageType"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="isTransient" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="supportTypeQuota" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isMovable" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="asList" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getMovableTypes" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getTypesSupportingQuota" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="parseStorageType" return="org.apache.hadoop.fs.StorageType"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- </method>
- <method name="parseStorageType" return="org.apache.hadoop.fs.StorageType"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- </method>
- <field name="DEFAULT" type="org.apache.hadoop.fs.StorageType"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="EMPTY_ARRAY" type="org.apache.hadoop.fs.StorageType[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Defines the types of supported storage media. The default storage
- medium is assumed to be DISK.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.StorageType -->
- <!-- start interface org.apache.hadoop.fs.StreamCapabilities -->
- <interface name="StreamCapabilities" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="hasCapability" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="capability" type="java.lang.String"/>
- <doc>
- <![CDATA[Query the stream for a specific capability.
- @param capability string to query the stream support for.
- @return True if the stream supports capability.]]>
- </doc>
- </method>
- <field name="HFLUSH" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stream hflush capability implemented by {@link Syncable#hflush()}.]]>
- </doc>
- </field>
- <field name="HSYNC" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stream hsync capability implemented by {@link Syncable#hsync()}.]]>
- </doc>
- </field>
- <field name="READAHEAD" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stream setReadahead capability implemented by
- {@link CanSetReadahead#setReadahead(Long)}.]]>
- </doc>
- </field>
- <field name="DROPBEHIND" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stream setDropBehind capability implemented by
- {@link CanSetDropBehind#setDropBehind(Boolean)}.]]>
- </doc>
- </field>
- <field name="UNBUFFER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stream unbuffer capability implemented by {@link CanUnbuffer#unbuffer()}.]]>
- </doc>
- </field>
- <field name="READBYTEBUFFER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stream read(ByteBuffer) capability implemented by
- {@link ByteBufferReadable#read(java.nio.ByteBuffer)}.]]>
- </doc>
- </field>
- <field name="PREADBYTEBUFFER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stream read(long, ByteBuffer) capability implemented by
- {@link ByteBufferPositionedReadable#read(long, java.nio.ByteBuffer)}.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Interface to query streams for supported capabilities.
- Capability strings must be in lower case.
- Constant strings are chosen over enums in order to allow other file systems
- to define their own capabilities.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.StreamCapabilities -->
- <!-- start class org.apache.hadoop.fs.StreamCapabilitiesPolicy -->
- <class name="StreamCapabilitiesPolicy" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="StreamCapabilitiesPolicy"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="unbuffer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <doc>
- <![CDATA[Implement the policy for {@link CanUnbuffer#unbuffer()}.
- @param in the input stream]]>
- </doc>
- </method>
- <field name="CAN_UNBUFFER_NOT_IMPLEMENTED_MESSAGE" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Static methods to implement policies for {@link StreamCapabilities}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.StreamCapabilitiesPolicy -->
- <!-- start interface org.apache.hadoop.fs.Syncable -->
- <interface name="Syncable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="sync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="As of HADOOP 0.21.0, replaced by hflush">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[@deprecated As of HADOOP 0.21.0, replaced by hflush
- @see #hflush()]]>
- </doc>
- </method>
- <method name="hflush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Flush out the data in client's user buffer. After the return of
- this call, new readers will see the data.
- @throws IOException if any error occurs]]>
- </doc>
- </method>
- <method name="hsync"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Similar to posix fsync, flush out the data in client's user buffer
- all the way to the disk device (but the disk may have it in its cache).
- @throws IOException if error occurs]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This interface for flush/sync operation.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.fs.Syncable -->
- <!-- start class org.apache.hadoop.fs.Trash -->
- <class name="Trash" extends="org.apache.hadoop.conf.Configured"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="Trash" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct a trash can accessor.
- @param conf a Configuration]]>
- </doc>
- </constructor>
- <constructor name="Trash" type="org.apache.hadoop.fs.FileSystem, org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct a trash can accessor for the FileSystem provided.
- @param fs the FileSystem
- @param conf a Configuration]]>
- </doc>
- </constructor>
- <method name="moveToAppropriateTrash" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="p" type="org.apache.hadoop.fs.Path"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[In case of the symlinks or mount points, one has to move the appropriate
- trashbin in the actual volume of the path p being deleted.
- Hence we get the file system of the fully-qualified resolved-path and
- then move the path p to the trashbin in that volume,
- @param fs - the filesystem of path p
- @param p - the path being deleted - to be moved to trasg
- @param conf - configuration
- @return false if the item is already in the trash or trash is disabled
- @throws IOException on error]]>
- </doc>
- </method>
- <method name="isEnabled" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns whether the trash is enabled for this filesystem]]>
- </doc>
- </method>
- <method name="moveToTrash" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Move a file or directory to the current trash directory.
- @return false if the item is already in the trash or trash is disabled]]>
- </doc>
- </method>
- <method name="checkpoint"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a trash checkpoint.]]>
- </doc>
- </method>
- <method name="expunge"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete old checkpoint(s).]]>
- </doc>
- </method>
- <method name="getEmptier" return="java.lang.Runnable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a {@link Runnable} that periodically empties the trash of all
- users, intended to be run by the superuser.]]>
- </doc>
- </method>
- <method name="getCurrentTrashDir" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Provides a trash facility which supports pluggable Trash policies.
- See the implementation of the configured TrashPolicy for more
- details.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.Trash -->
- <!-- start class org.apache.hadoop.fs.TrashPolicy -->
- <class name="TrashPolicy" extends="org.apache.hadoop.conf.Configured"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="TrashPolicy"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="initialize"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link #initialize(Configuration, FileSystem)} instead.">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="home" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Used to setup the trash policy. Must be implemented by all TrashPolicy
- implementations.
- @param conf the configuration to be used
- @param fs the filesystem to be used
- @param home the home directory
- @deprecated Use {@link #initialize(Configuration, FileSystem)} instead.]]>
- </doc>
- </method>
- <method name="initialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <doc>
- <![CDATA[Used to setup the trash policy. Must be implemented by all TrashPolicy
- implementations. Different from initialize(conf, fs, home), this one does
- not assume trash always under /user/$USER due to HDFS encryption zone.
- @param conf the configuration to be used
- @param fs the filesystem to be used]]>
- </doc>
- </method>
- <method name="isEnabled" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns whether the Trash Policy is enabled for this filesystem.]]>
- </doc>
- </method>
- <method name="moveToTrash" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Move a file or directory to the current trash directory.
- @return false if the item is already in the trash or trash is disabled]]>
- </doc>
- </method>
- <method name="createCheckpoint"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a trash checkpoint.]]>
- </doc>
- </method>
- <method name="deleteCheckpoint"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete old trash checkpoint(s).]]>
- </doc>
- </method>
- <method name="getCurrentTrashDir" return="org.apache.hadoop.fs.Path"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the current working directory of the Trash Policy
- This API does not work with files deleted from encryption zone when HDFS
- data encryption at rest feature is enabled as rename file between
- encryption zones or encryption zone and non-encryption zone is not allowed.
- The caller is recommend to use the new API
- TrashPolicy#getCurrentTrashDir(Path path).
- It returns the trash location correctly for the path specified no matter
- the path is in encryption zone or not.]]>
- </doc>
- </method>
- <method name="getCurrentTrashDir" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the current trash directory for path specified based on the Trash
- Policy
- @param path path to be deleted
- @return current trash directory for the path to be deleted
- @throws IOException]]>
- </doc>
- </method>
- <method name="getEmptier" return="java.lang.Runnable"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return a {@link Runnable} that periodically empties the trash of all
- users, intended to be run by the superuser.]]>
- </doc>
- </method>
- <method name="getInstance" return="org.apache.hadoop.fs.TrashPolicy"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #getInstance(Configuration, FileSystem)} instead.">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="home" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Get an instance of the configured TrashPolicy based on the value
- of the configuration parameter fs.trash.classname.
- @param conf the configuration to be used
- @param fs the file system to be used
- @param home the home directory
- @return an instance of TrashPolicy
- @deprecated Use {@link #getInstance(Configuration, FileSystem)} instead.]]>
- </doc>
- </method>
- <method name="getInstance" return="org.apache.hadoop.fs.TrashPolicy"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <doc>
- <![CDATA[Get an instance of the configured TrashPolicy based on the value
- of the configuration parameter fs.trash.classname.
- @param conf the configuration to be used
- @param fs the file system to be used
- @return an instance of TrashPolicy]]>
- </doc>
- </method>
- <field name="fs" type="org.apache.hadoop.fs.FileSystem"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="trash" type="org.apache.hadoop.fs.Path"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="deletionInterval" type="long"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[This interface is used for implementing different Trash policies.
- Provides factory method to create instances of the configured Trash policy.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.TrashPolicy -->
- <!-- start class org.apache.hadoop.fs.UnsupportedFileSystemException -->
- <class name="UnsupportedFileSystemException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="UnsupportedFileSystemException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs exception with the specified detail message.
- @param message exception message.]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[File system for a given file system name/scheme is not supported]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.UnsupportedFileSystemException -->
- <!-- start class org.apache.hadoop.fs.XAttrCodec -->
- <class name="XAttrCodec" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.XAttrCodec[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.XAttrCodec"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="decodeValue" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Decode string representation of a value and check whether it's
- encoded. If the given string begins with 0x or 0X, it expresses
- a hexadecimal number. If the given string begins with 0s or 0S,
- base64 encoding is expected. If the given string is enclosed in
- double quotes, the inner string is treated as text. Otherwise
- the given string is treated as text.
- @param value string representation of the value.
- @return byte[] the value
- @throws IOException]]>
- </doc>
- </method>
- <method name="encodeValue" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="byte[]"/>
- <param name="encoding" type="org.apache.hadoop.fs.XAttrCodec"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Encode byte[] value to string representation with encoding.
- Values encoded as text strings are enclosed in double quotes (\"),
- while strings encoded as hexadecimal and base64 are prefixed with
- 0x and 0s, respectively.
- @param value byte[] value
- @param encoding
- @return String string representation of value
- @throws IOException]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The value of <code>XAttr</code> is byte[], this class is to
- covert byte[] to some kind of string representation or convert back.
- String representation is convenient for display and input. For example
- display in screen as shell response and json response, input as http
- or shell parameter.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.XAttrCodec -->
- <!-- start class org.apache.hadoop.fs.XAttrSetFlag -->
- <class name="XAttrSetFlag" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.XAttrSetFlag[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.XAttrSetFlag"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="validate"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="xAttrName" type="java.lang.String"/>
- <param name="xAttrExists" type="boolean"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- </class>
- <!-- end class org.apache.hadoop.fs.XAttrSetFlag -->
- <doc>
- <![CDATA[An abstract file system API.]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.fs.crypto">
- </package>
- <package name="org.apache.hadoop.fs.ftp">
- <!-- start class org.apache.hadoop.fs.ftp.FTPException -->
- <class name="FTPException" extends="java.lang.RuntimeException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="FTPException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FTPException" type="java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FTPException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[A class to wrap a {@link Throwable} into a Runtime Exception.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.ftp.FTPException -->
- <!-- start class org.apache.hadoop.fs.ftp.FTPFileSystem -->
- <class name="FTPFileSystem" extends="org.apache.hadoop.fs.FileSystem"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="FTPFileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getScheme" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the protocol scheme for the FileSystem.
- <p/>
- @return <code>ftp</code>]]>
- </doc>
- </method>
- <method name="getDefaultPort" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the default port for this FTPFileSystem.
- @return the default port]]>
- </doc>
- </method>
- <method name="initialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[A stream obtained via this call must be closed before using other APIs of
- this class or else the invocation will block.]]>
- </doc>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[This optional operation is not yet supported.]]>
- </doc>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="rename" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setWorkingDirectory"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newDir" type="org.apache.hadoop.fs.Path"/>
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_BUFFER_SIZE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_BLOCK_SIZE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FS_FTP_USER_PREFIX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FS_FTP_HOST" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FS_FTP_HOST_PORT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FS_FTP_PASSWORD_PREFIX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FS_FTP_DATA_CONNECTION_MODE" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FS_FTP_TRANSFER_MODE" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="E_SAME_DIRECTORY_ONLY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[<p>
- A {@link FileSystem} backed by an FTP client provided by <a
- href="http://commons.apache.org/net/">Apache Commons Net</a>.
- </p>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.ftp.FTPFileSystem -->
- </package>
- <package name="org.apache.hadoop.fs.http">
- </package>
- <package name="org.apache.hadoop.fs.permission">
- <!-- start class org.apache.hadoop.fs.permission.AccessControlException -->
- <class name="AccessControlException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link org.apache.hadoop.security.AccessControlException}
- instead.">
- <constructor name="AccessControlException"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default constructor is needed for unwrapping from
- {@link org.apache.hadoop.ipc.RemoteException}.]]>
- </doc>
- </constructor>
- <constructor name="AccessControlException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs an {@link AccessControlException}
- with the specified detail message.
- @param s the detail message.]]>
- </doc>
- </constructor>
- <constructor name="AccessControlException" type="java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs a new exception with the specified cause and a detail
- message of <tt>(cause==null ? null : cause.toString())</tt> (which
- typically contains the class and detail message of <tt>cause</tt>).
- @param cause the cause (which is saved for later retrieval by the
- {@link #getCause()} method). (A <tt>null</tt> value is
- permitted, and indicates that the cause is nonexistent or
- unknown.)]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[An exception class for access control related issues.
- @deprecated Use {@link org.apache.hadoop.security.AccessControlException}
- instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.permission.AccessControlException -->
- <!-- start class org.apache.hadoop.fs.permission.AclEntry -->
- <class name="AclEntry" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getType" return="org.apache.hadoop.fs.permission.AclEntryType"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the ACL entry type.
- @return AclEntryType ACL entry type]]>
- </doc>
- </method>
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the optional ACL entry name.
- @return String ACL entry name, or null if undefined]]>
- </doc>
- </method>
- <method name="getPermission" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the set of permissions in the ACL entry.
- @return FsAction set of permissions in the ACL entry]]>
- </doc>
- </method>
- <method name="getScope" return="org.apache.hadoop.fs.permission.AclEntryScope"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the scope of the ACL entry.
- @return AclEntryScope scope of the ACL entry]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toStringStable" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a string representation guaranteed to be stable across versions to
- satisfy backward compatibility requirements, such as for shell command
- output or serialization. The format of this string representation matches
- what is expected by the {@link #parseAclSpec(String, boolean)} and
- {@link #parseAclEntry(String, boolean)} methods.
- @return stable, backward compatible string representation]]>
- </doc>
- </method>
- <method name="parseAclSpec" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="aclSpec" type="java.lang.String"/>
- <param name="includePermission" type="boolean"/>
- <doc>
- <![CDATA[Parses a string representation of an ACL spec into a list of AclEntry
- objects. Example: "user::rwx,user:foo:rw-,group::r--,other::---"
- The expected format of ACL entries in the string parameter is the same
- format produced by the {@link #toStringStable()} method.
-
- @param aclSpec
- String representation of an ACL spec.
- @param includePermission
- for setAcl operations this will be true. i.e. AclSpec should
- include permissions.<br>
- But for removeAcl operation it will be false. i.e. AclSpec should
- not contain permissions.<br>
- Example: "user:foo,group:bar"
- @return Returns list of {@link AclEntry} parsed]]>
- </doc>
- </method>
- <method name="parseAclEntry" return="org.apache.hadoop.fs.permission.AclEntry"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="aclStr" type="java.lang.String"/>
- <param name="includePermission" type="boolean"/>
- <doc>
- <![CDATA[Parses a string representation of an ACL into a AclEntry object.<br>
- The expected format of ACL entries in the string parameter is the same
- format produced by the {@link #toStringStable()} method.
-
- @param aclStr
- String representation of an ACL.<br>
- Example: "user:foo:rw-"
- @param includePermission
- for setAcl operations this will be true. i.e. Acl should include
- permissions.<br>
- But for removeAcl operation it will be false. i.e. Acl should not
- contain permissions.<br>
- Example: "user:foo,group:bar,mask::"
- @return Returns an {@link AclEntry} object]]>
- </doc>
- </method>
- <method name="aclSpecToString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="aclSpec" type="java.util.List"/>
- <doc>
- <![CDATA[Convert a List of AclEntries into a string - the reverse of parseAclSpec.
- @param aclSpec List of AclEntries to convert
- @return String representation of aclSpec]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Defines a single entry in an ACL. An ACL entry has a type (user, group,
- mask, or other), an optional name (referring to a specific user or group), a
- set of permissions (any combination of read, write and execute), and a scope
- (access or default). AclEntry instances are immutable. Use a {@link Builder}
- to create a new instance.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.permission.AclEntry -->
- <!-- start class org.apache.hadoop.fs.permission.AclEntryScope -->
- <class name="AclEntryScope" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.permission.AclEntryScope[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.permission.AclEntryScope"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <doc>
- <![CDATA[Specifies the scope or intended usage of an ACL entry.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.permission.AclEntryScope -->
- <!-- start class org.apache.hadoop.fs.permission.AclEntryType -->
- <class name="AclEntryType" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.permission.AclEntryType[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.permission.AclEntryType"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toStringStable" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a string representation guaranteed to be stable across versions to
- satisfy backward compatibility requirements, such as for shell command
- output or serialization.
- @return stable, backward compatible string representation]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Specifies the type of an ACL entry.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.permission.AclEntryType -->
- <!-- start class org.apache.hadoop.fs.permission.AclStatus -->
- <class name="AclStatus" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getOwner" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the file owner.
- @return String file owner]]>
- </doc>
- </method>
- <method name="getGroup" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the file group.
- @return String file group]]>
- </doc>
- </method>
- <method name="isStickyBit" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the sticky bit.
-
- @return boolean sticky bit]]>
- </doc>
- </method>
- <method name="getEntries" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the list of all ACL entries, ordered by their natural ordering.
- @return List<AclEntry> unmodifiable ordered list of all ACL entries]]>
- </doc>
- </method>
- <method name="getPermission" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the permission set for the path
- @return {@link FsPermission} for the path]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getEffectivePermission" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="entry" type="org.apache.hadoop.fs.permission.AclEntry"/>
- <doc>
- <![CDATA[Get the effective permission for the AclEntry
- @param entry AclEntry to get the effective action]]>
- </doc>
- </method>
- <method name="getEffectivePermission" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="entry" type="org.apache.hadoop.fs.permission.AclEntry"/>
- <param name="permArg" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IllegalArgumentException" type="java.lang.IllegalArgumentException"/>
- <doc>
- <![CDATA[Get the effective permission for the AclEntry. <br>
- Recommended to use this API ONLY if client communicates with the old
- NameNode, needs to pass the Permission for the path to get effective
- permission, else use {@link AclStatus#getEffectivePermission(AclEntry)}.
- @param entry AclEntry to get the effective action
- @param permArg Permission for the path. However if the client is NOT
- communicating with old namenode, then this argument will not have
- any preference.
- @return Returns the effective permission for the entry.
- @throws IllegalArgumentException If the client communicating with old
- namenode and permission is not passed as an argument.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[An AclStatus contains the ACL information of a specific file. AclStatus
- instances are immutable. Use a {@link Builder} to create a new instance.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.permission.AclStatus -->
- <!-- start class org.apache.hadoop.fs.permission.FsAction -->
- <class name="FsAction" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.fs.permission.FsAction[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="implies" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="that" type="org.apache.hadoop.fs.permission.FsAction"/>
- <doc>
- <![CDATA[Return true if this action implies that action.
- @param that]]>
- </doc>
- </method>
- <method name="and" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="that" type="org.apache.hadoop.fs.permission.FsAction"/>
- <doc>
- <![CDATA[AND operation.]]>
- </doc>
- </method>
- <method name="or" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="that" type="org.apache.hadoop.fs.permission.FsAction"/>
- <doc>
- <![CDATA[OR operation.]]>
- </doc>
- </method>
- <method name="not" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[NOT operation.]]>
- </doc>
- </method>
- <method name="getFsAction" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="permission" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the FsAction enum for String representation of permissions
-
- @param permission
- 3-character string representation of permission. ex: rwx
- @return Returns FsAction enum if the corresponding FsAction exists for permission.
- Otherwise returns null]]>
- </doc>
- </method>
- <field name="SYMBOL" type="java.lang.String"
- transient="false" volatile="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Symbolic representation]]>
- </doc>
- </field>
- <doc>
- <![CDATA[File system actions, e.g. read, write, etc.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.permission.FsAction -->
- <!-- start class org.apache.hadoop.fs.permission.FsPermission -->
- <class name="FsPermission" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="FsPermission" type="org.apache.hadoop.fs.permission.FsAction, org.apache.hadoop.fs.permission.FsAction, org.apache.hadoop.fs.permission.FsAction"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct by the given {@link FsAction}.
- @param u user action
- @param g group action
- @param o other action]]>
- </doc>
- </constructor>
- <constructor name="FsPermission" type="org.apache.hadoop.fs.permission.FsAction, org.apache.hadoop.fs.permission.FsAction, org.apache.hadoop.fs.permission.FsAction, boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FsPermission" type="short"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct by the given mode.
- @param mode
- @see #toShort()]]>
- </doc>
- </constructor>
- <constructor name="FsPermission" type="org.apache.hadoop.fs.permission.FsPermission"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Copy constructor
-
- @param other other permission]]>
- </doc>
- </constructor>
- <constructor name="FsPermission" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct by given mode, either in octal or symbolic format.
- @param mode mode as a string, either in octal or symbolic format
- @throws IllegalArgumentException if <code>mode</code> is invalid]]>
- </doc>
- </constructor>
- <method name="createImmutable" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="permission" type="short"/>
- <doc>
- <![CDATA[Create an immutable {@link FsPermission} object.]]>
- </doc>
- </method>
- <method name="getUserAction" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return user {@link FsAction}.]]>
- </doc>
- </method>
- <method name="getGroupAction" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return group {@link FsAction}.]]>
- </doc>
- </method>
- <method name="getOtherAction" return="org.apache.hadoop.fs.permission.FsAction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return other {@link FsAction}.]]>
- </doc>
- </method>
- <method name="fromShort"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="n" type="short"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="read" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create and initialize a {@link FsPermission} from {@link DataInput}.]]>
- </doc>
- </method>
- <method name="toShort" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Encode the object to a short.]]>
- </doc>
- </method>
- <method name="toExtendedShort" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Encodes the object to a short. Unlike {@link #toShort()}, this method may
- return values outside the fixed range 00000 - 01777 if extended features
- are encoded into this permission, such as the ACL bit.
- @return short extended short representation of this permission]]>
- </doc>
- </method>
- <method name="toOctal" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the FsPermission in an octal format.
- @return short Unlike {@link #toShort()} which provides a binary
- representation, this method returns the standard octal style permission.]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="applyUMask" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="umask" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <doc>
- <![CDATA[Apply a umask to this permission and return a new one.
- The umask is used by create, mkdir, and other Hadoop filesystem operations.
- The mode argument for these operations is modified by removing the bits
- which are set in the umask. Thus, the umask limits the permissions which
- newly created files and directories get.
- @param umask The umask to use
-
- @return The effective permission]]>
- </doc>
- </method>
- <method name="getUMask" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Get the user file creation mask (umask)
-
- {@code UMASK_LABEL} config param has umask value that is either symbolic
- or octal.
-
- Symbolic umask is applied relative to file mode creation mask;
- the permission op characters '+' clears the corresponding bit in the mask,
- '-' sets bits in the mask.
-
- Octal umask, the specified bits are set in the file mode creation mask.
-
- {@code DEPRECATED_UMASK_LABEL} config param has umask value set to decimal.]]>
- </doc>
- </method>
- <method name="getStickyBit" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getAclBit" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if there is also an ACL (access control list).
- @return boolean true if there is also an ACL (access control list).]]>
- </doc>
- </method>
- <method name="getEncryptedBit" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the file is encrypted or directory is in an encryption zone]]>
- </doc>
- </method>
- <method name="setUMask"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="umask" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <doc>
- <![CDATA[Set the user file creation mask (umask)]]>
- </doc>
- </method>
- <method name="getDefault" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the default permission for directory and symlink.
- In previous versions, this default permission was also used to
- create files, so files created end up with ugo+x permission.
- See HADOOP-9155 for detail.
- Two new methods are added to solve this, please use
- {@link FsPermission#getDirDefault()} for directory, and use
- {@link FsPermission#getFileDefault()} for file.
- This method is kept for compatibility.]]>
- </doc>
- </method>
- <method name="getDirDefault" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the default permission for directory.]]>
- </doc>
- </method>
- <method name="getFileDefault" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the default permission for file.]]>
- </doc>
- </method>
- <method name="getCachePoolDefault" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the default permission for cache pools.]]>
- </doc>
- </method>
- <method name="valueOf" return="org.apache.hadoop.fs.permission.FsPermission"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="unixSymbolicPermission" type="java.lang.String"/>
- <doc>
- <![CDATA[Create a FsPermission from a Unix symbolic permission string
- @param unixSymbolicPermission e.g. "-rw-rw-rw-"]]>
- </doc>
- </method>
- <field name="MAX_PERMISSION_LENGTH" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Maximum acceptable length of a permission string to parse]]>
- </doc>
- </field>
- <field name="DEPRECATED_UMASK_LABEL" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[umask property label deprecated key and code in getUMask method
- to accommodate it may be removed in version .23]]>
- </doc>
- </field>
- <field name="UMASK_LABEL" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT_UMASK" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A class for file/directory permissions.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.permission.FsPermission -->
- </package>
- <package name="org.apache.hadoop.fs.sftp">
- </package>
- <package name="org.apache.hadoop.fs.shell.find">
- </package>
- <package name="org.apache.hadoop.fs.viewfs">
- <!-- start class org.apache.hadoop.fs.viewfs.NotInMountpointException -->
- <class name="NotInMountpointException" extends="java.lang.UnsupportedOperationException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="NotInMountpointException" type="org.apache.hadoop.fs.Path, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="NotInMountpointException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getMessage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[NotInMountpointException extends the UnsupportedOperationException.
- Exception class used in cases where the given path is not mounted
- through viewfs.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.viewfs.NotInMountpointException -->
- <!-- start class org.apache.hadoop.fs.viewfs.ViewFileSystem -->
- <class name="ViewFileSystem" extends="org.apache.hadoop.fs.FileSystem"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ViewFileSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[This is the constructor with the signature needed by
- {@link FileSystem#createFileSystem(URI, Configuration)}
-
- After this constructor is called initialize() is called.
- @throws IOException]]>
- </doc>
- </constructor>
- <constructor name="ViewFileSystem" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convenience Constructor for apps to call directly
- @param conf
- @throws IOException]]>
- </doc>
- </constructor>
- <method name="getScheme" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the protocol scheme for the FileSystem.
- @return <code>viewfs</code>]]>
- </doc>
- </method>
- <method name="initialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="theUri" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Called after a new FileSystem instance is constructed.
- @param theUri a uri whose authority section names the host, port, etc. for
- this FileSystem
- @param conf the configuration]]>
- </doc>
- </method>
- <method name="getTrashCanLocation" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getUri" return="java.net.URI"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="resolvePath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getWorkingDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setWorkingDirectory"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="new_dir" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="append" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createNonRecursive" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="flags" type="java.util.EnumSet"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="create" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="overwrite" type="boolean"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileBlockLocations" return="org.apache.hadoop.fs.BlockLocation[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileStatus"/>
- <param name="start" type="long"/>
- <param name="len" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="access"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="mode" type="org.apache.hadoop.fs.permission.FsAction"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="filter" type="org.apache.hadoop.fs.PathFilter"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkdirs" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="rename" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setReplication" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setTimes"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="mtime" type="long"/>
- <param name="atime" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="modifyAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeDefaultAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getAclStatus" return="org.apache.hadoop.fs.permission.AclStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttr" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="names" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listXAttrs" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setVerifyChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="verifyChecksum" type="boolean"/>
- </method>
- <method name="getDefaultBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDefaultReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getDefaultBlockSize" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="getDefaultReplication" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getContentSummary" return="org.apache.hadoop.fs.ContentSummary"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getQuotaUsage" return="org.apache.hadoop.fs.QuotaUsage"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setWriteChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="writeChecksum" type="boolean"/>
- </method>
- <method name="getChildFileSystems" return="org.apache.hadoop.fs.FileSystem[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getMountPoints" return="org.apache.hadoop.fs.viewfs.ViewFileSystem.MountPoint[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="renameSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotOldName" type="java.lang.String"/>
- <param name="snapshotNewName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="deleteSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getTrashRoot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Get the trash root directory for current user when the path
- specified is deleted.
- If FORCE_INSIDE_MOUNT_POINT flag is not set, return the default trash root
- from targetFS.
- When FORCE_INSIDE_MOUNT_POINT is set to true,
- <ol>
- <li>
- If the trash root for path p is in the same mount point as path p,
- and one of:
- <ol>
- <li>The mount point isn't at the top of the target fs.</li>
- <li>The resolved path of path is root (in fallback FS).</li>
- <li>The trash isn't in user's target fs home directory
- get the corresponding viewFS path for the trash root and return
- it.
- </li>
- </ol>
- </li>
- <li>
- else, return the trash root under the root of the mount point
- (/{mntpoint}/.Trash/{user}).
- </li>
- </ol>
- These conditions handle several different important cases:
- <ul>
- <li>File systems may need to have more local trash roots, such as
- encryption zones or snapshot roots.</li>
- <li>The fallback mount should use the user's home directory.</li>
- <li>Cloud storage systems should not use trash in an implicity defined
- home directory, per a container, unless it is the fallback fs.</li>
- </ul>
- @param path the trash root of the path to be determined.
- @return the trash root path.]]>
- </doc>
- </method>
- <method name="getTrashRoots" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="allUsers" type="boolean"/>
- <doc>
- <![CDATA[Get all the trash roots for current user or all users.
- When FORCE_INSIDE_MOUNT_POINT is set to true, we also return trash roots
- under the root of each mount point, with their viewFS paths.
- @param allUsers return trash roots for all users if true.
- @return all Trash root directories.]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[ViewFileSystem (extends the FileSystem interface) implements a client-side
- mount table. Its spec and implementation is identical to {@link ViewFs}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.viewfs.ViewFileSystem -->
- <!-- start class org.apache.hadoop.fs.viewfs.ViewFs -->
- <class name="ViewFs" extends="org.apache.hadoop.fs.AbstractFileSystem"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ViewFs" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="URISyntaxException" type="java.net.URISyntaxException"/>
- </constructor>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getServerDefaults" return="org.apache.hadoop.fs.FsServerDefaults"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getUriDefaultPort" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getHomeDirectory" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="resolvePath" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createInternal" return="org.apache.hadoop.fs.FSDataOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="flag" type="java.util.EnumSet"/>
- <param name="absolutePermission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="checksumOpt" type="org.apache.hadoop.fs.Options.ChecksumOpt"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="delete" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="recursive" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileBlockLocations" return="org.apache.hadoop.fs.BlockLocation[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="start" type="long"/>
- <param name="len" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileChecksum" return="org.apache.hadoop.fs.FileChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="access"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="mode" type="org.apache.hadoop.fs.permission.FsAction"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFileLinkStatus" return="org.apache.hadoop.fs.FileStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnsupportedFileSystemException" type="org.apache.hadoop.fs.UnsupportedFileSystemException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getFsStatus" return="org.apache.hadoop.fs.FsStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listStatusIterator" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listLocatedStatus" return="org.apache.hadoop.fs.RemoteIterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listStatus" return="org.apache.hadoop.fs.FileStatus[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="mkdir"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <param name="createParent" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="open" return="org.apache.hadoop.fs.FSDataInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="bufferSize" type="int"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="truncate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="newLength" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="renameInternal"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <param name="overwrite" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- </method>
- <method name="renameInternal"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <param name="dst" type="org.apache.hadoop.fs.Path"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileAlreadyExistsException" type="org.apache.hadoop.fs.FileAlreadyExistsException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="ParentNotDirectoryException" type="org.apache.hadoop.fs.ParentNotDirectoryException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="supportsSymlinks" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createSymlink"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.fs.Path"/>
- <param name="link" type="org.apache.hadoop.fs.Path"/>
- <param name="createParent" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- </method>
- <method name="getLinkTarget" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setOwner"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="username" type="java.lang.String"/>
- <param name="groupname" type="java.lang.String"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setPermission"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="permission" type="org.apache.hadoop.fs.permission.FsPermission"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setReplication" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="replication" type="short"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setTimes"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="org.apache.hadoop.fs.Path"/>
- <param name="mtime" type="long"/>
- <param name="atime" type="long"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <exception name="UnresolvedLinkException" type="org.apache.hadoop.fs.UnresolvedLinkException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setVerifyChecksum"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="verifyChecksum" type="boolean"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getMountPoints" return="org.apache.hadoop.fs.viewfs.ViewFs.MountPoint[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDelegationTokens" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="renewer" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="isValidName" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="java.lang.String"/>
- </method>
- <method name="modifyAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAclEntries"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeDefaultAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setAcl"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="aclSpec" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getAclStatus" return="org.apache.hadoop.fs.permission.AclStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <param name="value" type="byte[]"/>
- <param name="flag" type="java.util.EnumSet"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttr" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getXAttrs" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="names" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="listXAttrs" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="removeXAttr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSnapshot" return="org.apache.hadoop.fs.Path"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="renameSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotOldName" type="java.lang.String"/>
- <param name="snapshotNewName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="deleteSnapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="snapshotName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="setStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="path" type="org.apache.hadoop.fs.Path"/>
- <param name="policyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="unsetStoragePolicy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getStoragePolicy" return="org.apache.hadoop.fs.BlockStoragePolicySpi"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="org.apache.hadoop.fs.Path"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Retrieve the storage policy for a given file or directory.
- @param src file or directory path.
- @return storage policy for give file.
- @throws IOException]]>
- </doc>
- </method>
- <doc>
- <![CDATA[ViewFs (extends the AbstractFileSystem interface) implements a client-side
- mount table. The viewFs file system is implemented completely in memory on
- the client side. The client-side mount table allows a client to provide a
- customized view of a file system namespace that is composed from
- one or more individual file systems (a localFs or Hdfs, S3fs, etc).
- For example one could have a mount table that provides links such as
- <ul>
- <li> /user -> hdfs://nnContainingUserDir/user
- <li> /project/foo -> hdfs://nnProject1/projects/foo
- <li> /project/bar -> hdfs://nnProject2/projects/bar
- <li> /tmp -> hdfs://nnTmp/privateTmpForUserXXX
- </ul>
-
- ViewFs is specified with the following URI: <b>viewfs:///</b>
- <p>
- To use viewfs one would typically set the default file system in the
- config (i.e. fs.defaultFS < = viewfs:///) along with the
- mount table config variables as described below.
-
- <p>
- <b> ** Config variables to specify the mount table entries ** </b>
- <p>
-
- The file system is initialized from the standard Hadoop config through
- config variables.
- See {@link FsConstants} for URI and Scheme constants;
- See {@link Constants} for config var constants;
- see {@link ConfigUtil} for convenient lib.
-
- <p>
- All the mount table config entries for view fs are prefixed by
- <b>fs.viewfs.mounttable.</b>
- For example the above example can be specified with the following
- config variables:
- <ul>
- <li> fs.viewfs.mounttable.default.link./user=
- hdfs://nnContainingUserDir/user
- <li> fs.viewfs.mounttable.default.link./project/foo=
- hdfs://nnProject1/projects/foo
- <li> fs.viewfs.mounttable.default.link./project/bar=
- hdfs://nnProject2/projects/bar
- <li> fs.viewfs.mounttable.default.link./tmp=
- hdfs://nnTmp/privateTmpForUserXXX
- </ul>
-
- The default mount table (when no authority is specified) is
- from config variables prefixed by <b>fs.viewFs.mounttable.default </b>
- The authority component of a URI can be used to specify a different mount
- table. For example,
- <ul>
- <li> viewfs://sanjayMountable/
- </ul>
- is initialized from fs.viewFs.mounttable.sanjayMountable.* config variables.
-
- <p>
- <b> **** Merge Mounts **** </b>(NOTE: merge mounts are not implemented yet.)
- <p>
-
- One can also use "MergeMounts" to merge several directories (this is
- sometimes called union-mounts or junction-mounts in the literature.
- For example of the home directories are stored on say two file systems
- (because they do not fit on one) then one could specify a mount
- entry such as following merges two dirs:
- <ul>
- <li> /user -> hdfs://nnUser1/user,hdfs://nnUser2/user
- </ul>
- Such a mergeLink can be specified with the following config var where ","
- is used as the separator for each of links to be merged:
- <ul>
- <li> fs.viewfs.mounttable.default.linkMerge./user=
- hdfs://nnUser1/user,hdfs://nnUser1/user
- </ul>
- A special case of the merge mount is where mount table's root is merged
- with the root (slash) of another file system:
- <ul>
- <li> fs.viewfs.mounttable.default.linkMergeSlash=hdfs://nn99/
- </ul>
- In this cases the root of the mount table is merged with the root of
- <b>hdfs://nn99/ </b>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.fs.viewfs.ViewFs -->
- </package>
- <package name="org.apache.hadoop.ha">
- <!-- start class org.apache.hadoop.ha.BadFencingConfigurationException -->
- <class name="BadFencingConfigurationException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="BadFencingConfigurationException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="BadFencingConfigurationException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Indicates that the operator has specified an invalid configuration
- for fencing methods.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.ha.BadFencingConfigurationException -->
- <!-- start class org.apache.hadoop.ha.FailoverFailedException -->
- <class name="FailoverFailedException" extends="java.lang.Exception"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="FailoverFailedException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FailoverFailedException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Exception thrown to indicate service failover has failed.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.ha.FailoverFailedException -->
- <!-- start interface org.apache.hadoop.ha.FenceMethod -->
- <interface name="FenceMethod" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="checkArgs"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String"/>
- <exception name="BadFencingConfigurationException" type="org.apache.hadoop.ha.BadFencingConfigurationException"/>
- <doc>
- <![CDATA[Verify that the given fencing method's arguments are valid.
- @param args the arguments provided in the configuration. This may
- be null if the operator did not configure any arguments.
- @throws BadFencingConfigurationException if the arguments are invalid]]>
- </doc>
- </method>
- <method name="tryFence" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="org.apache.hadoop.ha.HAServiceTarget"/>
- <param name="args" type="java.lang.String"/>
- <exception name="BadFencingConfigurationException" type="org.apache.hadoop.ha.BadFencingConfigurationException"/>
- <doc>
- <![CDATA[Attempt to fence the target node.
- @param target the address (host:ipcport) of the service to fence
- @param args the configured arguments, which were checked at startup by
- {@link #checkArgs(String)}
- @return true if fencing was successful, false if unsuccessful or
- indeterminate
- @throws BadFencingConfigurationException if the configuration was
- determined to be invalid only at runtime]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A fencing method is a method by which one node can forcibly prevent
- another node from making continued progress. This might be implemented
- by killing a process on the other node, by denying the other node's
- access to shared storage, or by accessing a PDU to cut the other node's
- power.
- <p>
- Since these methods are often vendor- or device-specific, operators
- may implement this interface in order to achieve fencing.
- <p>
- Fencing is configured by the operator as an ordered list of methods to
- attempt. Each method will be tried in turn, and the next in the list
- will only be attempted if the previous one fails. See {@link NodeFencer}
- for more information.
- <p>
- If an implementation also implements {@link Configurable} then its
- <code>setConf</code> method will be called upon instantiation.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.ha.FenceMethod -->
- <!-- start interface org.apache.hadoop.ha.HAServiceProtocol -->
- <interface name="HAServiceProtocol" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="monitorHealth"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="HealthCheckFailedException" type="org.apache.hadoop.ha.HealthCheckFailedException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Monitor the health of service. This periodically called by the HA
- frameworks to monitor the health of the service.
-
- Service is expected to perform checks to ensure it is functional.
- If the service is not healthy due to failure or partial failure,
- it is expected to throw {@link HealthCheckFailedException}.
- The definition of service not healthy is left to the service.
-
- Note that when health check of an Active service fails,
- failover to standby may be done.
-
- @throws HealthCheckFailedException
- if the health check of a service fails.
- @throws AccessControlException
- if access is denied.
- @throws IOException
- if other errors happen]]>
- </doc>
- </method>
- <method name="transitionToActive"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="reqInfo" type="org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo"/>
- <exception name="ServiceFailedException" type="org.apache.hadoop.ha.ServiceFailedException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Request service to transition to active state. No operation, if the
- service is already in active state.
-
- @throws ServiceFailedException
- if transition from standby to active fails.
- @throws AccessControlException
- if access is denied.
- @throws IOException
- if other errors happen]]>
- </doc>
- </method>
- <method name="transitionToStandby"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="reqInfo" type="org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo"/>
- <exception name="ServiceFailedException" type="org.apache.hadoop.ha.ServiceFailedException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Request service to transition to standby state. No operation, if the
- service is already in standby state.
-
- @throws ServiceFailedException
- if transition from active to standby fails.
- @throws AccessControlException
- if access is denied.
- @throws IOException
- if other errors happen]]>
- </doc>
- </method>
- <method name="transitionToObserver"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="reqInfo" type="org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo"/>
- <exception name="ServiceFailedException" type="org.apache.hadoop.ha.ServiceFailedException"/>
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Request service to transition to observer state. No operation, if the
- service is already in observer state.
- @throws ServiceFailedException
- if transition from standby to observer fails.
- @throws AccessControlException
- if access is denied.
- @throws IOException
- if other errors happen]]>
- </doc>
- </method>
- <method name="getServiceStatus" return="org.apache.hadoop.ha.HAServiceStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="AccessControlException" type="org.apache.hadoop.security.AccessControlException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the current status of the service. The status indicates
- the current <em>state</em> (e.g ACTIVE/STANDBY) as well as
- some additional information.
- @throws AccessControlException
- if access is denied.
- @throws IOException
- if other errors happen
- @see HAServiceStatus]]>
- </doc>
- </method>
- <field name="versionID" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Initial version of the protocol]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Protocol interface that provides High Availability related primitives to
- monitor and fail-over the service.
-
- This interface could be used by HA frameworks to manage the service.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.ha.HAServiceProtocol -->
- <!-- start class org.apache.hadoop.ha.HAServiceProtocolHelper -->
- <class name="HAServiceProtocolHelper" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="HAServiceProtocolHelper"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="monitorHealth"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="svc" type="org.apache.hadoop.ha.HAServiceProtocol"/>
- <param name="reqInfo" type="org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="transitionToActive"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="svc" type="org.apache.hadoop.ha.HAServiceProtocol"/>
- <param name="reqInfo" type="org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="transitionToStandby"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="svc" type="org.apache.hadoop.ha.HAServiceProtocol"/>
- <param name="reqInfo" type="org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="transitionToObserver"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="svc" type="org.apache.hadoop.ha.HAServiceProtocol"/>
- <param name="reqInfo" type="org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Helper for making {@link HAServiceProtocol} RPC calls. This helper
- unwraps the {@link RemoteException} to specific exceptions.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.ha.HAServiceProtocolHelper -->
- <!-- start class org.apache.hadoop.ha.HAServiceTarget -->
- <class name="HAServiceTarget" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="HAServiceTarget"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getAddress" return="java.net.InetSocketAddress"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the IPC address of the target node.]]>
- </doc>
- </method>
- <method name="getHealthMonitorAddress" return="java.net.InetSocketAddress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns an optional separate RPC server address for health checks at the
- target node. If defined, then this address is used by the health monitor
- for the {@link HAServiceProtocol#monitorHealth()} and
- {@link HAServiceProtocol#getServiceStatus()} calls. This can be useful for
- separating out these calls onto separate RPC handlers to protect against
- resource exhaustion in the main RPC handler pool. If null (which is the
- default implementation), then all RPC calls go to the address defined by
- {@link #getAddress()}.
- @return IPC address of the lifeline RPC server on the target node, or null
- if no lifeline RPC server is used]]>
- </doc>
- </method>
- <method name="getZKFCAddress" return="java.net.InetSocketAddress"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the IPC address of the ZKFC on the target node]]>
- </doc>
- </method>
- <method name="getFencer" return="org.apache.hadoop.ha.NodeFencer"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return a Fencer implementation configured for this target node]]>
- </doc>
- </method>
- <method name="checkFencingConfigured"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="BadFencingConfigurationException" type="org.apache.hadoop.ha.BadFencingConfigurationException"/>
- <doc>
- <![CDATA[@throws BadFencingConfigurationException if the fencing configuration
- appears to be invalid. This is divorced from the above
- {@link #getFencer()} method so that the configuration can be checked
- during the pre-flight phase of failover.]]>
- </doc>
- </method>
- <method name="getProxy" return="org.apache.hadoop.ha.HAServiceProtocol"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="timeoutMs" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[@return a proxy to connect to the target HA Service.]]>
- </doc>
- </method>
- <method name="setTransitionTargetHAStatus"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="status" type="org.apache.hadoop.ha.HAServiceProtocol.HAServiceState"/>
- </method>
- <method name="getTransitionTargetHAStatus" return="org.apache.hadoop.ha.HAServiceProtocol.HAServiceState"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getHealthMonitorProxy" return="org.apache.hadoop.ha.HAServiceProtocol"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="timeoutMs" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Returns a proxy to connect to the target HA service for health monitoring.
- If {@link #getHealthMonitorAddress()} is implemented to return a non-null
- address, then this proxy will connect to that address. Otherwise, the
- returned proxy defaults to using {@link #getAddress()}, which means this
- method's behavior is identical to {@link #getProxy(Configuration, int)}.
- @param conf Configuration
- @param timeoutMs timeout in milliseconds
- @return a proxy to connect to the target HA service for health monitoring
- @throws IOException if there is an error]]>
- </doc>
- </method>
- <method name="getZKFCProxy" return="org.apache.hadoop.ha.ZKFCProtocol"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="timeoutMs" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[@return a proxy to the ZKFC which is associated with this HA service.]]>
- </doc>
- </method>
- <method name="getFencingParameters" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="addFencingParameters"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="ret" type="java.util.Map"/>
- <doc>
- <![CDATA[Hook to allow subclasses to add any parameters they would like to
- expose to fencing implementations/scripts. Fencing methods are free
- to use this map as they see fit -- notably, the shell script
- implementation takes each entry, prepends 'target_', substitutes
- '_' for '.', and adds it to the environment of the script.
- Subclass implementations should be sure to delegate to the superclass
- implementation as well as adding their own keys.
- @param ret map which can be mutated to pass parameters to the fencer]]>
- </doc>
- </method>
- <method name="isAutoFailoverEnabled" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return true if auto failover should be considered enabled]]>
- </doc>
- </method>
- <method name="supportObserver" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return true if this target supports the Observer state, false otherwise.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Represents a target of the client side HA administration commands.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.ha.HAServiceTarget -->
- <!-- start class org.apache.hadoop.ha.HealthCheckFailedException -->
- <class name="HealthCheckFailedException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="HealthCheckFailedException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="HealthCheckFailedException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Exception thrown to indicate that health check of a service failed.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.ha.HealthCheckFailedException -->
- <!-- start class org.apache.hadoop.ha.ServiceFailedException -->
- <class name="ServiceFailedException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ServiceFailedException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ServiceFailedException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Exception thrown to indicate that an operation performed
- to modify the state of a service or application failed.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.ha.ServiceFailedException -->
- </package>
- <package name="org.apache.hadoop.ha.protocolPB">
- <!-- start interface org.apache.hadoop.ha.protocolPB.HAServiceProtocolPB -->
- <interface name="HAServiceProtocolPB" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.ha.proto.HAServiceProtocolProtos.HAServiceProtocolService.BlockingInterface"/>
- <implements name="org.apache.hadoop.ipc.VersionedProtocol"/>
- </interface>
- <!-- end interface org.apache.hadoop.ha.protocolPB.HAServiceProtocolPB -->
- <!-- start interface org.apache.hadoop.ha.protocolPB.ZKFCProtocolPB -->
- <interface name="ZKFCProtocolPB" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.ha.proto.ZKFCProtocolProtos.ZKFCProtocolService.BlockingInterface"/>
- <implements name="org.apache.hadoop.ipc.VersionedProtocol"/>
- </interface>
- <!-- end interface org.apache.hadoop.ha.protocolPB.ZKFCProtocolPB -->
- </package>
- <package name="org.apache.hadoop.http.lib">
- <doc>
- <![CDATA[This package provides user-selectable (via configuration) classes that add
- functionality to the web UI. They are configured as a list of classes in the
- configuration parameter <b>hadoop.http.filter.initializers</b>.
- <ul>
- <li> <b>StaticUserWebFilter</b> - An authorization plugin that makes all
- users a static configured user.
- </ul>]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.io">
- <!-- start class org.apache.hadoop.io.AbstractMapWritable -->
- <class name="AbstractMapWritable" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="AbstractMapWritable"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[constructor.]]>
- </doc>
- </constructor>
- <method name="addToMap"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="clazz" type="java.lang.Class"/>
- <doc>
- <![CDATA[Add a Class to the maps if it is not already present.]]>
- </doc>
- </method>
- <method name="getClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="id" type="byte"/>
- <doc>
- <![CDATA[@return the Class class for the specified id]]>
- </doc>
- </method>
- <method name="getId" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="clazz" type="java.lang.Class"/>
- <doc>
- <![CDATA[@return the id for the specified Class]]>
- </doc>
- </method>
- <method name="copy"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="other" type="org.apache.hadoop.io.Writable"/>
- <doc>
- <![CDATA[Used by child copy constructors.]]>
- </doc>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the conf]]>
- </doc>
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[@param conf the conf to set]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Abstract base class for MapWritable and SortedMapWritable
-
- Unlike org.apache.nutch.crawl.MapWritable, this class allows creation of
- MapWritable<Writable, MapWritable> so the CLASS_TO_ID and ID_TO_CLASS
- maps travel with the class instead of being static.
-
- Class ids range from 1 to 127 so there can be at most 127 distinct classes
- in any specific map instance.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.AbstractMapWritable -->
- <!-- start class org.apache.hadoop.io.ArrayFile -->
- <class name="ArrayFile" extends="org.apache.hadoop.io.MapFile"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ArrayFile"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[A dense file-based mapping from integers to values.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.ArrayFile -->
- <!-- start class org.apache.hadoop.io.ArrayPrimitiveWritable -->
- <class name="ArrayPrimitiveWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="ArrayPrimitiveWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct an empty instance, for use during Writable read]]>
- </doc>
- </constructor>
- <constructor name="ArrayPrimitiveWritable" type="java.lang.Class"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct an instance of known type but no value yet
- for use with type-specific wrapper classes]]>
- </doc>
- </constructor>
- <constructor name="ArrayPrimitiveWritable" type="java.lang.Object"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Wrap an existing array of primitives
- @param value - array of primitives]]>
- </doc>
- </constructor>
- <method name="get" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the original array.
- Client must cast it back to type componentType[]
- (or may use type-specific wrapper classes).
- @return - original array as Object]]>
- </doc>
- </method>
- <method name="getComponentType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDeclaredComponentType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isDeclaredComponentType" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="componentType" type="java.lang.Class"/>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.lang.Object"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[This is a wrapper class. It wraps a Writable implementation around
- an array of primitives (e.g., int[], long[], etc.), with optimized
- wire format, and without creating new objects per element.
-
- This is a wrapper class only; it does not make a copy of the
- underlying array.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.ArrayPrimitiveWritable -->
- <!-- start class org.apache.hadoop.io.ArrayWritable -->
- <class name="ArrayWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="ArrayWritable" type="java.lang.Class"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ArrayWritable" type="java.lang.Class, org.apache.hadoop.io.Writable[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ArrayWritable" type="java.lang.String[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getValueClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toStrings" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toArray" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="values" type="org.apache.hadoop.io.Writable[]"/>
- </method>
- <method name="get" return="org.apache.hadoop.io.Writable[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A Writable for arrays containing instances of a class. The elements of this
- writable must all be instances of the same class. If this writable will be
- the input for a Reducer, you will need to create a subclass that sets the
- value to be of the proper type.
- For example:
- <code>
- public class IntArrayWritable extends ArrayWritable {
- public IntArrayWritable() {
- super(IntWritable.class);
- }
- }
- </code>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.ArrayWritable -->
- <!-- start class org.apache.hadoop.io.BinaryComparable -->
- <class name="BinaryComparable" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.lang.Comparable"/>
- <constructor name="BinaryComparable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getLength" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return n st bytes 0..n-1 from {#getBytes()} are valid.]]>
- </doc>
- </method>
- <method name="getBytes" return="byte[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return representative byte array for this instance.]]>
- </doc>
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="org.apache.hadoop.io.BinaryComparable"/>
- <doc>
- <![CDATA[Compare bytes from {#getBytes()}.
- @see org.apache.hadoop.io.WritableComparator#compareBytes(byte[],int,int,byte[],int,int)]]>
- </doc>
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Compare bytes from {#getBytes()} to those provided.]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="java.lang.Object"/>
- <doc>
- <![CDATA[Return true if bytes from {#getBytes()} match.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a hash of the bytes returned from {#getBytes()}.
- @see org.apache.hadoop.io.WritableComparator#hashBytes(byte[],int)]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Interface supported by {@link org.apache.hadoop.io.WritableComparable}
- types supporting ordering/permutation by a representative set of bytes.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.BinaryComparable -->
- <!-- start class org.apache.hadoop.io.BloomMapFile -->
- <class name="BloomMapFile" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="BloomMapFile"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="delete"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <field name="BLOOM_FILE_NAME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HASH_COUNT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[This class extends {@link MapFile} and provides very much the same
- functionality. However, it uses dynamic Bloom filters to provide
- quick membership test for keys, and it offers a fast version of
- {@link Reader#get(WritableComparable, Writable)} operation, especially in
- case of sparsely populated MapFile-s.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.BloomMapFile -->
- <!-- start class org.apache.hadoop.io.BooleanWritable -->
- <class name="BooleanWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="BooleanWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="BooleanWritable" type="boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="boolean"/>
- <doc>
- <![CDATA[Set the value of the BooleanWritable]]>
- </doc>
- </method>
- <method name="get" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the value of the BooleanWritable]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.BooleanWritable"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A WritableComparable for booleans.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.BooleanWritable -->
- <!-- start interface org.apache.hadoop.io.ByteBufferPool -->
- <interface name="ByteBufferPool" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getBuffer" return="java.nio.ByteBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="direct" type="boolean"/>
- <param name="length" type="int"/>
- <doc>
- <![CDATA[Get a new direct ByteBuffer. The pool can provide this from
- removing a buffer from its internal cache, or by allocating a
- new buffer.
- @param direct Whether the buffer should be direct.
- @param length The minimum length the buffer will have.
- @return A new ByteBuffer. This ByteBuffer must be direct.
- Its capacity can be less than what was requested, but
- must be at least 1 byte.]]>
- </doc>
- </method>
- <method name="putBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buffer" type="java.nio.ByteBuffer"/>
- <doc>
- <![CDATA[Release a buffer back to the pool.
- The pool may choose to put this buffer into its cache.
- @param buffer a direct bytebuffer]]>
- </doc>
- </method>
- </interface>
- <!-- end interface org.apache.hadoop.io.ByteBufferPool -->
- <!-- start class org.apache.hadoop.io.BytesWritable -->
- <class name="BytesWritable" extends="org.apache.hadoop.io.BinaryComparable"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="BytesWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a zero-size sequence.]]>
- </doc>
- </constructor>
- <constructor name="BytesWritable" type="byte[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a BytesWritable using the byte array as the initial value.
- @param bytes This array becomes the backing storage for the object.]]>
- </doc>
- </constructor>
- <constructor name="BytesWritable" type="byte[], int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a BytesWritable using the byte array as the initial value
- and length as the length. Use this constructor if the array is larger
- than the value it represents.
- @param bytes This array becomes the backing storage for the object.
- @param length The number of bytes to use from array.]]>
- </doc>
- </constructor>
- <method name="copyBytes" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get a copy of the bytes that is exactly the length of the data.
- See {@link #getBytes()} for faster access to the underlying array.]]>
- </doc>
- </method>
- <method name="getBytes" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the data backing the BytesWritable. Please use {@link #copyBytes()}
- if you need the returned array to be precisely the length of the data.
- @return The data is only valid between 0 and getLength() - 1.]]>
- </doc>
- </method>
- <method name="get" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link #getBytes()} instead.">
- <doc>
- <![CDATA[Get the data from the BytesWritable.
- @deprecated Use {@link #getBytes()} instead.]]>
- </doc>
- </method>
- <method name="getLength" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the current size of the buffer.]]>
- </doc>
- </method>
- <method name="getSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link #getLength()} instead.">
- <doc>
- <![CDATA[Get the current size of the buffer.
- @deprecated Use {@link #getLength()} instead.]]>
- </doc>
- </method>
- <method name="setSize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="size" type="int"/>
- <doc>
- <![CDATA[Change the size of the buffer. The values in the old range are preserved
- and any new values are undefined. The capacity is changed if it is
- necessary.
- @param size The new number of bytes]]>
- </doc>
- </method>
- <method name="getCapacity" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the capacity, which is the maximum size that could handled without
- resizing the backing storage.
- @return The number of bytes]]>
- </doc>
- </method>
- <method name="setCapacity"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="new_cap" type="int"/>
- <doc>
- <![CDATA[Change the capacity of the backing storage.
- The data is preserved.
- @param new_cap The new capacity in bytes.]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newData" type="org.apache.hadoop.io.BytesWritable"/>
- <doc>
- <![CDATA[Set the BytesWritable to the contents of the given newData.
- @param newData the value to set this BytesWritable to.]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newData" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <doc>
- <![CDATA[Set the value to a copy of the given byte range
- @param newData the new values to copy in
- @param offset the offset in newData to start at
- @param length the number of bytes to copy]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="right_obj" type="java.lang.Object"/>
- <doc>
- <![CDATA[Are the two byte sequences equal?]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Generate the stream of bytes as hex pairs separated by ' '.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A byte sequence that is usable as a key or value.
- It is resizable and distinguishes between the size of the sequence and
- the current capacity. The hash function is the front of the md5 of the
- buffer. The sort order is the same as memcmp.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.BytesWritable -->
- <!-- start class org.apache.hadoop.io.ByteWritable -->
- <class name="ByteWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="ByteWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ByteWritable" type="byte"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="byte"/>
- <doc>
- <![CDATA[Set the value of this ByteWritable.]]>
- </doc>
- </method>
- <method name="get" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this ByteWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a ByteWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.ByteWritable"/>
- <doc>
- <![CDATA[Compares two ByteWritables.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A WritableComparable for a single byte.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.ByteWritable -->
- <!-- start interface org.apache.hadoop.io.Closeable -->
- <interface name="Closeable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="use java.io.Closeable">
- <implements name="java.io.Closeable"/>
- <doc>
- <![CDATA[@deprecated use java.io.Closeable]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.Closeable -->
- <!-- start class org.apache.hadoop.io.CompressedWritable -->
- <class name="CompressedWritable" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="CompressedWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="ensureInflated"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Must be called by all methods which access fields to ensure that the data
- has been uncompressed.]]>
- </doc>
- </method>
- <method name="readFieldsCompressed"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Subclasses implement this instead of {@link #readFields(DataInput)}.]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeCompressed"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Subclasses implement this instead of {@link #write(DataOutput)}.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A base-class for Writables which store themselves compressed and lazily
- inflate on field access. This is useful for large objects whose fields are
- not be altered during a map or reduce operation: leaving the field data
- compressed makes copying the instance from one file to another much
- faster.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.CompressedWritable -->
- <!-- start class org.apache.hadoop.io.DataOutputOutputStream -->
- <class name="DataOutputOutputStream" extends="java.io.OutputStream"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="constructOutputStream" return="java.io.OutputStream"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <doc>
- <![CDATA[Construct an OutputStream from the given DataOutput. If 'out'
- is already an OutputStream, simply returns it. Otherwise, wraps
- it in an OutputStream.
- @param out the DataOutput to wrap
- @return an OutputStream instance that outputs to 'out']]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[OutputStream implementation that wraps a DataOutput.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.DataOutputOutputStream -->
- <!-- start class org.apache.hadoop.io.DefaultStringifier -->
- <class name="DefaultStringifier" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Stringifier"/>
- <constructor name="DefaultStringifier" type="org.apache.hadoop.conf.Configuration, java.lang.Class"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="fromString" return="T"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="str" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="T"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="store"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="item" type="K"/>
- <param name="keyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Stores the item in the configuration with the given keyName.
-
- @param <K> the class of the item
- @param conf the configuration to store
- @param item the object to be stored
- @param keyName the name of the key to use
- @throws IOException : forwards Exceptions from the underlying
- {@link Serialization} classes.]]>
- </doc>
- </method>
- <method name="load" return="K"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="keyName" type="java.lang.String"/>
- <param name="itemClass" type="java.lang.Class"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Restores the object from the configuration.
-
- @param <K> the class of the item
- @param conf the configuration to use
- @param keyName the name of the key to use
- @param itemClass the class of the item
- @return restored object
- @throws IOException : forwards Exceptions from the underlying
- {@link Serialization} classes.]]>
- </doc>
- </method>
- <method name="storeArray"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="items" type="K[]"/>
- <param name="keyName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Stores the array of items in the configuration with the given keyName.
-
- @param <K> the class of the item
- @param conf the configuration to use
- @param items the objects to be stored
- @param keyName the name of the key to use
- @throws IndexOutOfBoundsException if the items array is empty
- @throws IOException : forwards Exceptions from the underlying
- {@link Serialization} classes.]]>
- </doc>
- </method>
- <method name="loadArray" return="K[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="keyName" type="java.lang.String"/>
- <param name="itemClass" type="java.lang.Class"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Restores the array of objects from the configuration.
-
- @param <K> the class of the item
- @param conf the configuration to use
- @param keyName the name of the key to use
- @param itemClass the class of the item
- @return restored object
- @throws IOException : forwards Exceptions from the underlying
- {@link Serialization} classes.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[DefaultStringifier is the default implementation of the {@link Stringifier}
- interface which stringifies the objects using base64 encoding of the
- serialized version of the objects. The {@link Serializer} and
- {@link Deserializer} are obtained from the {@link SerializationFactory}.
- <br>
- DefaultStringifier offers convenience methods to store/load objects to/from
- the configuration.
-
- @param <T> the class of the objects to stringify]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.DefaultStringifier -->
- <!-- start class org.apache.hadoop.io.DoubleWritable -->
- <class name="DoubleWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="DoubleWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="DoubleWritable" type="double"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="double"/>
- </method>
- <method name="get" return="double"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a DoubleWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.DoubleWritable"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Writable for Double values.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.DoubleWritable -->
- <!-- start class org.apache.hadoop.io.ElasticByteBufferPool -->
- <class name="ElasticByteBufferPool" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.ByteBufferPool"/>
- <constructor name="ElasticByteBufferPool"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getBuffer" return="java.nio.ByteBuffer"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="direct" type="boolean"/>
- <param name="length" type="int"/>
- </method>
- <method name="putBuffer"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buffer" type="java.nio.ByteBuffer"/>
- </method>
- <doc>
- <![CDATA[This is a simple ByteBufferPool which just creates ByteBuffers as needed.
- It also caches ByteBuffers after they're released. It will always return
- the smallest cached buffer with at least the capacity you request.
- We don't try to do anything clever here like try to limit the maximum cache
- size.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.ElasticByteBufferPool -->
- <!-- start class org.apache.hadoop.io.EnumSetWritable -->
- <class name="EnumSetWritable" extends="java.util.AbstractCollection"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="EnumSetWritable" type="java.util.EnumSet, java.lang.Class"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a new EnumSetWritable. If the <tt>value</tt> argument is null or
- its size is zero, the <tt>elementType</tt> argument must not be null. If
- the argument <tt>value</tt>'s size is bigger than zero, the argument
- <tt>elementType</tt> is not be used.
-
- @param value
- @param elementType]]>
- </doc>
- </constructor>
- <constructor name="EnumSetWritable" type="java.util.EnumSet"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a new EnumSetWritable. Argument <tt>value</tt> should not be null
- or empty.
-
- @param value]]>
- </doc>
- </constructor>
- <method name="iterator" return="java.util.Iterator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="size" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="add" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="e" type="E"/>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.util.EnumSet"/>
- <param name="elementType" type="java.lang.Class"/>
- <doc>
- <![CDATA[reset the EnumSetWritable with specified
- <tt>value</value> and <tt>elementType</tt>. If the <tt>value</tt> argument
- is null or its size is zero, the <tt>elementType</tt> argument must not be
- null. If the argument <tt>value</tt>'s size is bigger than zero, the
- argument <tt>elementType</tt> is not be used.
-
- @param value
- @param elementType]]>
- </doc>
- </method>
- <method name="get" return="java.util.EnumSet"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this EnumSetWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true if <code>o</code> is an EnumSetWritable with the same value,
- or both are null.]]>
- </doc>
- </method>
- <method name="getElementType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the class of all the elements of the underlying EnumSetWriable. It
- may return null.
-
- @return the element class]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <doc>
- <![CDATA[A Writable wrapper for EnumSet.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.EnumSetWritable -->
- <!-- start class org.apache.hadoop.io.FloatWritable -->
- <class name="FloatWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="FloatWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="FloatWritable" type="float"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="float"/>
- <doc>
- <![CDATA[Set the value of this FloatWritable.]]>
- </doc>
- </method>
- <method name="get" return="float"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this FloatWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a FloatWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.FloatWritable"/>
- <doc>
- <![CDATA[Compares two FloatWritables.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A WritableComparable for floats.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.FloatWritable -->
- <!-- start class org.apache.hadoop.io.GenericWritable -->
- <class name="GenericWritable" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="GenericWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="org.apache.hadoop.io.Writable"/>
- <doc>
- <![CDATA[Set the instance that is wrapped.
-
- @param obj]]>
- </doc>
- </method>
- <method name="get" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the wrapped instance.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getTypes" return="java.lang.Class[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return all classes that may be wrapped. Subclasses should implement this
- to return a constant array of classes.]]>
- </doc>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <doc>
- <![CDATA[A wrapper for Writable instances.
- <p>
- When two sequence files, which have same Key type but different Value
- types, are mapped out to reduce, multiple Value types is not allowed.
- In this case, this class can help you wrap instances with different types.
- </p>
-
- <p>
- Compared with <code>ObjectWritable</code>, this class is much more effective,
- because <code>ObjectWritable</code> will append the class declaration as a String
- into the output file in every Key-Value pair.
- </p>
-
- <p>
- Generic Writable implements {@link Configurable} interface, so that it will be
- configured by the framework. The configuration is passed to the wrapped objects
- implementing {@link Configurable} interface <i>before deserialization</i>.
- </p>
-
- how to use it: <br>
- 1. Write your own class, such as GenericObject, which extends GenericWritable.<br>
- 2. Implements the abstract method <code>getTypes()</code>, defines
- the classes which will be wrapped in GenericObject in application.
- Attention: this classes defined in <code>getTypes()</code> method, must
- implement <code>Writable</code> interface.
- <br><br>
-
- The code looks like this:
- <blockquote><pre>
- public class GenericObject extends GenericWritable {
-
- private static Class[] CLASSES = {
- ClassType1.class,
- ClassType2.class,
- ClassType3.class,
- };
- protected Class[] getTypes() {
- return CLASSES;
- }
- }
- </pre></blockquote>
-
- @since Nov 8, 2006]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.GenericWritable -->
- <!-- start class org.apache.hadoop.io.IntWritable -->
- <class name="IntWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="IntWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="IntWritable" type="int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Set the value of this IntWritable.]]>
- </doc>
- </method>
- <method name="get" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this IntWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a IntWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.IntWritable"/>
- <doc>
- <![CDATA[Compares two IntWritables.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A WritableComparable for ints.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.IntWritable -->
- <!-- start class org.apache.hadoop.io.IOUtils -->
- <class name="IOUtils" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="IOUtils"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="copyBytes"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="out" type="java.io.OutputStream"/>
- <param name="buffSize" type="int"/>
- <param name="close" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copies from one stream to another.
- @param in InputStrem to read from
- @param out OutputStream to write to
- @param buffSize the size of the buffer
- @param close whether or not close the InputStream and
- OutputStream at the end. The streams are closed in the finally clause.]]>
- </doc>
- </method>
- <method name="copyBytes"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="out" type="java.io.OutputStream"/>
- <param name="buffSize" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copies from one stream to another.
-
- @param in InputStrem to read from
- @param out OutputStream to write to
- @param buffSize the size of the buffer]]>
- </doc>
- </method>
- <method name="copyBytes"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="out" type="java.io.OutputStream"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copies from one stream to another. <strong>closes the input and output streams
- at the end</strong>.
- @param in InputStrem to read from
- @param out OutputStream to write to
- @param conf the Configuration object]]>
- </doc>
- </method>
- <method name="copyBytes"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="out" type="java.io.OutputStream"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="close" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copies from one stream to another.
- @param in InputStream to read from
- @param out OutputStream to write to
- @param conf the Configuration object
- @param close whether or not close the InputStream and
- OutputStream at the end. The streams are closed in the finally clause.]]>
- </doc>
- </method>
- <method name="copyBytes"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="out" type="java.io.OutputStream"/>
- <param name="count" type="long"/>
- <param name="close" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Copies count bytes from one stream to another.
- @param in InputStream to read from
- @param out OutputStream to write to
- @param count number of bytes to copy
- @param close whether to close the streams
- @throws IOException if bytes can not be read or written]]>
- </doc>
- </method>
- <method name="wrappedReadForCompressedData" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="is" type="java.io.InputStream"/>
- <param name="buf" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Utility wrapper for reading from {@link InputStream}. It catches any errors
- thrown by the underlying stream (either IO or decompression-related), and
- re-throws as an IOException.
-
- @param is - InputStream to be read from
- @param buf - buffer the data is read into
- @param off - offset within buf
- @param len - amount of data to be read
- @return number of bytes read]]>
- </doc>
- </method>
- <method name="readFully"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="buf" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads len bytes in a loop.
- @param in InputStream to read from
- @param buf The buffer to fill
- @param off offset from the buffer
- @param len the length of bytes to read
- @throws IOException if it could not read requested number of bytes
- for any reason (including EOF)]]>
- </doc>
- </method>
- <method name="skipFully"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="len" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Similar to readFully(). Skips bytes in a loop.
- @param in The InputStream to skip bytes from
- @param len number of bytes to skip.
- @throws IOException if it could not skip requested number of bytes
- for any reason (including EOF)]]>
- </doc>
- </method>
- <method name="cleanup"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="use {@link #cleanupWithLogger(Logger, java.io.Closeable...)}
- instead">
- <param name="log" type="org.apache.commons.logging.Log"/>
- <param name="closeables" type="java.io.Closeable[]"/>
- <doc>
- <![CDATA[Close the Closeable objects and <b>ignore</b> any {@link Throwable} or
- null pointers. Must only be used for cleanup in exception handlers.
- @param log the log to record problems to at debug level. Can be null.
- @param closeables the objects to close
- @deprecated use {@link #cleanupWithLogger(Logger, java.io.Closeable...)}
- instead]]>
- </doc>
- </method>
- <method name="cleanupWithLogger"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="logger" type="org.slf4j.Logger"/>
- <param name="closeables" type="java.io.Closeable[]"/>
- <doc>
- <![CDATA[Close the Closeable objects and <b>ignore</b> any {@link Throwable} or
- null pointers. Must only be used for cleanup in exception handlers.
- @param logger the log to record problems to at debug level. Can be null.
- @param closeables the objects to close]]>
- </doc>
- </method>
- <method name="closeStream"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.Closeable"/>
- <doc>
- <![CDATA[Closes the stream ignoring {@link Throwable}.
- Must only be called in cleaning up from exception handlers.
- @param stream the Stream to close]]>
- </doc>
- </method>
- <method name="closeStreams"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="streams" type="java.io.Closeable[]"/>
- <doc>
- <![CDATA[Closes the streams ignoring {@link Throwable}.
- Must only be called in cleaning up from exception handlers.
- @param streams the Streams to close]]>
- </doc>
- </method>
- <method name="closeSocket"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="sock" type="java.net.Socket"/>
- <doc>
- <![CDATA[Closes the socket ignoring {@link IOException}
- @param sock the Socket to close]]>
- </doc>
- </method>
- <method name="writeFully"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bc" type="java.nio.channels.WritableByteChannel"/>
- <param name="buf" type="java.nio.ByteBuffer"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a ByteBuffer to a WritableByteChannel, handling short writes.
-
- @param bc The WritableByteChannel to write to
- @param buf The input buffer
- @throws IOException On I/O error]]>
- </doc>
- </method>
- <method name="writeFully"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fc" type="java.nio.channels.FileChannel"/>
- <param name="buf" type="java.nio.ByteBuffer"/>
- <param name="offset" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a ByteBuffer to a FileChannel at a given offset,
- handling short writes.
-
- @param fc The FileChannel to write to
- @param buf The input buffer
- @param offset The offset in the file to start writing at
- @throws IOException On I/O error]]>
- </doc>
- </method>
- <method name="listDirectory" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <param name="filter" type="java.io.FilenameFilter"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the complete list of files in a directory as strings.<p/>
- This is better than File#listDir because it does not ignore IOExceptions.
- @param dir The directory to list.
- @param filter If non-null, the filter to use when listing
- this directory.
- @return The list of files in the directory.
- @throws IOException On I/O error]]>
- </doc>
- </method>
- <method name="fsync"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fileToSync" type="java.io.File"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Ensure that any writes to the given file is written to the storage device
- that contains it. This method opens channel on given File and closes it
- once the sync is done.<br>
- Borrowed from Uwe Schindler in LUCENE-5588
- @param fileToSync the file to fsync]]>
- </doc>
- </method>
- <method name="fsync"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="channel" type="java.nio.channels.FileChannel"/>
- <param name="isDir" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Ensure that any writes to the given file is written to the storage device
- that contains it. This method opens channel on given File and closes it
- once the sync is done.
- Borrowed from Uwe Schindler in LUCENE-5588
- @param channel Channel to sync
- @param isDir if true, the given file is a directory (Channel should be
- opened for read and ignore IOExceptions, because not all file
- systems and operating systems allow to fsync on a directory)
- @throws IOException]]>
- </doc>
- </method>
- <method name="readFullyToByteArray" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a DataInput until EOF and returns a byte array. Make sure not to
- pass in an infinite DataInput or this will never return.
- @param in A DataInput
- @return a byte array containing the data from the DataInput
- @throws IOException on I/O error, other than EOF]]>
- </doc>
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[An utility class for I/O related functionality.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.IOUtils -->
- <!-- start class org.apache.hadoop.io.LongWritable -->
- <class name="LongWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="LongWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="LongWritable" type="long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Set the value of this LongWritable.]]>
- </doc>
- </method>
- <method name="get" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this LongWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a LongWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.LongWritable"/>
- <doc>
- <![CDATA[Compares two LongWritables.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A WritableComparable for longs.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.LongWritable -->
- <!-- start class org.apache.hadoop.io.MapFile -->
- <class name="MapFile" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MapFile"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <method name="rename"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="oldName" type="java.lang.String"/>
- <param name="newName" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Renames an existing map directory.]]>
- </doc>
- </method>
- <method name="delete"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Deletes the named map file.]]>
- </doc>
- </method>
- <method name="fix" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="dir" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valueClass" type="java.lang.Class"/>
- <param name="dryrun" type="boolean"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[This method attempts to fix a corrupt MapFile by re-creating its index.
- @param fs filesystem
- @param dir directory containing the MapFile data and index
- @param keyClass key class (has to be a subclass of Writable)
- @param valueClass value class (has to be a subclass of Writable)
- @param dryrun do not perform any changes, just report what needs to be done
- @return number of valid entries in this MapFile, or -1 if no fixing was needed
- @throws Exception]]>
- </doc>
- </method>
- <method name="main"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- <exception name="Exception" type="java.lang.Exception"/>
- </method>
- <field name="INDEX_FILE_NAME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The name of the index file.]]>
- </doc>
- </field>
- <field name="DATA_FILE_NAME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The name of the data file.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[A file-based map from keys to values.
-
- <p>A map is a directory containing two files, the <code>data</code> file,
- containing all keys and values in the map, and a smaller <code>index</code>
- file, containing a fraction of the keys. The fraction is determined by
- {@link Writer#getIndexInterval()}.
- <p>The index file is read entirely into memory. Thus key implementations
- should try to keep themselves small.
- <p>Map files are created by adding entries in-order. To maintain a large
- database, perform updates by copying the previous version of a database and
- merging in a sorted change list, to create a new version of the database in
- a new file. Sorting large change lists can be done with {@link
- SequenceFile.Sorter}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.MapFile -->
- <!-- start class org.apache.hadoop.io.MapWritable -->
- <class name="MapWritable" extends="org.apache.hadoop.io.AbstractMapWritable"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.util.Map"/>
- <constructor name="MapWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default constructor.]]>
- </doc>
- </constructor>
- <constructor name="MapWritable" type="org.apache.hadoop.io.MapWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Copy constructor.
-
- @param other the map to copy from]]>
- </doc>
- </constructor>
- <method name="clear"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="containsKey" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.Object"/>
- </method>
- <method name="containsValue" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.lang.Object"/>
- </method>
- <method name="entrySet" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="java.lang.Object"/>
- </method>
- <method name="get" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isEmpty" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="keySet" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="put" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.io.Writable"/>
- <param name="value" type="org.apache.hadoop.io.Writable"/>
- </method>
- <method name="putAll"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="t" type="java.util.Map"/>
- </method>
- <method name="remove" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.Object"/>
- </method>
- <method name="size" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="values" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A Writable Map.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.MapWritable -->
- <!-- start class org.apache.hadoop.io.MD5Hash -->
- <class name="MD5Hash" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="MD5Hash"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs an MD5Hash.]]>
- </doc>
- </constructor>
- <constructor name="MD5Hash" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs an MD5Hash from a hex string.]]>
- </doc>
- </constructor>
- <constructor name="MD5Hash" type="byte[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs an MD5Hash with a specified value.]]>
- </doc>
- </constructor>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="read" return="org.apache.hadoop.io.MD5Hash"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Constructs, reads and returns an instance.]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="that" type="org.apache.hadoop.io.MD5Hash"/>
- <doc>
- <![CDATA[Copy the contents of another instance into this instance.]]>
- </doc>
- </method>
- <method name="getDigest" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the digest bytes.]]>
- </doc>
- </method>
- <method name="digest" return="org.apache.hadoop.io.MD5Hash"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="data" type="byte[]"/>
- <doc>
- <![CDATA[Construct a hash value for a byte array.]]>
- </doc>
- </method>
- <method name="getDigester" return="java.security.MessageDigest"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a thread local MD5 digester]]>
- </doc>
- </method>
- <method name="digest" return="org.apache.hadoop.io.MD5Hash"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct a hash value for the content from the InputStream.]]>
- </doc>
- </method>
- <method name="digest" return="org.apache.hadoop.io.MD5Hash"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="data" type="byte[]"/>
- <param name="start" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Construct a hash value for a byte array.]]>
- </doc>
- </method>
- <method name="digest" return="org.apache.hadoop.io.MD5Hash"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="string" type="java.lang.String"/>
- <doc>
- <![CDATA[Construct a hash value for a String.]]>
- </doc>
- </method>
- <method name="digest" return="org.apache.hadoop.io.MD5Hash"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="org.apache.hadoop.io.UTF8"/>
- <doc>
- <![CDATA[Construct a hash value for a String.]]>
- </doc>
- </method>
- <method name="halfDigest" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a half-sized version of this MD5. Fits in a long]]>
- </doc>
- </method>
- <method name="quarterDigest" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a 32-bit digest of the MD5.
- @return the first 4 bytes of the md5]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is an MD5Hash whose digest contains the
- same values.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a hash code value for this object.
- Only uses the first 4 bytes, since md5s are evenly distributed.]]>
- </doc>
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="that" type="org.apache.hadoop.io.MD5Hash"/>
- <doc>
- <![CDATA[Compares this object with the specified object for order.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a string representation of this object.]]>
- </doc>
- </method>
- <method name="setDigest"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="hex" type="java.lang.String"/>
- <doc>
- <![CDATA[Sets the digest value from a hex string.]]>
- </doc>
- </method>
- <field name="MD5_LEN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A Writable for MD5 hash values.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.MD5Hash -->
- <!-- start class org.apache.hadoop.io.MultipleIOException -->
- <class name="MultipleIOException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getExceptions" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the underlying exceptions]]>
- </doc>
- </method>
- <method name="createIOException" return="java.io.IOException"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="exceptions" type="java.util.List"/>
- <doc>
- <![CDATA[A convenient method to create an {@link IOException}.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Encapsulate a list of {@link IOException} into an {@link IOException}]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.MultipleIOException -->
- <!-- start class org.apache.hadoop.io.NullWritable -->
- <class name="NullWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <method name="get" return="org.apache.hadoop.io.NullWritable"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the single instance of this class.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="org.apache.hadoop.io.NullWritable"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="java.lang.Object"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Singleton Writable with no data.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.NullWritable -->
- <!-- start class org.apache.hadoop.io.ObjectWritable -->
- <class name="ObjectWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="ObjectWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ObjectWritable" type="java.lang.Object"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ObjectWritable" type="java.lang.Class, java.lang.Object"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="get" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the instance, or null if none.]]>
- </doc>
- </method>
- <method name="getDeclaredClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the class this is meant to be.]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="instance" type="java.lang.Object"/>
- <doc>
- <![CDATA[Reset the instance.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeObject"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="instance" type="java.lang.Object"/>
- <param name="declaredClass" type="java.lang.Class"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a {@link Writable}, {@link String}, primitive type, or an array of
- the preceding.]]>
- </doc>
- </method>
- <method name="writeObject"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="instance" type="java.lang.Object"/>
- <param name="declaredClass" type="java.lang.Class"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="allowCompactArrays" type="boolean"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a {@link Writable}, {@link String}, primitive type, or an array of
- the preceding.
-
- @param allowCompactArrays - set true for RPC and internal or intra-cluster
- usages. Set false for inter-cluster, File, and other persisted output
- usages, to preserve the ability to interchange files with other clusters
- that may not be running the same version of software. Sometime in ~2013
- we can consider removing this parameter and always using the compact format.]]>
- </doc>
- </method>
- <method name="readObject" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a {@link Writable}, {@link String}, primitive type, or an array of
- the preceding.]]>
- </doc>
- </method>
- <method name="readObject" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="objectWritable" type="org.apache.hadoop.io.ObjectWritable"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a {@link Writable}, {@link String}, primitive type, or an array of
- the preceding.]]>
- </doc>
- </method>
- <method name="loadClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="className" type="java.lang.String"/>
- <doc>
- <![CDATA[Find and load the class with given name <tt>className</tt> by first finding
- it in the specified <tt>conf</tt>. If the specified <tt>conf</tt> is null,
- try load it directly.]]>
- </doc>
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A polymorphic Writable that writes an instance with it's class name.
- Handles arrays, strings and primitive types without a Writable wrapper.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.ObjectWritable -->
- <!-- start interface org.apache.hadoop.io.RawComparator -->
- <interface name="RawComparator" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.util.Comparator"/>
- <method name="compare" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b1" type="byte[]"/>
- <param name="s1" type="int"/>
- <param name="l1" type="int"/>
- <param name="b2" type="byte[]"/>
- <param name="s2" type="int"/>
- <param name="l2" type="int"/>
- <doc>
- <![CDATA[Compare two objects in binary.
- b1[s1:l1] is the first object, and b2[s2:l2] is the second object.
-
- @param b1 The first byte array.
- @param s1 The position index in b1. The object under comparison's starting index.
- @param l1 The length of the object in b1.
- @param b2 The second byte array.
- @param s2 The position index in b2. The object under comparison's starting index.
- @param l2 The length of the object under comparison in b2.
- @return An integer result of the comparison.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[<p>
- A {@link Comparator} that operates directly on byte representations of
- objects.
- </p>
- @param <T>
- @see DeserializerComparator]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.RawComparator -->
- <!-- start class org.apache.hadoop.io.SequenceFile -->
- <class name="SequenceFile" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getDefaultCompressionType" return="org.apache.hadoop.io.SequenceFile.CompressionType"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="job" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Get the compression type for the reduce outputs
- @param job the job config to look in
- @return the kind of compression to use]]>
- </doc>
- </method>
- <method name="setDefaultCompressionType"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="job" type="org.apache.hadoop.conf.Configuration"/>
- <param name="val" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <doc>
- <![CDATA[Set the default compression type for sequence files.
- @param job the configuration to modify
- @param val the new compression type (none, block, record)]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="opts" type="org.apache.hadoop.io.SequenceFile.Writer.Option[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a new Writer with the given options.
- @param conf the configuration to use
- @param opts the options to create the file with
- @return a new Writer
- @throws IOException]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @param progress The Progressable object to track progress.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @param codec The compression codec.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="metadata" type="org.apache.hadoop.io.SequenceFile.Metadata"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @param codec The compression codec.
- @param progress The Progressable object to track progress.
- @param metadata The metadata of the file.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <param name="metadata" type="org.apache.hadoop.io.SequenceFile.Metadata"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param bufferSize buffer size for the underlaying outputstream.
- @param replication replication factor for the file.
- @param blockSize block size for the file.
- @param compressionType The compression type.
- @param codec The compression codec.
- @param progress The Progressable object to track progress.
- @param metadata The metadata of the file.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="bufferSize" type="int"/>
- <param name="replication" type="short"/>
- <param name="blockSize" type="long"/>
- <param name="createParent" type="boolean"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <param name="metadata" type="org.apache.hadoop.io.SequenceFile.Metadata"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param bufferSize buffer size for the underlaying outputstream.
- @param replication replication factor for the file.
- @param blockSize block size for the file.
- @param createParent create parent directory if non-existent
- @param compressionType The compression type.
- @param codec The compression codec.
- @param metadata The metadata of the file.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fc" type="org.apache.hadoop.fs.FileContext"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <param name="metadata" type="org.apache.hadoop.io.SequenceFile.Metadata"/>
- <param name="createFlag" type="java.util.EnumSet"/>
- <param name="opts" type="org.apache.hadoop.fs.Options.CreateOpts[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fc The context for the specified file.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @param codec The compression codec.
- @param metadata The metadata of the file.
- @param createFlag gives the semantics of create: overwrite, append etc.
- @param opts file creation options; see {@link CreateOpts}.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="fs" type="org.apache.hadoop.fs.FileSystem"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="name" type="org.apache.hadoop.fs.Path"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <param name="progress" type="org.apache.hadoop.util.Progressable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of SequenceFile Writer.
- @param fs The configured filesystem.
- @param conf The configuration.
- @param name The name of the file.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @param codec The compression codec.
- @param progress The Progressable object to track progress.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="out" type="org.apache.hadoop.fs.FSDataOutputStream"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <param name="metadata" type="org.apache.hadoop.io.SequenceFile.Metadata"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of 'raw' SequenceFile Writer.
- @param conf The configuration.
- @param out The stream on top which the writer is to be constructed.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @param codec The compression codec.
- @param metadata The metadata of the file.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <method name="createWriter" return="org.apache.hadoop.io.SequenceFile.Writer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="out" type="org.apache.hadoop.fs.FSDataOutputStream"/>
- <param name="keyClass" type="java.lang.Class"/>
- <param name="valClass" type="java.lang.Class"/>
- <param name="compressionType" type="org.apache.hadoop.io.SequenceFile.CompressionType"/>
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Construct the preferred type of 'raw' SequenceFile Writer.
- @param conf The configuration.
- @param out The stream on top which the writer is to be constructed.
- @param keyClass The 'key' type.
- @param valClass The 'value' type.
- @param compressionType The compression type.
- @param codec The compression codec.
- @return Returns the handle to the constructed SequenceFile Writer.
- @throws IOException
- @deprecated Use {@link #createWriter(Configuration, Writer.Option...)}
- instead.]]>
- </doc>
- </method>
- <field name="SYNC_INTERVAL" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The number of bytes between sync points.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[<code>SequenceFile</code>s are flat files consisting of binary key/value
- pairs.
-
- <p><code>SequenceFile</code> provides {@link SequenceFile.Writer},
- {@link SequenceFile.Reader} and {@link Sorter} classes for writing,
- reading and sorting respectively.</p>
-
- There are three <code>SequenceFile</code> <code>Writer</code>s based on the
- {@link CompressionType} used to compress key/value pairs:
- <ol>
- <li>
- <code>Writer</code> : Uncompressed records.
- </li>
- <li>
- <code>RecordCompressWriter</code> : Record-compressed files, only compress
- values.
- </li>
- <li>
- <code>BlockCompressWriter</code> : Block-compressed files, both keys &
- values are collected in 'blocks'
- separately and compressed. The size of
- the 'block' is configurable.
- </ol>
-
- <p>The actual compression algorithm used to compress key and/or values can be
- specified by using the appropriate {@link CompressionCodec}.</p>
-
- <p>The recommended way is to use the static <tt>createWriter</tt> methods
- provided by the <code>SequenceFile</code> to chose the preferred format.</p>
- <p>The {@link SequenceFile.Reader} acts as the bridge and can read any of the
- above <code>SequenceFile</code> formats.</p>
- <h4 id="Formats">SequenceFile Formats</h4>
-
- <p>Essentially there are 3 different formats for <code>SequenceFile</code>s
- depending on the <code>CompressionType</code> specified. All of them share a
- <a href="#Header">common header</a> described below.
-
- <h5 id="Header">SequenceFile Header</h5>
- <ul>
- <li>
- version - 3 bytes of magic header <b>SEQ</b>, followed by 1 byte of actual
- version number (e.g. SEQ4 or SEQ6)
- </li>
- <li>
- keyClassName -key class
- </li>
- <li>
- valueClassName - value class
- </li>
- <li>
- compression - A boolean which specifies if compression is turned on for
- keys/values in this file.
- </li>
- <li>
- blockCompression - A boolean which specifies if block-compression is
- turned on for keys/values in this file.
- </li>
- <li>
- compression codec - <code>CompressionCodec</code> class which is used for
- compression of keys and/or values (if compression is
- enabled).
- </li>
- <li>
- metadata - {@link Metadata} for this file.
- </li>
- <li>
- sync - A sync marker to denote end of the header.
- </li>
- </ul>
-
- <h5 id="#UncompressedFormat">Uncompressed SequenceFile Format</h5>
- <ul>
- <li>
- <a href="#Header">Header</a>
- </li>
- <li>
- Record
- <ul>
- <li>Record length</li>
- <li>Key length</li>
- <li>Key</li>
- <li>Value</li>
- </ul>
- </li>
- <li>
- A sync-marker every few <code>100</code> bytes or so.
- </li>
- </ul>
- <h5 id="#RecordCompressedFormat">Record-Compressed SequenceFile Format</h5>
- <ul>
- <li>
- <a href="#Header">Header</a>
- </li>
- <li>
- Record
- <ul>
- <li>Record length</li>
- <li>Key length</li>
- <li>Key</li>
- <li><i>Compressed</i> Value</li>
- </ul>
- </li>
- <li>
- A sync-marker every few <code>100</code> bytes or so.
- </li>
- </ul>
-
- <h5 id="#BlockCompressedFormat">Block-Compressed SequenceFile Format</h5>
- <ul>
- <li>
- <a href="#Header">Header</a>
- </li>
- <li>
- Record <i>Block</i>
- <ul>
- <li>Uncompressed number of records in the block</li>
- <li>Compressed key-lengths block-size</li>
- <li>Compressed key-lengths block</li>
- <li>Compressed keys block-size</li>
- <li>Compressed keys block</li>
- <li>Compressed value-lengths block-size</li>
- <li>Compressed value-lengths block</li>
- <li>Compressed values block-size</li>
- <li>Compressed values block</li>
- </ul>
- </li>
- <li>
- A sync-marker every block.
- </li>
- </ul>
-
- <p>The compressed blocks of key lengths and value lengths consist of the
- actual lengths of individual keys/values encoded in ZeroCompressedInteger
- format.</p>
-
- @see CompressionCodec]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.SequenceFile -->
- <!-- start class org.apache.hadoop.io.SetFile -->
- <class name="SetFile" extends="org.apache.hadoop.io.MapFile"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="SetFile"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[A file-based set of keys.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.SetFile -->
- <!-- start class org.apache.hadoop.io.ShortWritable -->
- <class name="ShortWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="ShortWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ShortWritable" type="short"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="short"/>
- <doc>
- <![CDATA[Set the value of this ShortWritable.]]>
- </doc>
- </method>
- <method name="get" return="short"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this ShortWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[read the short value]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[write short value]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a ShortWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[hash code]]>
- </doc>
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.ShortWritable"/>
- <doc>
- <![CDATA[Compares two ShortWritable.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Short values in string format]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A WritableComparable for shorts.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.ShortWritable -->
- <!-- start class org.apache.hadoop.io.SortedMapWritable -->
- <class name="SortedMapWritable" extends="org.apache.hadoop.io.AbstractMapWritable"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.util.SortedMap"/>
- <constructor name="SortedMapWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[default constructor.]]>
- </doc>
- </constructor>
- <constructor name="SortedMapWritable" type="org.apache.hadoop.io.SortedMapWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Copy constructor.
-
- @param other the map to copy from]]>
- </doc>
- </constructor>
- <method name="comparator" return="java.util.Comparator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="firstKey" return="org.apache.hadoop.io.WritableComparable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="headMap" return="java.util.SortedMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="toKey" type="org.apache.hadoop.io.WritableComparable"/>
- </method>
- <method name="lastKey" return="org.apache.hadoop.io.WritableComparable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="subMap" return="java.util.SortedMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fromKey" type="org.apache.hadoop.io.WritableComparable"/>
- <param name="toKey" type="org.apache.hadoop.io.WritableComparable"/>
- </method>
- <method name="tailMap" return="java.util.SortedMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fromKey" type="org.apache.hadoop.io.WritableComparable"/>
- </method>
- <method name="clear"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="containsKey" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.Object"/>
- </method>
- <method name="containsValue" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.lang.Object"/>
- </method>
- <method name="entrySet" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="get" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.Object"/>
- </method>
- <method name="isEmpty" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="keySet" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="put" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.io.WritableComparable"/>
- <param name="value" type="org.apache.hadoop.io.Writable"/>
- </method>
- <method name="putAll"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="t" type="java.util.Map"/>
- </method>
- <method name="remove" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.Object"/>
- </method>
- <method name="size" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="values" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A Writable SortedMap.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.SortedMapWritable -->
- <!-- start interface org.apache.hadoop.io.Stringifier -->
- <interface name="Stringifier" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.io.Closeable"/>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="T"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Converts the object to a string representation
- @param obj the object to convert
- @return the string representation of the object
- @throws IOException if the object cannot be converted]]>
- </doc>
- </method>
- <method name="fromString" return="T"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="str" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Restores the object from its string representation.
- @param str the string representation of the object
- @return restored object
- @throws IOException if the object cannot be restored]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Closes this object.
- @throws IOException if an I/O error occurs]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Stringifier interface offers two methods to convert an object
- to a string representation and restore the object given its
- string representation.
- @param <T> the class of the objects to stringify]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.Stringifier -->
- <!-- start class org.apache.hadoop.io.Text -->
- <class name="Text" extends="org.apache.hadoop.io.BinaryComparable"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="Text"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="Text" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct from a string.]]>
- </doc>
- </constructor>
- <constructor name="Text" type="org.apache.hadoop.io.Text"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct from another text.]]>
- </doc>
- </constructor>
- <constructor name="Text" type="byte[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct from a byte array.]]>
- </doc>
- </constructor>
- <method name="copyBytes" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get a copy of the bytes that is exactly the length of the data.
- See {@link #getBytes()} for faster access to the underlying array.]]>
- </doc>
- </method>
- <method name="getBytes" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the raw bytes; however, only data up to {@link #getLength()} is
- valid. Please use {@link #copyBytes()} if you
- need the returned array to be precisely the length of the data.]]>
- </doc>
- </method>
- <method name="getLength" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the number of bytes in the byte array]]>
- </doc>
- </method>
- <method name="charAt" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="position" type="int"/>
- <doc>
- <![CDATA[Returns the Unicode Scalar Value (32-bit integer value)
- for the character at <code>position</code>. Note that this
- method avoids using the converter or doing String instantiation
- @return the Unicode scalar value at position or -1
- if the position is invalid or points to a
- trailing byte]]>
- </doc>
- </method>
- <method name="find" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="what" type="java.lang.String"/>
- </method>
- <method name="find" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="what" type="java.lang.String"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Finds any occurence of <code>what</code> in the backing
- buffer, starting as position <code>start</code>. The starting
- position is measured in bytes and the return value is in
- terms of byte position in the buffer. The backing buffer is
- not converted to a string for this operation.
- @return byte position of the first occurence of the search
- string in the UTF-8 buffer or -1 if not found]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="string" type="java.lang.String"/>
- <doc>
- <![CDATA[Set to contain the contents of a string.]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <doc>
- <![CDATA[Set to a utf8 byte array]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[copy a text.]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <param name="start" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Set the Text to range of bytes
- @param utf8 the data to copy from
- @param start the first position of the new string
- @param len the number of bytes of the new string]]>
- </doc>
- </method>
- <method name="append"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <param name="start" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Append a range of bytes to the end of the given text
- @param utf8 the data to copy from
- @param start the first position to append from utf8
- @param len the number of bytes to append]]>
- </doc>
- </method>
- <method name="clear"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Clear the string to empty.
- <em>Note</em>: For performance reasons, this call does not clear the
- underlying byte array that is retrievable via {@link #getBytes()}.
- In order to free the byte-array memory, call {@link #set(byte[])}
- with an empty byte array (For example, <code>new byte[0]</code>).]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Convert text back to string
- @see java.lang.Object#toString()]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[deserialize]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="maxLength" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="skip"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Skips over one Text in the input.]]>
- </doc>
- </method>
- <method name="readWithKnownLength"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a Text object whose length is already known.
- This allows creating Text from a stream which uses a different serialization
- format.]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[serialize
- write this object to out
- length uses zero-compressed encoding
- @see Writable#write(DataOutput)]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="maxLength" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a Text with the same contents.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="decode" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <exception name="CharacterCodingException" type="java.nio.charset.CharacterCodingException"/>
- <doc>
- <![CDATA[Converts the provided byte array to a String using the
- UTF-8 encoding. If the input is malformed,
- replace by a default value.]]>
- </doc>
- </method>
- <method name="decode" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <param name="start" type="int"/>
- <param name="length" type="int"/>
- <exception name="CharacterCodingException" type="java.nio.charset.CharacterCodingException"/>
- </method>
- <method name="decode" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <param name="start" type="int"/>
- <param name="length" type="int"/>
- <param name="replace" type="boolean"/>
- <exception name="CharacterCodingException" type="java.nio.charset.CharacterCodingException"/>
- <doc>
- <![CDATA[Converts the provided byte array to a String using the
- UTF-8 encoding. If <code>replace</code> is true, then
- malformed input is replaced with the
- substitution character, which is U+FFFD. Otherwise the
- method throws a MalformedInputException.]]>
- </doc>
- </method>
- <method name="encode" return="java.nio.ByteBuffer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="string" type="java.lang.String"/>
- <exception name="CharacterCodingException" type="java.nio.charset.CharacterCodingException"/>
- <doc>
- <![CDATA[Converts the provided String to bytes using the
- UTF-8 encoding. If the input is malformed,
- invalid chars are replaced by a default value.
- @return ByteBuffer: bytes stores at ByteBuffer.array()
- and length is ByteBuffer.limit()]]>
- </doc>
- </method>
- <method name="encode" return="java.nio.ByteBuffer"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="string" type="java.lang.String"/>
- <param name="replace" type="boolean"/>
- <exception name="CharacterCodingException" type="java.nio.charset.CharacterCodingException"/>
- <doc>
- <![CDATA[Converts the provided String to bytes using the
- UTF-8 encoding. If <code>replace</code> is true, then
- malformed input is replaced with the
- substitution character, which is U+FFFD. Otherwise the
- method throws a MalformedInputException.
- @return ByteBuffer: bytes stores at ByteBuffer.array()
- and length is ByteBuffer.limit()]]>
- </doc>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a UTF8 encoded string from in]]>
- </doc>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="maxLength" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a UTF8 encoded string with a maximum size]]>
- </doc>
- </method>
- <method name="writeString" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="s" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a UTF8 encoded string to out]]>
- </doc>
- </method>
- <method name="writeString" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="s" type="java.lang.String"/>
- <param name="maxLength" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a UTF8 encoded string with a maximum size to out]]>
- </doc>
- </method>
- <method name="validateUTF8"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <exception name="MalformedInputException" type="java.nio.charset.MalformedInputException"/>
- <doc>
- <![CDATA[Check if a byte array contains valid utf-8
- @param utf8 byte array
- @throws MalformedInputException if the byte array contains invalid utf-8]]>
- </doc>
- </method>
- <method name="validateUTF8"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="utf8" type="byte[]"/>
- <param name="start" type="int"/>
- <param name="len" type="int"/>
- <exception name="MalformedInputException" type="java.nio.charset.MalformedInputException"/>
- <doc>
- <![CDATA[Check to see if a byte array is valid utf-8
- @param utf8 the array of bytes
- @param start the offset of the first byte in the array
- @param len the length of the byte sequence
- @throws MalformedInputException if the byte array contains invalid bytes]]>
- </doc>
- </method>
- <method name="bytesToCodePoint" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="java.nio.ByteBuffer"/>
- <doc>
- <![CDATA[Returns the next code point at the current position in
- the buffer. The buffer's position will be incremented.
- Any mark set on this buffer will be changed by this method!]]>
- </doc>
- </method>
- <method name="utf8Length" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="string" type="java.lang.String"/>
- <doc>
- <![CDATA[For the given string, returns the number of UTF-8 bytes
- required to encode the string.
- @param string text to encode
- @return number of UTF-8 bytes required to encode]]>
- </doc>
- </method>
- <field name="DEFAULT_MAX_LEN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[This class stores text using standard UTF8 encoding. It provides methods
- to serialize, deserialize, and compare texts at byte level. The type of
- length is integer and is serialized using zero-compressed format. <p>In
- addition, it provides methods for string traversal without converting the
- byte array to a string. <p>Also includes utilities for
- serializing/deserialing a string, coding/decoding a string, checking if a
- byte array contains valid UTF8 code, calculating the length of an encoded
- string.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.Text -->
- <!-- start class org.apache.hadoop.io.TwoDArrayWritable -->
- <class name="TwoDArrayWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="TwoDArrayWritable" type="java.lang.Class"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="TwoDArrayWritable" type="java.lang.Class, org.apache.hadoop.io.Writable[][]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="toArray" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="values" type="org.apache.hadoop.io.Writable[][]"/>
- </method>
- <method name="get" return="org.apache.hadoop.io.Writable[][]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A Writable for 2D arrays containing a matrix of instances of a class.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.TwoDArrayWritable -->
- <!-- start class org.apache.hadoop.io.VersionedWritable -->
- <class name="VersionedWritable" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="VersionedWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getVersion" return="byte"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the version number of the current implementation.]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A base class for Writables that provides version checking.
- <p>This is useful when a class may evolve, so that instances written by the
- old version of the class may still be processed by the new version. To
- handle this situation, {@link #readFields(DataInput)}
- implementations should catch {@link VersionMismatchException}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.VersionedWritable -->
- <!-- start class org.apache.hadoop.io.VersionMismatchException -->
- <class name="VersionMismatchException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="VersionMismatchException" type="byte, byte"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a string representation of this object.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Thrown by {@link VersionedWritable#readFields(DataInput)} when the
- version of an object being read does not match the current implementation
- version as returned by {@link VersionedWritable#getVersion()}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.VersionMismatchException -->
- <!-- start class org.apache.hadoop.io.VIntWritable -->
- <class name="VIntWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="VIntWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="VIntWritable" type="int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Set the value of this VIntWritable.]]>
- </doc>
- </method>
- <method name="get" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this VIntWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a VIntWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.VIntWritable"/>
- <doc>
- <![CDATA[Compares two VIntWritables.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A WritableComparable for integer values stored in variable-length format.
- Such values take between one and five bytes. Smaller values take fewer bytes.
-
- @see org.apache.hadoop.io.WritableUtils#readVInt(DataInput)]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.VIntWritable -->
- <!-- start class org.apache.hadoop.io.VLongWritable -->
- <class name="VLongWritable" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <constructor name="VLongWritable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="VLongWritable" type="long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Set the value of this LongWritable.]]>
- </doc>
- </method>
- <method name="get" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the value of this LongWritable.]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Returns true iff <code>o</code> is a VLongWritable with the same value.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="org.apache.hadoop.io.VLongWritable"/>
- <doc>
- <![CDATA[Compares two VLongWritables.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A WritableComparable for longs in a variable-length format. Such values take
- between one and five bytes. Smaller values take fewer bytes.
-
- @see org.apache.hadoop.io.WritableUtils#readVLong(DataInput)]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.VLongWritable -->
- <!-- start interface org.apache.hadoop.io.Writable -->
- <interface name="Writable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serialize the fields of this object to <code>out</code>.
-
- @param out <code>DataOuput</code> to serialize this object into.
- @throws IOException]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Deserialize the fields of this object from <code>in</code>.
-
- <p>For efficiency, implementations should attempt to re-use storage in the
- existing object where possible.</p>
-
- @param in <code>DataInput</code> to deseriablize this object from.
- @throws IOException]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A serializable object which implements a simple, efficient, serialization
- protocol, based on {@link DataInput} and {@link DataOutput}.
- <p>Any <code>key</code> or <code>value</code> type in the Hadoop Map-Reduce
- framework implements this interface.</p>
-
- <p>Implementations typically implement a static <code>read(DataInput)</code>
- method which constructs a new instance, calls {@link #readFields(DataInput)}
- and returns the instance.</p>
-
- <p>Example:</p>
- <p><blockquote><pre>
- public class MyWritable implements Writable {
- // Some data
- private int counter;
- private long timestamp;
-
- public void write(DataOutput out) throws IOException {
- out.writeInt(counter);
- out.writeLong(timestamp);
- }
-
- public void readFields(DataInput in) throws IOException {
- counter = in.readInt();
- timestamp = in.readLong();
- }
-
- public static MyWritable read(DataInput in) throws IOException {
- MyWritable w = new MyWritable();
- w.readFields(in);
- return w;
- }
- }
- </pre></blockquote></p>]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.Writable -->
- <!-- start interface org.apache.hadoop.io.WritableComparable -->
- <interface name="WritableComparable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <implements name="java.lang.Comparable"/>
- <doc>
- <![CDATA[A {@link Writable} which is also {@link Comparable}.
- <p><code>WritableComparable</code>s can be compared to each other, typically
- via <code>Comparator</code>s. Any type which is to be used as a
- <code>key</code> in the Hadoop Map-Reduce framework should implement this
- interface.</p>
- <p>Note that <code>hashCode()</code> is frequently used in Hadoop to partition
- keys. It's important that your implementation of hashCode() returns the same
- result across different instances of the JVM. Note also that the default
- <code>hashCode()</code> implementation in <code>Object</code> does <b>not</b>
- satisfy this property.</p>
-
- <p>Example:</p>
- <p><blockquote><pre>
- public class MyWritableComparable implements WritableComparable<MyWritableComparable> {
- // Some data
- private int counter;
- private long timestamp;
-
- public void write(DataOutput out) throws IOException {
- out.writeInt(counter);
- out.writeLong(timestamp);
- }
-
- public void readFields(DataInput in) throws IOException {
- counter = in.readInt();
- timestamp = in.readLong();
- }
-
- public int compareTo(MyWritableComparable o) {
- int thisValue = this.value;
- int thatValue = o.value;
- return (thisValue < thatValue ? -1 : (thisValue==thatValue ? 0 : 1));
- }
- public int hashCode() {
- final int prime = 31;
- int result = 1;
- result = prime * result + counter;
- result = prime * result + (int) (timestamp ^ (timestamp >>> 32));
- return result
- }
- }
- </pre></blockquote></p>]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.WritableComparable -->
- <!-- start class org.apache.hadoop.io.WritableComparator -->
- <class name="WritableComparator" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.RawComparator"/>
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="WritableComparator"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <constructor name="WritableComparator" type="java.lang.Class"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct for a {@link WritableComparable} implementation.]]>
- </doc>
- </constructor>
- <constructor name="WritableComparator" type="java.lang.Class, boolean"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <constructor name="WritableComparator" type="java.lang.Class, org.apache.hadoop.conf.Configuration, boolean"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <method name="get" return="org.apache.hadoop.io.WritableComparator"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <doc>
- <![CDATA[For backwards compatibility.]]>
- </doc>
- </method>
- <method name="get" return="org.apache.hadoop.io.WritableComparator"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Get a comparator for a {@link WritableComparable} implementation.]]>
- </doc>
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="define"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <param name="comparator" type="org.apache.hadoop.io.WritableComparator"/>
- <doc>
- <![CDATA[Register an optimized comparator for a {@link WritableComparable}
- implementation. Comparators registered with this method must be
- thread-safe.]]>
- </doc>
- </method>
- <method name="getKeyClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the WritableComparable implementation class.]]>
- </doc>
- </method>
- <method name="newKey" return="org.apache.hadoop.io.WritableComparable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a new {@link WritableComparable} instance.]]>
- </doc>
- </method>
- <method name="compare" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b1" type="byte[]"/>
- <param name="s1" type="int"/>
- <param name="l1" type="int"/>
- <param name="b2" type="byte[]"/>
- <param name="s2" type="int"/>
- <param name="l2" type="int"/>
- <doc>
- <![CDATA[Optimization hook. Override this to make SequenceFile.Sorter's scream.
- <p>The default implementation reads the data into two {@link
- WritableComparable}s (using {@link
- Writable#readFields(DataInput)}, then calls {@link
- #compare(WritableComparable,WritableComparable)}.]]>
- </doc>
- </method>
- <method name="compare" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="a" type="org.apache.hadoop.io.WritableComparable"/>
- <param name="b" type="org.apache.hadoop.io.WritableComparable"/>
- <doc>
- <![CDATA[Compare two WritableComparables.
- <p> The default implementation uses the natural ordering, calling {@link
- Comparable#compareTo(Object)}.]]>
- </doc>
- </method>
- <method name="compare" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="a" type="java.lang.Object"/>
- <param name="b" type="java.lang.Object"/>
- </method>
- <method name="compareBytes" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b1" type="byte[]"/>
- <param name="s1" type="int"/>
- <param name="l1" type="int"/>
- <param name="b2" type="byte[]"/>
- <param name="s2" type="int"/>
- <param name="l2" type="int"/>
- <doc>
- <![CDATA[Lexicographic order of binary data.]]>
- </doc>
- </method>
- <method name="hashBytes" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <doc>
- <![CDATA[Compute hash for binary data.]]>
- </doc>
- </method>
- <method name="hashBytes" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="length" type="int"/>
- <doc>
- <![CDATA[Compute hash for binary data.]]>
- </doc>
- </method>
- <method name="readUnsignedShort" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Parse an unsigned short from a byte array.]]>
- </doc>
- </method>
- <method name="readInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Parse an integer from a byte array.]]>
- </doc>
- </method>
- <method name="readFloat" return="float"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Parse a float from a byte array.]]>
- </doc>
- </method>
- <method name="readLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Parse a long from a byte array.]]>
- </doc>
- </method>
- <method name="readDouble" return="double"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Parse a double from a byte array.]]>
- </doc>
- </method>
- <method name="readVLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded long from a byte array and returns it.
- @param bytes byte array with decode long
- @param start starting index
- @throws java.io.IOException
- @return deserialized long]]>
- </doc>
- </method>
- <method name="readVInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded integer from a byte array and returns it.
- @param bytes byte array with the encoded integer
- @param start start index
- @throws java.io.IOException
- @return deserialized integer]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A Comparator for {@link WritableComparable}s.
- <p>This base implemenation uses the natural ordering. To define alternate
- orderings, override {@link #compare(WritableComparable,WritableComparable)}.
- <p>One may optimize compare-intensive operations by overriding
- {@link #compare(byte[],int,int,byte[],int,int)}. Static utility methods are
- provided to assist in optimized implementations of this method.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.WritableComparator -->
- <!-- start class org.apache.hadoop.io.WritableFactories -->
- <class name="WritableFactories" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="setFactory"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <param name="factory" type="org.apache.hadoop.io.WritableFactory"/>
- <doc>
- <![CDATA[Define a factory for a class.]]>
- </doc>
- </method>
- <method name="getFactory" return="org.apache.hadoop.io.WritableFactory"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <doc>
- <![CDATA[Define a factory for a class.]]>
- </doc>
- </method>
- <method name="newInstance" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Create a new instance of a class with a defined factory.]]>
- </doc>
- </method>
- <method name="newInstance" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <doc>
- <![CDATA[Create a new instance of a class with a defined factory.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Factories for non-public writables. Defining a factory permits {@link
- ObjectWritable} to be able to construct instances of non-public classes.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.WritableFactories -->
- <!-- start interface org.apache.hadoop.io.WritableFactory -->
- <interface name="WritableFactory" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="newInstance" return="org.apache.hadoop.io.Writable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a new instance.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A factory for a class of Writable.
- @see WritableFactories]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.WritableFactory -->
- <!-- start class org.apache.hadoop.io.WritableUtils -->
- <class name="WritableUtils" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <constructor name="WritableUtils"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="readCompressedByteArray" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="skipCompressedByteArray"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeCompressedByteArray" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="bytes" type="byte[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readCompressedString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeCompressedString" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="s" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeString"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="s" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeStringArray"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="s" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeCompressedStringArray"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="s" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readStringArray" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readCompressedStringArray" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="displayByteArray"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="record" type="byte[]"/>
- </method>
- <method name="clone" return="T"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="orig" type="T"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Make a copy of a writable object using serialization to a buffer.
- @param orig The object to copy
- @return The copied object]]>
- </doc>
- </method>
- <method name="cloneInto"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="use ReflectionUtils.cloneInto instead.">
- <param name="dst" type="org.apache.hadoop.io.Writable"/>
- <param name="src" type="org.apache.hadoop.io.Writable"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Make a copy of the writable object using serialiation to a buffer
- @param dst the object to copy from
- @param src the object to copy into, which is destroyed
- @throws IOException
- @deprecated use ReflectionUtils.cloneInto instead.]]>
- </doc>
- </method>
- <method name="writeVInt"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.DataOutput"/>
- <param name="i" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serializes an integer to a binary stream with zero-compressed encoding.
- For -112 <= i <= 127, only one byte is used with the actual value.
- For other values of i, the first byte value indicates whether the
- integer is positive or negative, and the number of bytes that follow.
- If the first byte value v is between -113 and -116, the following integer
- is positive, with number of bytes that follow are -(v+112).
- If the first byte value v is between -121 and -124, the following integer
- is negative, with number of bytes that follow are -(v+120). Bytes are
- stored in the high-non-zero-byte-first order.
- @param stream Binary output stream
- @param i Integer to be serialized
- @throws java.io.IOException]]>
- </doc>
- </method>
- <method name="writeVLong"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.DataOutput"/>
- <param name="i" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serializes a long to a binary stream with zero-compressed encoding.
- For -112 <= i <= 127, only one byte is used with the actual value.
- For other values of i, the first byte value indicates whether the
- long is positive or negative, and the number of bytes that follow.
- If the first byte value v is between -113 and -120, the following long
- is positive, with number of bytes that follow are -(v+112).
- If the first byte value v is between -121 and -128, the following long
- is negative, with number of bytes that follow are -(v+120). Bytes are
- stored in the high-non-zero-byte-first order.
-
- @param stream Binary output stream
- @param i Long to be serialized
- @throws java.io.IOException]]>
- </doc>
- </method>
- <method name="readVLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded long from input stream and returns it.
- @param stream Binary input stream
- @throws java.io.IOException
- @return deserialized long from stream.]]>
- </doc>
- </method>
- <method name="readVInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded integer from input stream and returns it.
- @param stream Binary input stream
- @throws java.io.IOException
- @return deserialized integer from stream.]]>
- </doc>
- </method>
- <method name="readVIntInRange" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.DataInput"/>
- <param name="lower" type="int"/>
- <param name="upper" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads an integer from the input stream and returns it.
- This function validates that the integer is between [lower, upper],
- inclusive.
- @param stream Binary input stream
- @throws java.io.IOException
- @return deserialized integer from stream]]>
- </doc>
- </method>
- <method name="isNegativeVInt" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="byte"/>
- <doc>
- <![CDATA[Given the first byte of a vint/vlong, determine the sign
- @param value the first byte
- @return is the value negative]]>
- </doc>
- </method>
- <method name="decodeVIntSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="byte"/>
- <doc>
- <![CDATA[Parse the first byte of a vint/vlong to determine the number of bytes
- @param value the first byte of the vint/vlong
- @return the total number of bytes (1 to 9)]]>
- </doc>
- </method>
- <method name="getVIntSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="i" type="long"/>
- <doc>
- <![CDATA[Get the encoded length if an integer is stored in a variable-length format
- @return the encoded length]]>
- </doc>
- </method>
- <method name="readEnum" return="T"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="enumType" type="java.lang.Class"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read an Enum value from DataInput, Enums are read and written
- using String values.
- @param <T> Enum type
- @param in DataInput to read from
- @param enumType Class type of Enum
- @return Enum represented by String read from DataInput
- @throws IOException]]>
- </doc>
- </method>
- <method name="writeEnum"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="enumVal" type="java.lang.Enum"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[writes String value of enum to DataOutput.
- @param out Dataoutput stream
- @param enumVal enum value
- @throws IOException]]>
- </doc>
- </method>
- <method name="skipFully"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Skip <i>len</i> number of bytes in input stream<i>in</i>
- @param in input stream
- @param len number of bytes to skip
- @throws IOException when skipped less number of bytes]]>
- </doc>
- </method>
- <method name="toByteArray" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="writables" type="org.apache.hadoop.io.Writable[]"/>
- <doc>
- <![CDATA[Convert writables to a byte array]]>
- </doc>
- </method>
- <method name="readStringSafely" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <param name="maxLength" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="IllegalArgumentException" type="java.lang.IllegalArgumentException"/>
- <doc>
- <![CDATA[Read a string, but check it for sanity. The format consists of a vint
- followed by the given number of bytes.
- @param in the stream to read from
- @param maxLength the largest acceptable length of the encoded string
- @return the bytes as a string
- @throws IOException if reading from the DataInput fails
- @throws IllegalArgumentException if the encoded byte size for string
- is negative or larger than maxSize. Only the vint is read.]]>
- </doc>
- </method>
- </class>
- <!-- end class org.apache.hadoop.io.WritableUtils -->
- <doc>
- <![CDATA[Generic i/o code for use when reading and writing data to the network,
- to databases, and to files.]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.io.compress">
- <!-- start class org.apache.hadoop.io.compress.BlockCompressorStream -->
- <class name="BlockCompressorStream" extends="org.apache.hadoop.io.compress.CompressorStream"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="BlockCompressorStream" type="java.io.OutputStream, org.apache.hadoop.io.compress.Compressor, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a {@link BlockCompressorStream}.
-
- @param out stream
- @param compressor compressor to be used
- @param bufferSize size of buffer
- @param compressionOverhead maximum 'overhead' of the compression
- algorithm with given bufferSize]]>
- </doc>
- </constructor>
- <constructor name="BlockCompressorStream" type="java.io.OutputStream, org.apache.hadoop.io.compress.Compressor"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a {@link BlockCompressorStream} with given output-stream and
- compressor.
- Use default of 512 as bufferSize and compressionOverhead of
- (1% of bufferSize + 12 bytes) = 18 bytes (zlib algorithm).
-
- @param out stream
- @param compressor compressor to be used]]>
- </doc>
- </constructor>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write the data provided to the compression codec, compressing no more
- than the buffer size less the compression overhead as specified during
- construction for each block.
- Each block contains the uncompressed length for the block, followed by
- one or more length-prefixed blocks of compressed data.]]>
- </doc>
- </method>
- <method name="finish"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="compress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A {@link org.apache.hadoop.io.compress.CompressorStream} which works
- with 'block-based' based compression algorithms, as opposed to
- 'stream-based' compression algorithms.
- It should be noted that this wrapper does not guarantee that blocks will
- be sized for the compressor. If the
- {@link org.apache.hadoop.io.compress.Compressor} requires buffering to
- effect meaningful compression, it is responsible for it.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.BlockCompressorStream -->
- <!-- start class org.apache.hadoop.io.compress.BlockDecompressorStream -->
- <class name="BlockDecompressorStream" extends="org.apache.hadoop.io.compress.DecompressorStream"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="BlockDecompressorStream" type="java.io.InputStream, org.apache.hadoop.io.compress.Decompressor, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link BlockDecompressorStream}.
-
- @param in input stream
- @param decompressor decompressor to use
- @param bufferSize size of buffer
- @throws IOException]]>
- </doc>
- </constructor>
- <constructor name="BlockDecompressorStream" type="java.io.InputStream, org.apache.hadoop.io.compress.Decompressor"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link BlockDecompressorStream}.
-
- @param in input stream
- @param decompressor decompressor to use
- @throws IOException]]>
- </doc>
- </constructor>
- <constructor name="BlockDecompressorStream" type="java.io.InputStream"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <method name="decompress" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getCompressedData" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="resetState"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A {@link org.apache.hadoop.io.compress.DecompressorStream} which works
- with 'block-based' based compression algorithms, as opposed to
- 'stream-based' compression algorithms.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.BlockDecompressorStream -->
- <!-- start class org.apache.hadoop.io.compress.BZip2Codec -->
- <class name="BZip2Codec" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <implements name="org.apache.hadoop.io.compress.SplittableCompressionCodec"/>
- <constructor name="BZip2Codec"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of BZip2Codec.]]>
- </doc>
- </constructor>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Set the configuration to be used by this object.
- @param conf the configuration object.]]>
- </doc>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the configuration used by this object.
- @return the configuration object used by this objec.]]>
- </doc>
- </method>
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionOutputStream} that will write to the given
- {@link OutputStream}.
- @param out the location for the final output stream
- @return a stream the user can write uncompressed data to, to have it
- compressed
- @throws IOException]]>
- </doc>
- </method>
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <param name="compressor" type="org.apache.hadoop.io.compress.Compressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionOutputStream} that will write to the given
- {@link OutputStream} with the given {@link Compressor}.
- @param out the location for the final output stream
- @param compressor compressor to use
- @return a stream the user can write uncompressed data to, to have it
- compressed
- @throws IOException]]>
- </doc>
- </method>
- <method name="getCompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the type of {@link Compressor} needed by this {@link CompressionCodec}.
- @return the type of compressor needed by this codec.]]>
- </doc>
- </method>
- <method name="createCompressor" return="org.apache.hadoop.io.compress.Compressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new {@link Compressor} for use by this {@link CompressionCodec}.
- @return a new compressor for use by this codec]]>
- </doc>
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionInputStream} that will read from the given
- input stream and return a stream for uncompressed data.
- @param in the stream to read compressed bytes from
- @return a stream to read uncompressed bytes from
- @throws IOException]]>
- </doc>
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionInputStream} that will read from the given
- {@link InputStream} with the given {@link Decompressor}, and return a
- stream for uncompressed data.
- @param in the stream to read compressed bytes from
- @param decompressor decompressor to use
- @return a stream to read uncompressed bytes from
- @throws IOException]]>
- </doc>
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.SplitCompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="seekableIn" type="java.io.InputStream"/>
- <param name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"/>
- <param name="start" type="long"/>
- <param name="end" type="long"/>
- <param name="readMode" type="org.apache.hadoop.io.compress.SplittableCompressionCodec.READ_MODE"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Creates CompressionInputStream to be used to read off uncompressed data
- in one of the two reading modes. i.e. Continuous or Blocked reading modes
- @param seekableIn The InputStream
- @param start The start offset into the compressed stream
- @param end The end offset into the compressed stream
- @param readMode Controls whether progress is reported continuously or
- only at block boundaries.
- @return CompressionInputStream for BZip2 aligned at block boundaries]]>
- </doc>
- </method>
- <method name="getDecompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the type of {@link Decompressor} needed by this {@link CompressionCodec}.
- @return the type of decompressor needed by this codec.]]>
- </doc>
- </method>
- <method name="createDecompressor" return="org.apache.hadoop.io.compress.Decompressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new {@link Decompressor} for use by this {@link CompressionCodec}.
- @return a new decompressor for use by this codec]]>
- </doc>
- </method>
- <method name="getDefaultExtension" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[.bz2 is recognized as the default extension for compressed BZip2 files
- @return A String telling the default bzip2 file extension]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This class provides output and input streams for bzip2 compression
- and decompression. It uses the native bzip2 library on the system
- if possible, else it uses a pure-Java implementation of the bzip2
- algorithm. The configuration parameter
- io.compression.codec.bzip2.library can be used to control this
- behavior.
- In the pure-Java mode, the Compressor and Decompressor interfaces
- are not implemented. Therefore, in that mode, those methods of
- CompressionCodec which have a Compressor or Decompressor type
- argument, throw UnsupportedOperationException.
- Currently, support for splittability is available only in the
- pure-Java mode; therefore, if a SplitCompressionInputStream is
- requested, the pure-Java implementation is used, regardless of the
- setting of the configuration parameter mentioned above.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.BZip2Codec -->
- <!-- start class org.apache.hadoop.io.compress.CodecPool -->
- <class name="CodecPool" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CodecPool"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getCompressor" return="org.apache.hadoop.io.compress.Compressor"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Get a {@link Compressor} for the given {@link CompressionCodec} from the
- pool or a new one.
- @param codec the <code>CompressionCodec</code> for which to get the
- <code>Compressor</code>
- @param conf the <code>Configuration</code> object which contains confs for creating or reinit the compressor
- @return <code>Compressor</code> for the given
- <code>CompressionCodec</code> from the pool or a new one]]>
- </doc>
- </method>
- <method name="getCompressor" return="org.apache.hadoop.io.compress.Compressor"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- </method>
- <method name="getDecompressor" return="org.apache.hadoop.io.compress.Decompressor"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <doc>
- <![CDATA[Get a {@link Decompressor} for the given {@link CompressionCodec} from the
- pool or a new one.
-
- @param codec the <code>CompressionCodec</code> for which to get the
- <code>Decompressor</code>
- @return <code>Decompressor</code> for the given
- <code>CompressionCodec</code> the pool or a new one]]>
- </doc>
- </method>
- <method name="returnCompressor"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="compressor" type="org.apache.hadoop.io.compress.Compressor"/>
- <doc>
- <![CDATA[Return the {@link Compressor} to the pool.
-
- @param compressor the <code>Compressor</code> to be returned to the pool]]>
- </doc>
- </method>
- <method name="returnDecompressor"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"/>
- <doc>
- <![CDATA[Return the {@link Decompressor} to the pool.
-
- @param decompressor the <code>Decompressor</code> to be returned to the
- pool]]>
- </doc>
- </method>
- <method name="getLeasedCompressorsCount" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <doc>
- <![CDATA[Return the number of leased {@link Compressor}s for this
- {@link CompressionCodec}]]>
- </doc>
- </method>
- <method name="getLeasedDecompressorsCount" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="codec" type="org.apache.hadoop.io.compress.CompressionCodec"/>
- <doc>
- <![CDATA[Return the number of leased {@link Decompressor}s for this
- {@link CompressionCodec}]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A global compressor/decompressor pool used to save and reuse
- (possibly native) compression/decompression codecs.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.CodecPool -->
- <!-- start interface org.apache.hadoop.io.compress.CompressionCodec -->
- <interface name="CompressionCodec" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionOutputStream} that will write to the given
- {@link OutputStream}.
-
- @param out the location for the final output stream
- @return a stream the user can write uncompressed data to have it compressed
- @throws IOException]]>
- </doc>
- </method>
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <param name="compressor" type="org.apache.hadoop.io.compress.Compressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionOutputStream} that will write to the given
- {@link OutputStream} with the given {@link Compressor}.
-
- @param out the location for the final output stream
- @param compressor compressor to use
- @return a stream the user can write uncompressed data to have it compressed
- @throws IOException]]>
- </doc>
- </method>
- <method name="getCompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the type of {@link Compressor} needed by this {@link CompressionCodec}.
-
- @return the type of compressor needed by this codec.]]>
- </doc>
- </method>
- <method name="createCompressor" return="org.apache.hadoop.io.compress.Compressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new {@link Compressor} for use by this {@link CompressionCodec}.
-
- @return a new compressor for use by this codec]]>
- </doc>
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionInputStream} that will read from the given
- input stream.
-
- @param in the stream to read compressed bytes from
- @return a stream to read uncompressed bytes from
- @throws IOException]]>
- </doc>
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a {@link CompressionInputStream} that will read from the given
- {@link InputStream} with the given {@link Decompressor}.
-
- @param in the stream to read compressed bytes from
- @param decompressor decompressor to use
- @return a stream to read uncompressed bytes from
- @throws IOException]]>
- </doc>
- </method>
- <method name="getDecompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the type of {@link Decompressor} needed by this {@link CompressionCodec}.
-
- @return the type of decompressor needed by this codec.]]>
- </doc>
- </method>
- <method name="createDecompressor" return="org.apache.hadoop.io.compress.Decompressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new {@link Decompressor} for use by this {@link CompressionCodec}.
-
- @return a new decompressor for use by this codec]]>
- </doc>
- </method>
- <method name="getDefaultExtension" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the default filename extension for this kind of compression.
- @return the extension including the '.']]>
- </doc>
- </method>
- <doc>
- <![CDATA[This class encapsulates a streaming compression/decompression pair.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.compress.CompressionCodec -->
- <!-- start class org.apache.hadoop.io.compress.CompressionCodecFactory -->
- <class name="CompressionCodecFactory" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CompressionCodecFactory" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Find the codecs specified in the config value io.compression.codecs
- and register them. Defaults to gzip and deflate.]]>
- </doc>
- </constructor>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Print the extension map out as a string.]]>
- </doc>
- </method>
- <method name="getCodecClasses" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Get the list of codecs discovered via a Java ServiceLoader, or
- listed in the configuration. Codecs specified in configuration come
- later in the returned list, and are considered to override those
- from the ServiceLoader.
- @param conf the configuration to look in
- @return a list of the {@link CompressionCodec} classes]]>
- </doc>
- </method>
- <method name="setCodecClasses"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="classes" type="java.util.List"/>
- <doc>
- <![CDATA[Sets a list of codec classes in the configuration. In addition to any
- classes specified using this method, {@link CompressionCodec} classes on
- the classpath are discovered using a Java ServiceLoader.
- @param conf the configuration to modify
- @param classes the list of classes to set]]>
- </doc>
- </method>
- <method name="getCodec" return="org.apache.hadoop.io.compress.CompressionCodec"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="org.apache.hadoop.fs.Path"/>
- <doc>
- <![CDATA[Find the relevant compression codec for the given file based on its
- filename suffix.
- @param file the filename to check
- @return the codec object]]>
- </doc>
- </method>
- <method name="getCodecByClassName" return="org.apache.hadoop.io.compress.CompressionCodec"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="classname" type="java.lang.String"/>
- <doc>
- <![CDATA[Find the relevant compression codec for the codec's canonical class name.
- @param classname the canonical class name of the codec
- @return the codec object]]>
- </doc>
- </method>
- <method name="getCodecByName" return="org.apache.hadoop.io.compress.CompressionCodec"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="codecName" type="java.lang.String"/>
- <doc>
- <![CDATA[Find the relevant compression codec for the codec's canonical class name
- or by codec alias.
- <p/>
- Codec aliases are case insensitive.
- <p/>
- The code alias is the short class name (without the package name).
- If the short class name ends with 'Codec', then there are two aliases for
- the codec, the complete short class name and the short class name without
- the 'Codec' ending. For example for the 'GzipCodec' codec class name the
- alias are 'gzip' and 'gzipcodec'.
- @param codecName the canonical class name of the codec
- @return the codec object]]>
- </doc>
- </method>
- <method name="getCodecClassByName" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="codecName" type="java.lang.String"/>
- <doc>
- <![CDATA[Find the relevant compression codec for the codec's canonical class name
- or by codec alias and returns its implemetation class.
- <p/>
- Codec aliases are case insensitive.
- <p/>
- The code alias is the short class name (without the package name).
- If the short class name ends with 'Codec', then there are two aliases for
- the codec, the complete short class name and the short class name without
- the 'Codec' ending. For example for the 'GzipCodec' codec class name the
- alias are 'gzip' and 'gzipcodec'.
- @param codecName the canonical class name of the codec
- @return the codec class]]>
- </doc>
- </method>
- <method name="removeSuffix" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filename" type="java.lang.String"/>
- <param name="suffix" type="java.lang.String"/>
- <doc>
- <![CDATA[Removes a suffix from a filename, if it has it.
- @param filename the filename to strip
- @param suffix the suffix to remove
- @return the shortened filename]]>
- </doc>
- </method>
- <method name="main"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[A little test program.
- @param args]]>
- </doc>
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A factory that will find the correct codec for a given filename.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.CompressionCodecFactory -->
- <!-- start class org.apache.hadoop.io.compress.CompressionInputStream -->
- <class name="CompressionInputStream" extends="java.io.InputStream"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.fs.Seekable"/>
- <constructor name="CompressionInputStream" type="java.io.InputStream"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a compression input stream that reads
- the decompressed bytes from the given stream.
-
- @param in The input stream to be compressed.
- @throws IOException]]>
- </doc>
- </constructor>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="read" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read bytes from the stream.
- Made abstract to prevent leakage to underlying stream.]]>
- </doc>
- </method>
- <method name="resetState"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reset the decompressor to its initial state and discard any buffered data,
- as the underlying stream may have been repositioned.]]>
- </doc>
- </method>
- <method name="getPos" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[This method returns the current position in the stream.
- @return Current position in stream as a long]]>
- </doc>
- </method>
- <method name="seek"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="pos" type="long"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- <doc>
- <![CDATA[This method is current not supported.
- @throws UnsupportedOperationException]]>
- </doc>
- </method>
- <method name="seekToNewSource" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="targetPos" type="long"/>
- <exception name="UnsupportedOperationException" type="java.lang.UnsupportedOperationException"/>
- <doc>
- <![CDATA[This method is current not supported.
- @throws UnsupportedOperationException]]>
- </doc>
- </method>
- <field name="in" type="java.io.InputStream"
- transient="false" volatile="false"
- static="false" final="true" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The input stream to be compressed.]]>
- </doc>
- </field>
- <field name="maxAvailableData" type="long"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A compression input stream.
- <p>Implementations are assumed to be buffered. This permits clients to
- reposition the underlying input stream then call {@link #resetState()},
- without having to also synchronize client buffers.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.CompressionInputStream -->
- <!-- start class org.apache.hadoop.io.compress.CompressionOutputStream -->
- <class name="CompressionOutputStream" extends="java.io.OutputStream"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CompressionOutputStream" type="java.io.OutputStream"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a compression output stream that writes
- the compressed bytes to the given stream.
- @param out]]>
- </doc>
- </constructor>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="flush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write compressed bytes to the stream.
- Made abstract to prevent leakage to underlying stream.]]>
- </doc>
- </method>
- <method name="finish"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Finishes writing compressed data to the output stream
- without closing the underlying stream.]]>
- </doc>
- </method>
- <method name="resetState"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reset the compression to the initial state.
- Does not reset the underlying stream.]]>
- </doc>
- </method>
- <field name="out" type="java.io.OutputStream"
- transient="false" volatile="false"
- static="false" final="true" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The output stream to be compressed.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[A compression output stream.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.CompressionOutputStream -->
- <!-- start interface org.apache.hadoop.io.compress.Compressor -->
- <interface name="Compressor" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="setInput"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Sets input data for compression.
- This should be called whenever #needsInput() returns
- <code>true</code> indicating that more input data is required.
-
- @param b Input data
- @param off Start offset
- @param len Length]]>
- </doc>
- </method>
- <method name="needsInput" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the input data buffer is empty and
- #setInput() should be called to provide more input.
-
- @return <code>true</code> if the input data buffer is empty and
- #setInput() should be called in order to provide more input.]]>
- </doc>
- </method>
- <method name="setDictionary"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Sets preset dictionary for compression. A preset dictionary
- is used when the history buffer can be predetermined.
- @param b Dictionary data bytes
- @param off Start offset
- @param len Length]]>
- </doc>
- </method>
- <method name="getBytesRead" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return number of uncompressed bytes input so far.]]>
- </doc>
- </method>
- <method name="getBytesWritten" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return number of compressed bytes output so far.]]>
- </doc>
- </method>
- <method name="finish"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[When called, indicates that compression should end
- with the current contents of the input buffer.]]>
- </doc>
- </method>
- <method name="finished" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if the end of the compressed
- data output stream has been reached.
- @return <code>true</code> if the end of the compressed
- data output stream has been reached.]]>
- </doc>
- </method>
- <method name="compress" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Fills specified buffer with compressed data. Returns actual number
- of bytes of compressed data. A return value of 0 indicates that
- needsInput() should be called in order to determine if more input
- data is required.
-
- @param b Buffer for the compressed data
- @param off Start offset of the data
- @param len Size of the buffer
- @return The actual number of bytes of compressed data.]]>
- </doc>
- </method>
- <method name="reset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Resets compressor so that a new set of input data can be processed.]]>
- </doc>
- </method>
- <method name="end"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Closes the compressor and discards any unprocessed input.]]>
- </doc>
- </method>
- <method name="reinit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Prepare the compressor to be used in a new stream with settings defined in
- the given Configuration
-
- @param conf Configuration from which new setting are fetched]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Specification of a stream-based 'compressor' which can be
- plugged into a {@link CompressionOutputStream} to compress data.
- This is modelled after {@link java.util.zip.Deflater}]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.compress.Compressor -->
- <!-- start class org.apache.hadoop.io.compress.CompressorStream -->
- <class name="CompressorStream" extends="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CompressorStream" type="java.io.OutputStream, org.apache.hadoop.io.compress.Compressor, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="CompressorStream" type="java.io.OutputStream, org.apache.hadoop.io.compress.Compressor"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="CompressorStream" type="java.io.OutputStream"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Allow derived classes to directly set the underlying stream.
-
- @param out Underlying output stream.]]>
- </doc>
- </constructor>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="compress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="finish"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="resetState"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <field name="compressor" type="org.apache.hadoop.io.compress.Compressor"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="buffer" type="byte[]"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="closed" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- </class>
- <!-- end class org.apache.hadoop.io.compress.CompressorStream -->
- <!-- start interface org.apache.hadoop.io.compress.Decompressor -->
- <interface name="Decompressor" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="setInput"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Sets input data for decompression.
- This should be called if and only if {@link #needsInput()} returns
- <code>true</code> indicating that more input data is required.
- (Both native and non-native versions of various Decompressors require
- that the data passed in via <code>b[]</code> remain unmodified until
- the caller is explicitly notified--via {@link #needsInput()}--that the
- buffer may be safely modified. With this requirement, an extra
- buffer-copy can be avoided.)
-
- @param b Input data
- @param off Start offset
- @param len Length]]>
- </doc>
- </method>
- <method name="needsInput" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns <code>true</code> if the input data buffer is empty and
- {@link #setInput(byte[], int, int)} should be called to
- provide more input.
-
- @return <code>true</code> if the input data buffer is empty and
- {@link #setInput(byte[], int, int)} should be called in
- order to provide more input.]]>
- </doc>
- </method>
- <method name="setDictionary"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <doc>
- <![CDATA[Sets preset dictionary for compression. A preset dictionary
- is used when the history buffer can be predetermined.
- @param b Dictionary data bytes
- @param off Start offset
- @param len Length]]>
- </doc>
- </method>
- <method name="needsDictionary" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns <code>true</code> if a preset dictionary is needed for decompression.
- @return <code>true</code> if a preset dictionary is needed for decompression]]>
- </doc>
- </method>
- <method name="finished" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns <code>true</code> if the end of the decompressed
- data output stream has been reached. Indicates a concatenated data stream
- when finished() returns <code>true</code> and {@link #getRemaining()}
- returns a positive value. finished() will be reset with the
- {@link #reset()} method.
- @return <code>true</code> if the end of the decompressed
- data output stream has been reached.]]>
- </doc>
- </method>
- <method name="decompress" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Fills specified buffer with uncompressed data. Returns actual number
- of bytes of uncompressed data. A return value of 0 indicates that
- {@link #needsInput()} should be called in order to determine if more
- input data is required.
-
- @param b Buffer for the compressed data
- @param off Start offset of the data
- @param len Size of the buffer
- @return The actual number of bytes of uncompressed data.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getRemaining" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the number of bytes remaining in the compressed data buffer.
- Indicates a concatenated data stream if {@link #finished()} returns
- <code>true</code> and getRemaining() returns a positive value. If
- {@link #finished()} returns <code>true</code> and getRemaining() returns
- a zero value, indicates that the end of data stream has been reached and
- is not a concatenated data stream.
- @return The number of bytes remaining in the compressed data buffer.]]>
- </doc>
- </method>
- <method name="reset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Resets decompressor and input and output buffers so that a new set of
- input data can be processed. If {@link #finished()}} returns
- <code>true</code> and {@link #getRemaining()} returns a positive value,
- reset() is called before processing of the next data stream in the
- concatenated data stream. {@link #finished()} will be reset and will
- return <code>false</code> when reset() is called.]]>
- </doc>
- </method>
- <method name="end"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Closes the decompressor and discards any unprocessed input.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Specification of a stream-based 'de-compressor' which can be
- plugged into a {@link CompressionInputStream} to compress data.
- This is modelled after {@link java.util.zip.Inflater}]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.compress.Decompressor -->
- <!-- start class org.apache.hadoop.io.compress.DecompressorStream -->
- <class name="DecompressorStream" extends="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="DecompressorStream" type="java.io.InputStream, org.apache.hadoop.io.compress.Decompressor, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <constructor name="DecompressorStream" type="java.io.InputStream, org.apache.hadoop.io.compress.Decompressor"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <constructor name="DecompressorStream" type="java.io.InputStream"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Allow derived classes to directly set the underlying stream.
-
- @param in Underlying input stream.
- @throws IOException]]>
- </doc>
- </constructor>
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="read" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="decompress" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getCompressedData" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="checkStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="resetState"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="skip" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="n" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="available" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="markSupported" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="mark"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="readlimit" type="int"/>
- </method>
- <method name="reset"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <field name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="buffer" type="byte[]"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="eof" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="closed" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- </class>
- <!-- end class org.apache.hadoop.io.compress.DecompressorStream -->
- <!-- start class org.apache.hadoop.io.compress.DefaultCodec -->
- <class name="DefaultCodec" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <implements name="org.apache.hadoop.io.compress.CompressionCodec"/>
- <implements name="org.apache.hadoop.io.compress.DirectDecompressionCodec"/>
- <constructor name="DefaultCodec"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <param name="compressor" type="org.apache.hadoop.io.compress.Compressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getCompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createCompressor" return="org.apache.hadoop.io.compress.Compressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getDecompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createDecompressor" return="org.apache.hadoop.io.compress.Decompressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createDirectDecompressor" return="org.apache.hadoop.io.compress.DirectDecompressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[{@inheritDoc}]]>
- </doc>
- </method>
- <method name="getDefaultExtension" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- </class>
- <!-- end class org.apache.hadoop.io.compress.DefaultCodec -->
- <!-- start interface org.apache.hadoop.io.compress.DirectDecompressionCodec -->
- <interface name="DirectDecompressionCodec" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.compress.CompressionCodec"/>
- <method name="createDirectDecompressor" return="org.apache.hadoop.io.compress.DirectDecompressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new {@link DirectDecompressor} for use by this {@link DirectDecompressionCodec}.
-
- @return a new direct decompressor for use by this codec]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This class encapsulates a codec which can decompress direct bytebuffers.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.compress.DirectDecompressionCodec -->
- <!-- start interface org.apache.hadoop.io.compress.DirectDecompressor -->
- <interface name="DirectDecompressor" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="decompress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="src" type="java.nio.ByteBuffer"/>
- <param name="dst" type="java.nio.ByteBuffer"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Specification of a direct ByteBuffer 'de-compressor'.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.compress.DirectDecompressor -->
- <!-- start class org.apache.hadoop.io.compress.GzipCodec -->
- <class name="GzipCodec" extends="org.apache.hadoop.io.compress.DefaultCodec"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="GzipCodec"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createOutputStream" return="org.apache.hadoop.io.compress.CompressionOutputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.OutputStream"/>
- <param name="compressor" type="org.apache.hadoop.io.compress.Compressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createCompressor" return="org.apache.hadoop.io.compress.Compressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getCompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.InputStream"/>
- <param name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createDecompressor" return="org.apache.hadoop.io.compress.Decompressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDecompressorType" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="createDirectDecompressor" return="org.apache.hadoop.io.compress.DirectDecompressor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getDefaultExtension" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[This class creates gzip compressors/decompressors.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.GzipCodec -->
- <!-- start class org.apache.hadoop.io.compress.SplitCompressionInputStream -->
- <class name="SplitCompressionInputStream" extends="org.apache.hadoop.io.compress.CompressionInputStream"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="SplitCompressionInputStream" type="java.io.InputStream, long, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <method name="setStart"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="start" type="long"/>
- </method>
- <method name="setEnd"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="end" type="long"/>
- </method>
- <method name="getAdjustedStart" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[After calling createInputStream, the values of start or end
- might change. So this method can be used to get the new value of start.
- @return The changed value of start]]>
- </doc>
- </method>
- <method name="getAdjustedEnd" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[After calling createInputStream, the values of start or end
- might change. So this method can be used to get the new value of end.
- @return The changed value of end]]>
- </doc>
- </method>
- <doc>
- <![CDATA[An InputStream covering a range of compressed data. The start and end
- offsets requested by a client may be modified by the codec to fit block
- boundaries or other algorithm-dependent requirements.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.compress.SplitCompressionInputStream -->
- <!-- start interface org.apache.hadoop.io.compress.SplittableCompressionCodec -->
- <interface name="SplittableCompressionCodec" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.compress.CompressionCodec"/>
- <method name="createInputStream" return="org.apache.hadoop.io.compress.SplitCompressionInputStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="seekableIn" type="java.io.InputStream"/>
- <param name="decompressor" type="org.apache.hadoop.io.compress.Decompressor"/>
- <param name="start" type="long"/>
- <param name="end" type="long"/>
- <param name="readMode" type="org.apache.hadoop.io.compress.SplittableCompressionCodec.READ_MODE"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a stream as dictated by the readMode. This method is used when
- the codecs wants the ability to work with the underlying stream positions.
- @param seekableIn The seekable input stream (seeks in compressed data)
- @param start The start offset into the compressed stream. May be changed
- by the underlying codec.
- @param end The end offset into the compressed stream. May be changed by
- the underlying codec.
- @param readMode Controls whether stream position is reported continuously
- from the compressed stream only only at block boundaries.
- @return a stream to read uncompressed bytes from]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This interface is meant to be implemented by those compression codecs
- which are capable to compress / de-compress a stream starting at any
- arbitrary position.
- Especially the process of de-compressing a stream starting at some arbitrary
- position is challenging. Most of the codecs are only able to successfully
- de-compress a stream, if they start from the very beginning till the end.
- One of the reasons is the stored state at the beginning of the stream which
- is crucial for de-compression.
- Yet there are few codecs which do not save the whole state at the beginning
- of the stream and hence can be used to de-compress stream starting at any
- arbitrary points. This interface is meant to be used by such codecs. Such
- codecs are highly valuable, especially in the context of Hadoop, because
- an input compressed file can be split and hence can be worked on by multiple
- machines in parallel.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.compress.SplittableCompressionCodec -->
- </package>
- <package name="org.apache.hadoop.io.file.tfile">
- <!-- start class org.apache.hadoop.io.file.tfile.MetaBlockAlreadyExists -->
- <class name="MetaBlockAlreadyExists" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exception - Meta Block with the same name already exists.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.file.tfile.MetaBlockAlreadyExists -->
- <!-- start class org.apache.hadoop.io.file.tfile.MetaBlockDoesNotExist -->
- <class name="MetaBlockDoesNotExist" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exception - No such Meta Block with the given name.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.file.tfile.MetaBlockDoesNotExist -->
- <!-- start interface org.apache.hadoop.io.file.tfile.RawComparable -->
- <interface name="RawComparable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="buffer" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the underlying byte array.
-
- @return The underlying byte array.]]>
- </doc>
- </method>
- <method name="offset" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the offset of the first byte in the byte array.
-
- @return The offset of the first byte in the byte array.]]>
- </doc>
- </method>
- <method name="size" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the size of the byte range in the byte array.
-
- @return The size of the byte range in the byte array.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Interface for objects that can be compared through {@link RawComparator}.
- This is useful in places where we need a single object reference to specify a
- range of bytes in a byte array, such as {@link Comparable} or
- {@link Collections#binarySearch(java.util.List, Object, Comparator)}
-
- The actual comparison among RawComparable's requires an external
- RawComparator and it is applications' responsibility to ensure two
- RawComparable are supposed to be semantically comparable with the same
- RawComparator.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.file.tfile.RawComparable -->
- <!-- start class org.apache.hadoop.io.file.tfile.TFile -->
- <class name="TFile" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="makeComparator" return="java.util.Comparator"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Make a raw comparator from a string name.
-
- @param name
- Comparator name
- @return A RawComparable comparator.]]>
- </doc>
- </method>
- <method name="getSupportedCompressionAlgorithms" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get names of supported compression algorithms. The names are acceptable by
- TFile.Writer.
-
- @return Array of strings, each represents a supported compression
- algorithm. Currently, the following compression algorithms are
- supported.
- <ul>
- <li>"none" - No compression.
- <li>"lzo" - LZO compression.
- <li>"gz" - GZIP compression.
- </ul>]]>
- </doc>
- </method>
- <method name="main"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Dumping the TFile information.
-
- @param args
- A list of TFile paths.]]>
- </doc>
- </method>
- <field name="COMPRESSION_GZ" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[compression: gzip]]>
- </doc>
- </field>
- <field name="COMPRESSION_LZO" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[compression: lzo]]>
- </doc>
- </field>
- <field name="COMPRESSION_NONE" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[compression: none]]>
- </doc>
- </field>
- <field name="COMPARATOR_MEMCMP" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[comparator: memcmp]]>
- </doc>
- </field>
- <field name="COMPARATOR_JCLASS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[comparator prefix: java class]]>
- </doc>
- </field>
- <doc>
- <![CDATA[A TFile is a container of key-value pairs. Both keys and values are type-less
- bytes. Keys are restricted to 64KB, value length is not restricted
- (practically limited to the available disk storage). TFile further provides
- the following features:
- <ul>
- <li>Block Compression.
- <li>Named meta data blocks.
- <li>Sorted or unsorted keys.
- <li>Seek by key or by file offset.
- </ul>
- The memory footprint of a TFile includes the following:
- <ul>
- <li>Some constant overhead of reading or writing a compressed block.
- <ul>
- <li>Each compressed block requires one compression/decompression codec for
- I/O.
- <li>Temporary space to buffer the key.
- <li>Temporary space to buffer the value (for TFile.Writer only). Values are
- chunk encoded, so that we buffer at most one chunk of user data. By default,
- the chunk buffer is 1MB. Reading chunked value does not require additional
- memory.
- </ul>
- <li>TFile index, which is proportional to the total number of Data Blocks.
- The total amount of memory needed to hold the index can be estimated as
- (56+AvgKeySize)*NumBlocks.
- <li>MetaBlock index, which is proportional to the total number of Meta
- Blocks.The total amount of memory needed to hold the index for Meta Blocks
- can be estimated as (40+AvgMetaBlockName)*NumMetaBlock.
- </ul>
- <p>
- The behavior of TFile can be customized by the following variables through
- Configuration:
- <ul>
- <li><b>tfile.io.chunk.size</b>: Value chunk size. Integer (in bytes). Default
- to 1MB. Values of the length less than the chunk size is guaranteed to have
- known value length in read time (See
- {@link TFile.Reader.Scanner.Entry#isValueLengthKnown()}).
- <li><b>tfile.fs.output.buffer.size</b>: Buffer size used for
- FSDataOutputStream. Integer (in bytes). Default to 256KB.
- <li><b>tfile.fs.input.buffer.size</b>: Buffer size used for
- FSDataInputStream. Integer (in bytes). Default to 256KB.
- </ul>
- <p>
- Suggestions on performance optimization.
- <ul>
- <li>Minimum block size. We recommend a setting of minimum block size between
- 256KB to 1MB for general usage. Larger block size is preferred if files are
- primarily for sequential access. However, it would lead to inefficient random
- access (because there are more data to decompress). Smaller blocks are good
- for random access, but require more memory to hold the block index, and may
- be slower to create (because we must flush the compressor stream at the
- conclusion of each data block, which leads to an FS I/O flush). Further, due
- to the internal caching in Compression codec, the smallest possible block
- size would be around 20KB-30KB.
- <li>The current implementation does not offer true multi-threading for
- reading. The implementation uses FSDataInputStream seek()+read(), which is
- shown to be much faster than positioned-read call in single thread mode.
- However, it also means that if multiple threads attempt to access the same
- TFile (using multiple scanners) simultaneously, the actual I/O is carried out
- sequentially even if they access different DFS blocks.
- <li>Compression codec. Use "none" if the data is not very compressable (by
- compressable, I mean a compression ratio at least 2:1). Generally, use "lzo"
- as the starting point for experimenting. "gz" overs slightly better
- compression ratio over "lzo" but requires 4x CPU to compress and 2x CPU to
- decompress, comparing to "lzo".
- <li>File system buffering, if the underlying FSDataInputStream and
- FSDataOutputStream is already adequately buffered; or if applications
- reads/writes keys and values in large buffers, we can reduce the sizes of
- input/output buffering in TFile layer by setting the configuration parameters
- "tfile.fs.input.buffer.size" and "tfile.fs.output.buffer.size".
- </ul>
-
- Some design rationale behind TFile can be found at <a
- href=https://issues.apache.org/jira/browse/HADOOP-3315>Hadoop-3315</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.file.tfile.TFile -->
- <!-- start class org.apache.hadoop.io.file.tfile.Utils -->
- <class name="Utils" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="writeVInt"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="n" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Encoding an integer into a variable-length encoding format. Synonymous to
- <code>Utils#writeVLong(out, n)</code>.
-
- @param out
- output stream
- @param n
- The integer to be encoded
- @throws IOException
- @see Utils#writeVLong(DataOutput, long)]]>
- </doc>
- </method>
- <method name="writeVLong"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="n" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Encoding a Long integer into a variable-length encoding format.
- <ul>
- <li>if n in [-32, 127): encode in one byte with the actual value.
- Otherwise,
- <li>if n in [-20*2^8, 20*2^8): encode in two bytes: byte[0] = n/256 - 52;
- byte[1]=n&0xff. Otherwise,
- <li>if n IN [-16*2^16, 16*2^16): encode in three bytes: byte[0]=n/2^16 -
- 88; byte[1]=(n>>8)&0xff; byte[2]=n&0xff. Otherwise,
- <li>if n in [-8*2^24, 8*2^24): encode in four bytes: byte[0]=n/2^24 - 112;
- byte[1] = (n>>16)&0xff; byte[2] = (n>>8)&0xff; byte[3]=n&0xff. Otherwise:
- <li>if n in [-2^31, 2^31): encode in five bytes: byte[0]=-125; byte[1] =
- (n>>24)&0xff; byte[2]=(n>>16)&0xff; byte[3]=(n>>8)&0xff; byte[4]=n&0xff;
- <li>if n in [-2^39, 2^39): encode in six bytes: byte[0]=-124; byte[1] =
- (n>>32)&0xff; byte[2]=(n>>24)&0xff; byte[3]=(n>>16)&0xff;
- byte[4]=(n>>8)&0xff; byte[5]=n&0xff
- <li>if n in [-2^47, 2^47): encode in seven bytes: byte[0]=-123; byte[1] =
- (n>>40)&0xff; byte[2]=(n>>32)&0xff; byte[3]=(n>>24)&0xff;
- byte[4]=(n>>16)&0xff; byte[5]=(n>>8)&0xff; byte[6]=n&0xff;
- <li>if n in [-2^55, 2^55): encode in eight bytes: byte[0]=-122; byte[1] =
- (n>>48)&0xff; byte[2] = (n>>40)&0xff; byte[3]=(n>>32)&0xff;
- byte[4]=(n>>24)&0xff; byte[5]=(n>>16)&0xff; byte[6]=(n>>8)&0xff;
- byte[7]=n&0xff;
- <li>if n in [-2^63, 2^63): encode in nine bytes: byte[0]=-121; byte[1] =
- (n>>54)&0xff; byte[2] = (n>>48)&0xff; byte[3] = (n>>40)&0xff;
- byte[4]=(n>>32)&0xff; byte[5]=(n>>24)&0xff; byte[6]=(n>>16)&0xff;
- byte[7]=(n>>8)&0xff; byte[8]=n&0xff;
- </ul>
-
- @param out
- output stream
- @param n
- the integer number
- @throws IOException]]>
- </doc>
- </method>
- <method name="readVInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Decoding the variable-length integer. Synonymous to
- <code>(int)Utils#readVLong(in)</code>.
-
- @param in
- input stream
- @return the decoded integer
- @throws IOException
-
- @see Utils#readVLong(DataInput)]]>
- </doc>
- </method>
- <method name="readVLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Decoding the variable-length integer. Suppose the value of the first byte
- is FB, and the following bytes are NB[*].
- <ul>
- <li>if (FB >= -32), return (long)FB;
- <li>if (FB in [-72, -33]), return (FB+52)<<8 + NB[0]&0xff;
- <li>if (FB in [-104, -73]), return (FB+88)<<16 + (NB[0]&0xff)<<8 +
- NB[1]&0xff;
- <li>if (FB in [-120, -105]), return (FB+112)<<24 + (NB[0]&0xff)<<16 +
- (NB[1]&0xff)<<8 + NB[2]&0xff;
- <li>if (FB in [-128, -121]), return interpret NB[FB+129] as a signed
- big-endian integer.
-
- @param in
- input stream
- @return the decoded long integer.
- @throws IOException]]>
- </doc>
- </method>
- <method name="writeString"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <param name="s" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a String as a VInt n, followed by n Bytes as in Text format.
-
- @param out
- @param s
- @throws IOException]]>
- </doc>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a String as a VInt n, followed by n Bytes in Text format.
-
- @param in
- The input stream.
- @return The string
- @throws IOException]]>
- </doc>
- </method>
- <method name="lowerBound" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="list" type="java.util.List"/>
- <param name="key" type="T"/>
- <param name="cmp" type="java.util.Comparator"/>
- <doc>
- <![CDATA[Lower bound binary search. Find the index to the first element in the list
- that compares greater than or equal to key.
-
- @param <T>
- Type of the input key.
- @param list
- The list
- @param key
- The input key.
- @param cmp
- Comparator for the key.
- @return The index to the desired element if it exists; or list.size()
- otherwise.]]>
- </doc>
- </method>
- <method name="upperBound" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="list" type="java.util.List"/>
- <param name="key" type="T"/>
- <param name="cmp" type="java.util.Comparator"/>
- <doc>
- <![CDATA[Upper bound binary search. Find the index to the first element in the list
- that compares greater than the input key.
-
- @param <T>
- Type of the input key.
- @param list
- The list
- @param key
- The input key.
- @param cmp
- Comparator for the key.
- @return The index to the desired element if it exists; or list.size()
- otherwise.]]>
- </doc>
- </method>
- <method name="lowerBound" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="list" type="java.util.List"/>
- <param name="key" type="T"/>
- <doc>
- <![CDATA[Lower bound binary search. Find the index to the first element in the list
- that compares greater than or equal to key.
-
- @param <T>
- Type of the input key.
- @param list
- The list
- @param key
- The input key.
- @return The index to the desired element if it exists; or list.size()
- otherwise.]]>
- </doc>
- </method>
- <method name="upperBound" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="list" type="java.util.List"/>
- <param name="key" type="T"/>
- <doc>
- <![CDATA[Upper bound binary search. Find the index to the first element in the list
- that compares greater than the input key.
-
- @param <T>
- Type of the input key.
- @param list
- The list
- @param key
- The input key.
- @return The index to the desired element if it exists; or list.size()
- otherwise.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Supporting Utility classes used by TFile, and shared by users of TFile.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.file.tfile.Utils -->
- </package>
- <package name="org.apache.hadoop.io.serializer">
- <!-- start class org.apache.hadoop.io.serializer.JavaSerialization -->
- <class name="JavaSerialization" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.serializer.Serialization"/>
- <constructor name="JavaSerialization"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[<p>
- An experimental {@link Serialization} for Java {@link Serializable} classes.
- </p>
- @see JavaSerializationComparator]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.serializer.JavaSerialization -->
- <!-- start class org.apache.hadoop.io.serializer.JavaSerializationComparator -->
- <class name="JavaSerializationComparator" extends="org.apache.hadoop.io.serializer.DeserializerComparator"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="JavaSerializationComparator"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </constructor>
- <doc>
- <![CDATA[<p>
- A {@link RawComparator} that uses a {@link JavaSerialization}
- {@link Deserializer} to deserialize objects that are then compared via
- their {@link Comparable} interfaces.
- </p>
- @param <T>
- @see JavaSerialization]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.serializer.JavaSerializationComparator -->
- <!-- start class org.apache.hadoop.io.serializer.WritableSerialization -->
- <class name="WritableSerialization" extends="org.apache.hadoop.conf.Configured"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.serializer.Serialization"/>
- <constructor name="WritableSerialization"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[A {@link Serialization} for {@link Writable}s that delegates to
- {@link Writable#write(java.io.DataOutput)} and
- {@link Writable#readFields(java.io.DataInput)}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.serializer.WritableSerialization -->
- <doc>
- <![CDATA[<p>
- This package provides a mechanism for using different serialization frameworks
- in Hadoop. The property "io.serializations" defines a list of
- {@link org.apache.hadoop.io.serializer.Serialization}s that know how to create
- {@link org.apache.hadoop.io.serializer.Serializer}s and
- {@link org.apache.hadoop.io.serializer.Deserializer}s.
- </p>
- <p>
- To add a new serialization framework write an implementation of
- {@link org.apache.hadoop.io.serializer.Serialization} and add its name to the
- "io.serializations" property.
- </p>]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.io.serializer.avro">
- <!-- start interface org.apache.hadoop.io.serializer.avro.AvroReflectSerializable -->
- <interface name="AvroReflectSerializable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Tag interface for Avro 'reflect' serializable classes. Classes implementing
- this interface can be serialized/deserialized using
- {@link AvroReflectSerialization}.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.io.serializer.avro.AvroReflectSerializable -->
- <!-- start class org.apache.hadoop.io.serializer.avro.AvroReflectSerialization -->
- <class name="AvroReflectSerialization" extends="org.apache.hadoop.io.serializer.avro.AvroSerialization"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="AvroReflectSerialization"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <field name="AVRO_REFLECT_PACKAGES" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Key to configure packages that contain classes to be serialized and
- deserialized using this class. Multiple packages can be specified using
- comma-separated list.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Serialization for Avro Reflect classes. For a class to be accepted by this
- serialization, it must either be in the package list configured via
- <code>avro.reflect.pkgs</code> or implement
- {@link AvroReflectSerializable} interface.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.serializer.avro.AvroReflectSerialization -->
- <!-- start class org.apache.hadoop.io.serializer.avro.AvroSerialization -->
- <class name="AvroSerialization" extends="org.apache.hadoop.conf.Configured"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.serializer.Serialization"/>
- <constructor name="AvroSerialization"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <field name="AVRO_SCHEMA_KEY" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Base class for providing serialization to Avro types.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.serializer.avro.AvroSerialization -->
- <!-- start class org.apache.hadoop.io.serializer.avro.AvroSpecificSerialization -->
- <class name="AvroSpecificSerialization" extends="org.apache.hadoop.io.serializer.avro.AvroSerialization"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="AvroSpecificSerialization"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Serialization for Avro Specific classes. This serialization is to be used
- for classes generated by Avro's 'specific' compiler.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.io.serializer.avro.AvroSpecificSerialization -->
- <doc>
- <![CDATA[<p>
- This package provides Avro serialization in Hadoop. This can be used to
- serialize/deserialize Avro types in Hadoop.
- </p>
- <p>
- Use {@link org.apache.hadoop.io.serializer.avro.AvroSpecificSerialization} for
- serialization of classes generated by Avro's 'specific' compiler.
- </p>
- <p>
- Use {@link org.apache.hadoop.io.serializer.avro.AvroReflectSerialization} for
- other classes.
- {@link org.apache.hadoop.io.serializer.avro.AvroReflectSerialization} work for
- any class which is either in the package list configured via
- {@link org.apache.hadoop.io.serializer.avro.AvroReflectSerialization#AVRO_REFLECT_PACKAGES}
- or implement {@link org.apache.hadoop.io.serializer.avro.AvroReflectSerializable}
- interface.
- </p>]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.ipc.protocolPB">
- </package>
- <package name="org.apache.hadoop.log">
- </package>
- <package name="org.apache.hadoop.log.metrics">
- <!-- start class org.apache.hadoop.log.metrics.EventCounter -->
- <class name="EventCounter" extends="org.apache.log4j.AppenderSkeleton"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="EventCounter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="append"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="event" type="org.apache.log4j.spi.LoggingEvent"/>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="requiresLayout" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A log4J Appender that simply counts logging events in three levels:
- fatal, error and warn. The class name is used in log4j.properties]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.log.metrics.EventCounter -->
- </package>
- <package name="org.apache.hadoop.metrics">
- <doc>
- <![CDATA[This package defines an API for reporting performance metric information.
- <p/>
- The API is abstract so that it can be implemented on top of
- a variety of metrics client libraries. The choice of
- client library is a configuration option, and different
- modules within the same application can use
- different metrics implementation libraries.
- <p/>
- Sub-packages:
- <dl>
- <dt><code>org.apache.hadoop.metrics.spi</code></dt>
- <dd>The abstract Server Provider Interface package. Those wishing to
- integrate the metrics API with a particular metrics client library should
- extend this package.</dd>
-
- <dt><code>org.apache.hadoop.metrics.file</code></dt>
- <dd>An implementation package which writes the metric data to
- a file, or sends it to the standard output stream.</dd>
-
- <dt> <code>org.apache.hadoop.metrics.ganglia</code></dt>
- <dd>An implementation package which sends metric data to
- <a href="http://ganglia.sourceforge.net/">Ganglia</a>.</dd>
- </dl>
- <h3>Introduction to the Metrics API</h3>
- Here is a simple example of how to use this package to report a single
- metric value:
- <pre>
- private ContextFactory contextFactory = ContextFactory.getFactory();
-
- void reportMyMetric(float myMetric) {
- MetricsContext myContext = contextFactory.getContext("myContext");
- MetricsRecord myRecord = myContext.getRecord("myRecord");
- myRecord.setMetric("myMetric", myMetric);
- myRecord.update();
- }
- </pre>
-
- In this example there are three names:
- <dl>
- <dt><i>myContext</i></dt>
- <dd>The context name will typically identify either the application, or else a
- module within an application or library.</dd>
-
- <dt><i>myRecord</i></dt>
- <dd>The record name generally identifies some entity for which a set of
- metrics are to be reported. For example, you could have a record named
- "cacheStats" for reporting a number of statistics relating to the usage of
- some cache in your application.</dd>
-
- <dt><i>myMetric</i></dt>
- <dd>This identifies a particular metric. For example, you might have metrics
- named "cache_hits" and "cache_misses".
- </dd>
- </dl>
- <h3>Tags</h3>
- In some cases it is useful to have multiple records with the same name. For
- example, suppose that you want to report statistics about each disk on a computer.
- In this case, the record name would be something like "diskStats", but you also
- need to identify the disk which is done by adding a <i>tag</i> to the record.
- The code could look something like this:
- <pre>
- private MetricsRecord diskStats =
- contextFactory.getContext("myContext").getRecord("diskStats");
-
- void reportDiskMetrics(String diskName, float diskBusy, float diskUsed) {
- diskStats.setTag("diskName", diskName);
- diskStats.setMetric("diskBusy", diskBusy);
- diskStats.setMetric("diskUsed", diskUsed);
- diskStats.update();
- }
- </pre>
- <h3>Buffering and Callbacks</h3>
- Data is not sent immediately to the metrics system when
- <code>MetricsRecord.update()</code> is called. Instead it is stored in an
- internal table, and the contents of the table are sent periodically.
- This can be important for two reasons:
- <ol>
- <li>It means that a programmer is free to put calls to this API in an
- inner loop, since updates can be very frequent without slowing down
- the application significantly.</li>
- <li>Some implementations can gain efficiency by combining many metrics
- into a single UDP message.</li>
- </ol>
- The API provides a timer-based callback via the
- <code>registerUpdater()</code> method. The benefit of this
- versus using <code>java.util.Timer</code> is that the callbacks will be done
- immediately before sending the data, making the data as current as possible.
- <h3>Configuration</h3>
- It is possible to programmatically examine and modify configuration data
- before creating a context, like this:
- <pre>
- ContextFactory factory = ContextFactory.getFactory();
- ... examine and/or modify factory attributes ...
- MetricsContext context = factory.getContext("myContext");
- </pre>
- The factory attributes can be examined and modified using the following
- <code>ContextFactory</code>methods:
- <ul>
- <li><code>Object getAttribute(String attributeName)</code></li>
- <li><code>String[] getAttributeNames()</code></li>
- <li><code>void setAttribute(String name, Object value)</code></li>
- <li><code>void removeAttribute(attributeName)</code></li>
- </ul>
- <p/>
- <code>ContextFactory.getFactory()</code> initializes the factory attributes by
- reading the properties file <code>hadoop-metrics.properties</code> if it exists
- on the class path.
- <p/>
- A factory attribute named:
- <pre>
- <i>contextName</i>.class
- </pre>
- should have as its value the fully qualified name of the class to be
- instantiated by a call of the <code>CodeFactory</code> method
- <code>getContext(<i>contextName</i>)</code>. If this factory attribute is not
- specified, the default is to instantiate
- <code>org.apache.hadoop.metrics.file.FileContext</code>.
- <p/>
- Other factory attributes are specific to a particular implementation of this
- API and are documented elsewhere. For example, configuration attributes for
- the file and Ganglia implementations can be found in the javadoc for
- their respective packages.]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.metrics.ganglia">
- <!-- start class org.apache.hadoop.metrics.ganglia.GangliaContext -->
- <class name="GangliaContext" extends="org.apache.hadoop.metrics.spi.AbstractMetricsContext"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link org.apache.hadoop.metrics2.sink.ganglia.GangliaSink30}
- instead.">
- <constructor name="GangliaContext"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of GangliaContext]]>
- </doc>
- </constructor>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[method to close the datagram socket]]>
- </doc>
- </method>
- <method name="emitMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="type" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getUnits" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- </method>
- <method name="getSlope" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- </method>
- <method name="getTmax" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- </method>
- <method name="getDmax" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- </method>
- <method name="xdr_string"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- <doc>
- <![CDATA[Puts a string into the buffer by first writing the size of the string
- as an int, followed by the bytes of the string, padded if necessary to
- a multiple of 4.]]>
- </doc>
- </method>
- <method name="xdr_int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- <doc>
- <![CDATA[Puts an integer into the buffer as 4 bytes, big-endian.]]>
- </doc>
- </method>
- <field name="buffer" type="byte[]"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="offset" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="metricsServers" type="java.util.List"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="datagramSocket" type="java.net.DatagramSocket"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Context for sending metrics to Ganglia.
- @deprecated Use {@link org.apache.hadoop.metrics2.sink.ganglia.GangliaSink30}
- instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.ganglia.GangliaContext -->
- <doc>
- <![CDATA[<!--
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- -->
- Implementation of the metrics package that sends metric data to
- <a href="http://ganglia.sourceforge.net/">Ganglia</a>.
- Programmers should not normally need to use this package directly. Instead
- they should use org.hadoop.metrics.
- <p/>
- These are the implementation specific factory attributes
- (See ContextFactory.getFactory()):
- <dl>
- <dt><i>contextName</i>.servers</dt>
- <dd>Space and/or comma separated sequence of servers to which UDP
- messages should be sent.</dd>
-
- <dt><i>contextName</i>.period</dt>
- <dd>The period in seconds on which the metric data is sent to the
- server(s).</dd>
- <dt><i>contextName</i>.multicast</dt>
- <dd>Enable multicast for Ganglia</dd>
- <dt><i>contextName</i>.multicast.ttl</dt>
- <dd>TTL for multicast packets</dd>
-
- <dt><i>contextName</i>.units.<i>recordName</i>.<i>metricName</i></dt>
- <dd>The units for the specified metric in the specified record.</dd>
-
- <dt><i>contextName</i>.slope.<i>recordName</i>.<i>metricName</i></dt>
- <dd>The slope for the specified metric in the specified record.</dd>
-
- <dt><i>contextName</i>.tmax.<i>recordName</i>.<i>metricName</i></dt>
- <dd>The tmax for the specified metric in the specified record.</dd>
-
- <dt><i>contextName</i>.dmax.<i>recordName</i>.<i>metricName</i></dt>
- <dd>The dmax for the specified metric in the specified record.</dd>
-
- </dl>]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.metrics.spi">
- <!-- start class org.apache.hadoop.metrics.spi.AbstractMetricsContext -->
- <class name="AbstractMetricsContext" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Use org.apache.hadoop.metrics2 package instead.">
- <implements name="org.apache.hadoop.metrics.MetricsContext"/>
- <constructor name="AbstractMetricsContext"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of AbstractMetricsContext]]>
- </doc>
- </constructor>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="contextName" type="java.lang.String"/>
- <param name="factory" type="org.apache.hadoop.metrics.ContextFactory"/>
- <doc>
- <![CDATA[Initializes the context.]]>
- </doc>
- </method>
- <method name="getAttribute" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="attributeName" type="java.lang.String"/>
- <doc>
- <![CDATA[Convenience method for subclasses to access factory attributes.]]>
- </doc>
- </method>
- <method name="getAttributeTable" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="tableName" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns an attribute-value map derived from the factory attributes
- by finding all factory attributes that begin with
- <i>contextName</i>.<i>tableName</i>. The returned map consists of
- those attributes with the contextName and tableName stripped off.]]>
- </doc>
- </method>
- <method name="getContextName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the context name.]]>
- </doc>
- </method>
- <method name="getContextFactory" return="org.apache.hadoop.metrics.ContextFactory"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the factory by which this context was created.]]>
- </doc>
- </method>
- <method name="startMonitoring"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Starts or restarts monitoring, the emitting of metrics records.]]>
- </doc>
- </method>
- <method name="stopMonitoring"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stops monitoring. This does not free buffered data.
- @see #close()]]>
- </doc>
- </method>
- <method name="isMonitoring" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns true if monitoring is currently in progress.]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stops monitoring and frees buffered data, returning this
- object to its initial state.]]>
- </doc>
- </method>
- <method name="createRecord" return="org.apache.hadoop.metrics.MetricsRecord"
- abstract="false" native="false" synchronized="true"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="recordName" type="java.lang.String"/>
- <doc>
- <![CDATA[Creates a new AbstractMetricsRecord instance with the given <code>recordName</code>.
- Throws an exception if the metrics implementation is configured with a fixed
- set of record names and <code>recordName</code> is not in that set.
-
- @param recordName the name of the record
- @throws MetricsException if recordName conflicts with configuration data]]>
- </doc>
- </method>
- <method name="newRecord" return="org.apache.hadoop.metrics.MetricsRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="recordName" type="java.lang.String"/>
- <doc>
- <![CDATA[Subclasses should override this if they subclass MetricsRecordImpl.
- @param recordName the name of the record
- @return newly created instance of MetricsRecordImpl or subclass]]>
- </doc>
- </method>
- <method name="registerUpdater"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="updater" type="org.apache.hadoop.metrics.Updater"/>
- <doc>
- <![CDATA[Registers a callback to be called at time intervals determined by
- the configuration.
- @param updater object to be run periodically; it should update
- some metrics records]]>
- </doc>
- </method>
- <method name="unregisterUpdater"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="updater" type="org.apache.hadoop.metrics.Updater"/>
- <doc>
- <![CDATA[Removes a callback, if it exists.
- @param updater object to be removed from the callback list]]>
- </doc>
- </method>
- <method name="getAllRecords" return="java.util.Map"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Retrieves all the records managed by this MetricsContext.
- Useful for monitoring systems that are polling-based.
- @return A non-null collection of all monitoring records.]]>
- </doc>
- </method>
- <method name="emitRecord"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="contextName" type="java.lang.String"/>
- <param name="recordName" type="java.lang.String"/>
- <param name="outRec" type="org.apache.hadoop.metrics.spi.OutputRecord"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Sends a record to the metrics system.]]>
- </doc>
- </method>
- <method name="flush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Called each period after all records have been emitted, this method does nothing.
- Subclasses may override it in order to perform some kind of flush.]]>
- </doc>
- </method>
- <method name="update"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics.spi.MetricsRecordImpl"/>
- <doc>
- <![CDATA[Called by MetricsRecordImpl.update(). Creates or updates a row in
- the internal table of metric data.]]>
- </doc>
- </method>
- <method name="remove"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics.spi.MetricsRecordImpl"/>
- <doc>
- <![CDATA[Called by MetricsRecordImpl.remove(). Removes all matching rows in
- the internal table of metric data. A row matches if it has the same
- tag names and values as record, but it may also have additional
- tags.]]>
- </doc>
- </method>
- <method name="getPeriod" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the timer period.]]>
- </doc>
- </method>
- <method name="setPeriod"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="period" type="int"/>
- <doc>
- <![CDATA[Sets the timer period]]>
- </doc>
- </method>
- <method name="parseAndSetPeriod"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="attributeName" type="java.lang.String"/>
- <doc>
- <![CDATA[If a period is set in the attribute passed in, override
- the default with it.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The main class of the Service Provider Interface. This class should be
- extended in order to integrate the Metrics API with a specific metrics
- client library. <p/>
- This class implements the internal table of metric data, and the timer
- on which data is to be sent to the metrics system. Subclasses must
- override the abstract <code>emitRecord</code> method in order to transmit
- the data. <p/>
- @deprecated Use org.apache.hadoop.metrics2 package instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.AbstractMetricsContext -->
- <!-- start class org.apache.hadoop.metrics.spi.CompositeContext -->
- <class name="CompositeContext" extends="org.apache.hadoop.metrics.spi.AbstractMetricsContext"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use org.apache.hadoop.metrics2 package instead.">
- <constructor name="CompositeContext"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[@deprecated Use org.apache.hadoop.metrics2 package instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.CompositeContext -->
- <!-- start class org.apache.hadoop.metrics.spi.MetricsRecordImpl -->
- <class name="MetricsRecordImpl" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use {@link org.apache.hadoop.metrics2.impl.MetricsRecordImpl}
- instead.">
- <implements name="org.apache.hadoop.metrics.MetricsRecord"/>
- <constructor name="MetricsRecordImpl" type="java.lang.String, org.apache.hadoop.metrics.spi.AbstractMetricsContext"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of FileRecord]]>
- </doc>
- </constructor>
- <method name="getRecordName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the record name.
- @return the record name]]>
- </doc>
- </method>
- <method name="setTag"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tagName" type="java.lang.String"/>
- <param name="tagValue" type="java.lang.String"/>
- <doc>
- <![CDATA[Sets the named tag to the specified value.
- @param tagName name of the tag
- @param tagValue new value of the tag
- @throws MetricsException if the tagName conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setTag"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tagName" type="java.lang.String"/>
- <param name="tagValue" type="int"/>
- <doc>
- <![CDATA[Sets the named tag to the specified value.
- @param tagName name of the tag
- @param tagValue new value of the tag
- @throws MetricsException if the tagName conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setTag"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tagName" type="java.lang.String"/>
- <param name="tagValue" type="long"/>
- <doc>
- <![CDATA[Sets the named tag to the specified value.
- @param tagName name of the tag
- @param tagValue new value of the tag
- @throws MetricsException if the tagName conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setTag"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tagName" type="java.lang.String"/>
- <param name="tagValue" type="short"/>
- <doc>
- <![CDATA[Sets the named tag to the specified value.
- @param tagName name of the tag
- @param tagValue new value of the tag
- @throws MetricsException if the tagName conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setTag"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tagName" type="java.lang.String"/>
- <param name="tagValue" type="byte"/>
- <doc>
- <![CDATA[Sets the named tag to the specified value.
- @param tagName name of the tag
- @param tagValue new value of the tag
- @throws MetricsException if the tagName conflicts with the configuration]]>
- </doc>
- </method>
- <method name="removeTag"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tagName" type="java.lang.String"/>
- <doc>
- <![CDATA[Removes any tag of the specified name.]]>
- </doc>
- </method>
- <method name="setMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="int"/>
- <doc>
- <![CDATA[Sets the named metric to the specified value.
- @param metricName name of the metric
- @param metricValue new value of the metric
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="long"/>
- <doc>
- <![CDATA[Sets the named metric to the specified value.
- @param metricName name of the metric
- @param metricValue new value of the metric
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="short"/>
- <doc>
- <![CDATA[Sets the named metric to the specified value.
- @param metricName name of the metric
- @param metricValue new value of the metric
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="byte"/>
- <doc>
- <![CDATA[Sets the named metric to the specified value.
- @param metricName name of the metric
- @param metricValue new value of the metric
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="setMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="float"/>
- <doc>
- <![CDATA[Sets the named metric to the specified value.
- @param metricName name of the metric
- @param metricValue new value of the metric
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="incrMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="int"/>
- <doc>
- <![CDATA[Increments the named metric by the specified value.
- @param metricName name of the metric
- @param metricValue incremental value
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="incrMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="long"/>
- <doc>
- <![CDATA[Increments the named metric by the specified value.
- @param metricName name of the metric
- @param metricValue incremental value
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="incrMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="short"/>
- <doc>
- <![CDATA[Increments the named metric by the specified value.
- @param metricName name of the metric
- @param metricValue incremental value
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="incrMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="byte"/>
- <doc>
- <![CDATA[Increments the named metric by the specified value.
- @param metricName name of the metric
- @param metricValue incremental value
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="incrMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metricName" type="java.lang.String"/>
- <param name="metricValue" type="float"/>
- <doc>
- <![CDATA[Increments the named metric by the specified value.
- @param metricName name of the metric
- @param metricValue incremental value
- @throws MetricsException if the metricName or the type of the metricValue
- conflicts with the configuration]]>
- </doc>
- </method>
- <method name="update"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Updates the table of buffered data which is to be sent periodically.
- If the tag values match an existing row, that row is updated;
- otherwise, a new row is added.]]>
- </doc>
- </method>
- <method name="remove"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Removes the row, if it exists, in the buffered data table having tags
- that equal the tags that have been set on this record.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[An implementation of MetricsRecord. Keeps a back-pointer to the context
- from which it was created, and delegates back to it on <code>update</code>
- and <code>remove()</code>.
- @deprecated Use {@link org.apache.hadoop.metrics2.impl.MetricsRecordImpl}
- instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.MetricsRecordImpl -->
- <!-- start class org.apache.hadoop.metrics.spi.MetricValue -->
- <class name="MetricValue" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MetricValue" type="java.lang.Number, boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of MetricValue]]>
- </doc>
- </constructor>
- <method name="isIncrement" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isAbsolute" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getNumber" return="java.lang.Number"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <field name="ABSOLUTE" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="INCREMENT" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A Number that is either an absolute or an incremental amount.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.MetricValue -->
- <!-- start class org.apache.hadoop.metrics.spi.NoEmitMetricsContext -->
- <class name="NoEmitMetricsContext" extends="org.apache.hadoop.metrics.spi.AbstractMetricsContext"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use org.apache.hadoop.metrics2 package instead.">
- <constructor name="NoEmitMetricsContext"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of NullContextWithUpdateThread]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[A MetricsContext that does not emit data, but, unlike NullContextWithUpdate,
- does save it for retrieval with getAllRecords().
-
- This is useful if you want to support {@link MetricsServlet}, but
- not emit metrics in any other way.
- @deprecated Use org.apache.hadoop.metrics2 package instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.NoEmitMetricsContext -->
- <!-- start class org.apache.hadoop.metrics.spi.NullContext -->
- <class name="NullContext" extends="org.apache.hadoop.metrics.spi.AbstractMetricsContext"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use org.apache.hadoop.metrics2 package instead.">
- <constructor name="NullContext"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of NullContext]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[Null metrics context: a metrics context which does nothing. Used as the
- default context, so that no performance data is emitted if no configuration
- data is found.
-
- @deprecated Use org.apache.hadoop.metrics2 package instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.NullContext -->
- <!-- start class org.apache.hadoop.metrics.spi.NullContextWithUpdateThread -->
- <class name="NullContextWithUpdateThread" extends="org.apache.hadoop.metrics.spi.AbstractMetricsContext"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use org.apache.hadoop.metrics2 package instead.">
- <constructor name="NullContextWithUpdateThread"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of NullContextWithUpdateThread]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[A null context which has a thread calling
- periodically when monitoring is started. This keeps the data sampled
- correctly.
- In all other respects, this is like the NULL context: No data is emitted.
- This is suitable for Monitoring systems like JMX which reads the metrics
- when someone reads the data from JMX.
-
- The default impl of start and stop monitoring:
- is the AbstractMetricsContext is good enough.
-
- @deprecated Use org.apache.hadoop.metrics2 package instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.NullContextWithUpdateThread -->
- <!-- start class org.apache.hadoop.metrics.spi.OutputRecord -->
- <class name="OutputRecord" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use org.apache.hadoop.metrics2 package instead.">
- <method name="getTagNames" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the set of tag names]]>
- </doc>
- </method>
- <method name="getTag" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns a tag object which is can be a String, Integer, Short or Byte.
- @return the tag value, or null if there is no such tag]]>
- </doc>
- </method>
- <method name="getMetricNames" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the set of metric names.]]>
- </doc>
- </method>
- <method name="getMetric" return="java.lang.Number"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns the metric object which can be a Float, Integer, Short or Byte.]]>
- </doc>
- </method>
- <method name="getTagsCopy" return="org.apache.hadoop.metrics.spi.AbstractMetricsContext.TagMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a copy of this record's tags.]]>
- </doc>
- </method>
- <method name="getMetricsCopy" return="org.apache.hadoop.metrics.spi.AbstractMetricsContext.MetricMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a copy of this record's metrics.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Represents a record of metric data to be sent to a metrics system.
- @deprecated Use org.apache.hadoop.metrics2 package instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.OutputRecord -->
- <!-- start class org.apache.hadoop.metrics.spi.Util -->
- <class name="Util" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Use org.apache.hadoop.metrics2 package instead.">
- <method name="parse" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="specs" type="java.lang.String"/>
- <param name="defaultPort" type="int"/>
- <doc>
- <![CDATA[Parses a space and/or comma separated sequence of server specifications
- of the form <i>hostname</i> or <i>hostname:port</i>. If
- the specs string is null, defaults to localhost:defaultPort.
-
- @return a list of InetSocketAddress objects.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Static utility methods
- @deprecated Use org.apache.hadoop.metrics2 package instead.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics.spi.Util -->
- <doc>
- <![CDATA[The Service Provider Interface for the Metrics API. This package provides
- an interface allowing a variety of metrics reporting implementations to be
- plugged in to the Metrics API. Examples of such implementations can be found
- in the packages <code>org.apache.hadoop.metrics.file</code> and
- <code>org.apache.hadoop.metrics.ganglia</code>.<p/>
- Plugging in an implementation involves writing a concrete subclass of
- <code>AbstractMetricsContext</code>. The subclass should get its
- configuration information using the <code>getAttribute(<i>attributeName</i>)</code>
- method.]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.metrics2">
- <!-- start class org.apache.hadoop.metrics2.AbstractMetric -->
- <class name="AbstractMetric" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsInfo"/>
- <constructor name="AbstractMetric" type="org.apache.hadoop.metrics2.MetricsInfo"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the metric
- @param info about the metric]]>
- </doc>
- </constructor>
- <method name="name" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="description" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="info" return="org.apache.hadoop.metrics2.MetricsInfo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="value" return="java.lang.Number"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the value of the metric
- @return the value of the metric]]>
- </doc>
- </method>
- <method name="type" return="org.apache.hadoop.metrics2.MetricType"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the type of the metric
- @return the type of the metric]]>
- </doc>
- </method>
- <method name="visit"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="visitor" type="org.apache.hadoop.metrics2.MetricsVisitor"/>
- <doc>
- <![CDATA[Accept a visitor interface
- @param visitor of the metric]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[The immutable metric]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.AbstractMetric -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsCollector -->
- <interface name="MetricsCollector" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="addRecord" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Add a metrics record
- @param name of the record
- @return a metrics record builder for the record]]>
- </doc>
- </method>
- <method name="addRecord" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <doc>
- <![CDATA[Add a metrics record
- @param info of the record
- @return a metrics record builder for the record]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The metrics collector interface]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsCollector -->
- <!-- start class org.apache.hadoop.metrics2.MetricsException -->
- <class name="MetricsException" extends="java.lang.RuntimeException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MetricsException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the exception with a message
- @param message for the exception]]>
- </doc>
- </constructor>
- <constructor name="MetricsException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the exception with a message and a cause
- @param message for the exception
- @param cause of the exception]]>
- </doc>
- </constructor>
- <constructor name="MetricsException" type="java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the exception with a cause
- @param cause of the exception]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[A general metrics exception wrapper]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.MetricsException -->
- <!-- start class org.apache.hadoop.metrics2.MetricsFilter -->
- <class name="MetricsFilter" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsPlugin"/>
- <constructor name="MetricsFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="accepts" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Whether to accept the name
- @param name to filter on
- @return true to accept; false otherwise.]]>
- </doc>
- </method>
- <method name="accepts" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="org.apache.hadoop.metrics2.MetricsTag"/>
- <doc>
- <![CDATA[Whether to accept the tag
- @param tag to filter on
- @return true to accept; false otherwise]]>
- </doc>
- </method>
- <method name="accepts" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tags" type="java.lang.Iterable"/>
- <doc>
- <![CDATA[Whether to accept the tags
- @param tags to filter on
- @return true to accept; false otherwise]]>
- </doc>
- </method>
- <method name="accepts" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- <doc>
- <![CDATA[Whether to accept the record
- @param record to filter on
- @return true to accept; false otherwise.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The metrics filter interface]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.MetricsFilter -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsInfo -->
- <interface name="MetricsInfo" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="name" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the name of the metric/tag]]>
- </doc>
- </method>
- <method name="description" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the description of the metric/tag]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Interface to provide immutable meta info for metrics]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsInfo -->
- <!-- start class org.apache.hadoop.metrics2.MetricsJsonBuilder -->
- <class name="MetricsJsonBuilder" extends="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MetricsJsonBuilder" type="org.apache.hadoop.metrics2.MetricsCollector"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Build an instance.
- @param parent parent collector. Unused in this instance; only used for
- the {@link #parent()} method]]>
- </doc>
- </constructor>
- <method name="tag" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="java.lang.String"/>
- </method>
- <method name="add" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="org.apache.hadoop.metrics2.MetricsTag"/>
- </method>
- <method name="add" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metric" type="org.apache.hadoop.metrics2.AbstractMetric"/>
- </method>
- <method name="setContext" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.lang.String"/>
- </method>
- <method name="addCounter" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- </method>
- <method name="addCounter" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="float"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="double"/>
- </method>
- <method name="parent" return="org.apache.hadoop.metrics2.MetricsCollector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Build a JSON dump of the metrics.
- The {@link #toString()} operator dumps out all values collected.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.MetricsJsonBuilder -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsPlugin -->
- <interface name="MetricsPlugin" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.commons.configuration.SubsetConfiguration"/>
- <doc>
- <![CDATA[Initialize the plugin
- @param conf the configuration object for the plugin]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The plugin interface for the metrics framework]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsPlugin -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsRecord -->
- <interface name="MetricsRecord" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="timestamp" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the timestamp of the metrics
- @return the timestamp]]>
- </doc>
- </method>
- <method name="name" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the record name]]>
- </doc>
- </method>
- <method name="description" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the description of the record]]>
- </doc>
- </method>
- <method name="context" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the context name of the record]]>
- </doc>
- </method>
- <method name="tags" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the tags of the record
- Note: returning a collection instead of iterable as we
- need to use tags as keys (hence Collection#hashCode etc.) in maps
- @return an unmodifiable collection of tags]]>
- </doc>
- </method>
- <method name="metrics" return="java.lang.Iterable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the metrics of the record
- @return an immutable iterable interface for metrics]]>
- </doc>
- </method>
- <doc>
- <![CDATA[An immutable snapshot of metrics with a timestamp]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsRecord -->
- <!-- start class org.apache.hadoop.metrics2.MetricsRecordBuilder -->
- <class name="MetricsRecordBuilder" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MetricsRecordBuilder"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="tag" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Add a metrics tag
- @param info metadata of the tag
- @param value of the tag
- @return self]]>
- </doc>
- </method>
- <method name="add" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="org.apache.hadoop.metrics2.MetricsTag"/>
- <doc>
- <![CDATA[Add an immutable metrics tag object
- @param tag a pre-made tag object (potentially save an object construction)
- @return self]]>
- </doc>
- </method>
- <method name="add" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metric" type="org.apache.hadoop.metrics2.AbstractMetric"/>
- <doc>
- <![CDATA[Add a pre-made immutable metric object
- @param metric the pre-made metric to save an object construction
- @return self]]>
- </doc>
- </method>
- <method name="setContext" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Set the context tag
- @param value of the context
- @return self]]>
- </doc>
- </method>
- <method name="addCounter" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Add an integer metric
- @param info metadata of the metric
- @param value of the metric
- @return self]]>
- </doc>
- </method>
- <method name="addCounter" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Add an long metric
- @param info metadata of the metric
- @param value of the metric
- @return self]]>
- </doc>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Add a integer gauge metric
- @param info metadata of the metric
- @param value of the metric
- @return self]]>
- </doc>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Add a long gauge metric
- @param info metadata of the metric
- @param value of the metric
- @return self]]>
- </doc>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="float"/>
- <doc>
- <![CDATA[Add a float gauge metric
- @param info metadata of the metric
- @param value of the metric
- @return self]]>
- </doc>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="double"/>
- <doc>
- <![CDATA[Add a double gauge metric
- @param info metadata of the metric
- @param value of the metric
- @return self]]>
- </doc>
- </method>
- <method name="parent" return="org.apache.hadoop.metrics2.MetricsCollector"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the parent metrics collector object]]>
- </doc>
- </method>
- <method name="endRecord" return="org.apache.hadoop.metrics2.MetricsCollector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Syntactic sugar to add multiple records in a collector in a one liner.
- @return the parent metrics collector object]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The metrics record builder interface]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.MetricsRecordBuilder -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsSink -->
- <interface name="MetricsSink" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsPlugin"/>
- <method name="putMetrics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- <doc>
- <![CDATA[Put a metrics record in the sink
- @param record the record to put]]>
- </doc>
- </method>
- <method name="flush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Flush any buffered metrics]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The metrics sink interface. <p>
- Implementations of this interface consume the {@link MetricsRecord} generated
- from {@link MetricsSource}. It registers with {@link MetricsSystem} which
- periodically pushes the {@link MetricsRecord} to the sink using
- {@link #putMetrics(MetricsRecord)} method. If the implementing class also
- implements {@link Closeable}, then the MetricsSystem will close the sink when
- it is stopped.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsSink -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsSource -->
- <interface name="MetricsSource" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getMetrics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="collector" type="org.apache.hadoop.metrics2.MetricsCollector"/>
- <param name="all" type="boolean"/>
- <doc>
- <![CDATA[Get metrics from the source
- @param collector to contain the resulting metrics snapshot
- @param all if true, return all metrics even if unchanged.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The metrics source interface]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsSource -->
- <!-- start class org.apache.hadoop.metrics2.MetricsSystem -->
- <class name="MetricsSystem" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsSystemMXBean"/>
- <constructor name="MetricsSystem"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="unregisterSource"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Unregister a metrics source
- @param name of the source. This is the name you use to call register()]]>
- </doc>
- </method>
- <method name="register" return="T"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="source" type="T"/>
- <doc>
- <![CDATA[Register a metrics source (deriving name and description from the object)
- @param <T> the actual type of the source object
- @param source object to register
- @return the source object
- @exception MetricsException]]>
- </doc>
- </method>
- <method name="register" return="T"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="source" type="T"/>
- <doc>
- <![CDATA[Register a metrics source
- @param <T> the actual type of the source object
- @param source object to register
- @param name of the source. Must be unique or null (then extracted from
- the annotations of the source object.)
- @param desc the description of the source (or null. See above.)
- @return the source object
- @exception MetricsException]]>
- </doc>
- </method>
- <method name="register"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="callback" type="org.apache.hadoop.metrics2.MetricsSystem.Callback"/>
- <doc>
- <![CDATA[Register a callback interface for JMX events
- @param callback the callback object implementing the MBean interface.]]>
- </doc>
- </method>
- <method name="publishMetricsNow"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Requests an immediate publish of all metrics from sources to sinks.
-
- This is a "soft" request: the expectation is that a best effort will be
- done to synchronously snapshot the metrics from all the sources and put
- them in all the sinks (including flushing the sinks) before returning to
- the caller. If this can't be accomplished in reasonable time it's OK to
- return to the caller before everything is done.]]>
- </doc>
- </method>
- <method name="shutdown" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Shutdown the metrics system completely (usually during server shutdown.)
- The MetricsSystemMXBean will be unregistered.
- @return true if shutdown completed]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The metrics system interface]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.MetricsSystem -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsSystemMXBean -->
- <interface name="MetricsSystemMXBean" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="start"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Start the metrics system
- @throws MetricsException]]>
- </doc>
- </method>
- <method name="stop"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stop the metrics system
- @throws MetricsException]]>
- </doc>
- </method>
- <method name="startMetricsMBeans"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Start metrics MBeans
- @throws MetricsException]]>
- </doc>
- </method>
- <method name="stopMetricsMBeans"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stop metrics MBeans.
- Note, it doesn't stop the metrics system control MBean,
- i.e this interface.
- @throws MetricsException]]>
- </doc>
- </method>
- <method name="currentConfig" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the current config
- Avoided getConfig, as it'll turn into a "Config" attribute,
- which doesn't support multiple line values in jconsole.
- @throws MetricsException]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The JMX interface to the metrics system]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsSystemMXBean -->
- <!-- start class org.apache.hadoop.metrics2.MetricsTag -->
- <class name="MetricsTag" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsInfo"/>
- <constructor name="MetricsTag" type="org.apache.hadoop.metrics2.MetricsInfo, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the tag with name, description and value
- @param info of the tag
- @param value of the tag]]>
- </doc>
- </constructor>
- <method name="name" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="description" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="info" return="org.apache.hadoop.metrics2.MetricsInfo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the info object of the tag]]>
- </doc>
- </method>
- <method name="value" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the value of the tag
- @return the value]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Immutable tag for metrics (for grouping on host/queue/username etc.)]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.MetricsTag -->
- <!-- start class org.apache.hadoop.metrics2.MetricStringBuilder -->
- <class name="MetricStringBuilder" extends="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MetricStringBuilder" type="org.apache.hadoop.metrics2.MetricsCollector, java.lang.String, java.lang.String, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Build an instance.
- @param parent parent collector. Unused in this instance; only used for
- the {@link #parent()} method
- @param prefix string before each entry
- @param separator separator between name and value
- @param suffix suffix after each entry]]>
- </doc>
- </constructor>
- <method name="add" return="org.apache.hadoop.metrics2.MetricStringBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="java.lang.Object"/>
- </method>
- <method name="tuple" return="org.apache.hadoop.metrics2.MetricStringBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Add any key,val pair to the string, between the prefix and suffix,
- separated by the separator.
- @param key key
- @param value value
- @return this instance]]>
- </doc>
- </method>
- <method name="tag" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="java.lang.String"/>
- </method>
- <method name="add" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="org.apache.hadoop.metrics2.MetricsTag"/>
- </method>
- <method name="add" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metric" type="org.apache.hadoop.metrics2.AbstractMetric"/>
- </method>
- <method name="setContext" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="java.lang.String"/>
- </method>
- <method name="addCounter" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- </method>
- <method name="addCounter" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="float"/>
- </method>
- <method name="addGauge" return="org.apache.hadoop.metrics2.MetricsRecordBuilder"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="double"/>
- </method>
- <method name="parent" return="org.apache.hadoop.metrics2.MetricsCollector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Build a string dump of the metrics.
- The {@link #toString()} operator dumps out all values collected.
- Every entry is formatted as
- {@code prefix + name + separator + value + suffix}]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.MetricStringBuilder -->
- <!-- start interface org.apache.hadoop.metrics2.MetricsVisitor -->
- <interface name="MetricsVisitor" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="gauge"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Callback for integer value gauges
- @param info the metric info
- @param value of the metric]]>
- </doc>
- </method>
- <method name="gauge"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Callback for long value gauges
- @param info the metric info
- @param value of the metric]]>
- </doc>
- </method>
- <method name="gauge"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="float"/>
- <doc>
- <![CDATA[Callback for float value gauges
- @param info the metric info
- @param value of the metric]]>
- </doc>
- </method>
- <method name="gauge"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="double"/>
- <doc>
- <![CDATA[Callback for double value gauges
- @param info the metric info
- @param value of the metric]]>
- </doc>
- </method>
- <method name="counter"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Callback for integer value counters
- @param info the metric info
- @param value of the metric]]>
- </doc>
- </method>
- <method name="counter"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Callback for long value counters
- @param info the metric info
- @param value of the metric]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A visitor interface for metrics]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.metrics2.MetricsVisitor -->
- </package>
- <package name="org.apache.hadoop.metrics2.annotation">
- <!-- start class org.apache.hadoop.metrics2.annotation.Metric -->
- <class name="Metric" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.lang.annotation.Annotation"/>
- <doc>
- <![CDATA[Annotation interface for a single metric]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.annotation.Metric -->
- <!-- start class org.apache.hadoop.metrics2.annotation.Metrics -->
- <class name="Metrics" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.lang.annotation.Annotation"/>
- <doc>
- <![CDATA[Annotation interface for a group of metrics]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.annotation.Metrics -->
- </package>
- <package name="org.apache.hadoop.metrics2.filter">
- <!-- start class org.apache.hadoop.metrics2.filter.GlobFilter -->
- <class name="GlobFilter" extends="org.apache.hadoop.metrics2.filter.AbstractPatternFilter"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="GlobFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="compile" return="java.util.regex.Pattern"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- </method>
- <doc>
- <![CDATA[A glob pattern filter for metrics.
- The class name is used in metrics config files]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.filter.GlobFilter -->
- <!-- start class org.apache.hadoop.metrics2.filter.RegexFilter -->
- <class name="RegexFilter" extends="org.apache.hadoop.metrics2.filter.AbstractPatternFilter"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="RegexFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="compile" return="java.util.regex.Pattern"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- </method>
- <doc>
- <![CDATA[A regex pattern filter for metrics]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.filter.RegexFilter -->
- </package>
- <package name="org.apache.hadoop.metrics2.lib">
- <!-- start class org.apache.hadoop.metrics2.lib.DefaultMetricsSystem -->
- <class name="DefaultMetricsSystem" extends="java.lang.Enum"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.metrics2.lib.DefaultMetricsSystem[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.metrics2.lib.DefaultMetricsSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="initialize" return="org.apache.hadoop.metrics2.MetricsSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="prefix" type="java.lang.String"/>
- <doc>
- <![CDATA[Convenience method to initialize the metrics system
- @param prefix for the metrics system configuration
- @return the metrics system instance]]>
- </doc>
- </method>
- <method name="instance" return="org.apache.hadoop.metrics2.MetricsSystem"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the metrics system object]]>
- </doc>
- </method>
- <method name="shutdown"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Shutdown the metrics system]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The default metrics system singleton]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.DefaultMetricsSystem -->
- <!-- start class org.apache.hadoop.metrics2.lib.Interns -->
- <class name="Interns" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="Interns"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="info" return="org.apache.hadoop.metrics2.MetricsInfo"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="description" type="java.lang.String"/>
- <doc>
- <![CDATA[Get a metric info object.
- @param name Name of metric info object
- @param description Description of metric info object
- @return an interned metric info object]]>
- </doc>
- </method>
- <method name="tag" return="org.apache.hadoop.metrics2.MetricsTag"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Get a metrics tag.
- @param info of the tag
- @param value of the tag
- @return an interned metrics tag]]>
- </doc>
- </method>
- <method name="tag" return="org.apache.hadoop.metrics2.MetricsTag"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="description" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Get a metrics tag.
- @param name of the tag
- @param description of the tag
- @param value of the tag
- @return an interned metrics tag]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Helpers to create interned metrics info.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.Interns -->
- <!-- start class org.apache.hadoop.metrics2.lib.MetricsRegistry -->
- <class name="MetricsRegistry" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MetricsRegistry" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the registry with a record name
- @param name of the record of the metrics]]>
- </doc>
- </constructor>
- <constructor name="MetricsRegistry" type="org.apache.hadoop.metrics2.MetricsInfo"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the registry with a metadata object
- @param info the info object for the metrics record/group]]>
- </doc>
- </constructor>
- <method name="info" return="org.apache.hadoop.metrics2.MetricsInfo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return the info object of the metrics registry]]>
- </doc>
- </method>
- <method name="get" return="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get a metric by name
- @param name of the metric
- @return the metric object]]>
- </doc>
- </method>
- <method name="getTag" return="org.apache.hadoop.metrics2.MetricsTag"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Get a tag by name
- @param name of the tag
- @return the tag object]]>
- </doc>
- </method>
- <method name="newCounter" return="org.apache.hadoop.metrics2.lib.MutableCounterInt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="iVal" type="int"/>
- <doc>
- <![CDATA[Create a mutable integer counter
- @param name of the metric
- @param desc metric description
- @param iVal initial value
- @return a new counter object]]>
- </doc>
- </method>
- <method name="newCounter" return="org.apache.hadoop.metrics2.lib.MutableCounterInt"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="iVal" type="int"/>
- <doc>
- <![CDATA[Create a mutable integer counter
- @param info metadata of the metric
- @param iVal initial value
- @return a new counter object]]>
- </doc>
- </method>
- <method name="newCounter" return="org.apache.hadoop.metrics2.lib.MutableCounterLong"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="iVal" type="long"/>
- <doc>
- <![CDATA[Create a mutable long integer counter
- @param name of the metric
- @param desc metric description
- @param iVal initial value
- @return a new counter object]]>
- </doc>
- </method>
- <method name="newCounter" return="org.apache.hadoop.metrics2.lib.MutableCounterLong"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="iVal" type="long"/>
- <doc>
- <![CDATA[Create a mutable long integer counter
- @param info metadata of the metric
- @param iVal initial value
- @return a new counter object]]>
- </doc>
- </method>
- <method name="newGauge" return="org.apache.hadoop.metrics2.lib.MutableGaugeInt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="iVal" type="int"/>
- <doc>
- <![CDATA[Create a mutable integer gauge
- @param name of the metric
- @param desc metric description
- @param iVal initial value
- @return a new gauge object]]>
- </doc>
- </method>
- <method name="newGauge" return="org.apache.hadoop.metrics2.lib.MutableGaugeInt"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="iVal" type="int"/>
- <doc>
- <![CDATA[Create a mutable integer gauge
- @param info metadata of the metric
- @param iVal initial value
- @return a new gauge object]]>
- </doc>
- </method>
- <method name="newGauge" return="org.apache.hadoop.metrics2.lib.MutableGaugeLong"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="iVal" type="long"/>
- <doc>
- <![CDATA[Create a mutable long integer gauge
- @param name of the metric
- @param desc metric description
- @param iVal initial value
- @return a new gauge object]]>
- </doc>
- </method>
- <method name="newGauge" return="org.apache.hadoop.metrics2.lib.MutableGaugeLong"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="iVal" type="long"/>
- <doc>
- <![CDATA[Create a mutable long integer gauge
- @param info metadata of the metric
- @param iVal initial value
- @return a new gauge object]]>
- </doc>
- </method>
- <method name="newGauge" return="org.apache.hadoop.metrics2.lib.MutableGaugeFloat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="iVal" type="float"/>
- <doc>
- <![CDATA[Create a mutable float gauge
- @param name of the metric
- @param desc metric description
- @param iVal initial value
- @return a new gauge object]]>
- </doc>
- </method>
- <method name="newGauge" return="org.apache.hadoop.metrics2.lib.MutableGaugeFloat"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="iVal" type="float"/>
- <doc>
- <![CDATA[Create a mutable float gauge
- @param info metadata of the metric
- @param iVal initial value
- @return a new gauge object]]>
- </doc>
- </method>
- <method name="newQuantiles" return="org.apache.hadoop.metrics2.lib.MutableQuantiles"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="sampleName" type="java.lang.String"/>
- <param name="valueName" type="java.lang.String"/>
- <param name="interval" type="int"/>
- <doc>
- <![CDATA[Create a mutable metric that estimates quantiles of a stream of values
- @param name of the metric
- @param desc metric description
- @param sampleName of the metric (e.g., "Ops")
- @param valueName of the metric (e.g., "Time" or "Latency")
- @param interval rollover interval of estimator in seconds
- @return a new quantile estimator object
- @throws MetricsException if interval is not a positive integer]]>
- </doc>
- </method>
- <method name="newStat" return="org.apache.hadoop.metrics2.lib.MutableStat"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="sampleName" type="java.lang.String"/>
- <param name="valueName" type="java.lang.String"/>
- <param name="extended" type="boolean"/>
- <doc>
- <![CDATA[Create a mutable metric with stats
- @param name of the metric
- @param desc metric description
- @param sampleName of the metric (e.g., "Ops")
- @param valueName of the metric (e.g., "Time" or "Latency")
- @param extended produce extended stat (stdev, min/max etc.) if true.
- @return a new mutable stat metric object]]>
- </doc>
- </method>
- <method name="newStat" return="org.apache.hadoop.metrics2.lib.MutableStat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="sampleName" type="java.lang.String"/>
- <param name="valueName" type="java.lang.String"/>
- <doc>
- <![CDATA[Create a mutable metric with stats
- @param name of the metric
- @param desc metric description
- @param sampleName of the metric (e.g., "Ops")
- @param valueName of the metric (e.g., "Time" or "Latency")
- @return a new mutable metric object]]>
- </doc>
- </method>
- <method name="newRate" return="org.apache.hadoop.metrics2.lib.MutableRate"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Create a mutable rate metric
- @param name of the metric
- @return a new mutable metric object]]>
- </doc>
- </method>
- <method name="newRate" return="org.apache.hadoop.metrics2.lib.MutableRate"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="description" type="java.lang.String"/>
- <doc>
- <![CDATA[Create a mutable rate metric
- @param name of the metric
- @param description of the metric
- @return a new mutable rate metric object]]>
- </doc>
- </method>
- <method name="newRate" return="org.apache.hadoop.metrics2.lib.MutableRate"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="desc" type="java.lang.String"/>
- <param name="extended" type="boolean"/>
- <doc>
- <![CDATA[Create a mutable rate metric (for throughput measurement)
- @param name of the metric
- @param desc description
- @param extended produce extended stat (stdev/min/max etc.) if true
- @return a new mutable rate metric object]]>
- </doc>
- </method>
- <method name="newRatesWithAggregation" return="org.apache.hadoop.metrics2.lib.MutableRatesWithAggregation"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="newMutableRollingAverages" return="org.apache.hadoop.metrics2.lib.MutableRollingAverages"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="valueName" type="java.lang.String"/>
- </method>
- <method name="add"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Add sample to a stat metric by name.
- @param name of the metric
- @param value of the snapshot to add]]>
- </doc>
- </method>
- <method name="setContext" return="org.apache.hadoop.metrics2.lib.MetricsRegistry"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Set the metrics context tag
- @param name of the context
- @return the registry itself as a convenience]]>
- </doc>
- </method>
- <method name="tag" return="org.apache.hadoop.metrics2.lib.MetricsRegistry"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="description" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <doc>
- <![CDATA[Add a tag to the metrics
- @param name of the tag
- @param description of the tag
- @param value of the tag
- @return the registry (for keep adding tags)]]>
- </doc>
- </method>
- <method name="tag" return="org.apache.hadoop.metrics2.lib.MetricsRegistry"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="description" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- <param name="override" type="boolean"/>
- <doc>
- <![CDATA[Add a tag to the metrics
- @param name of the tag
- @param description of the tag
- @param value of the tag
- @param override existing tag if true
- @return the registry (for keep adding tags)]]>
- </doc>
- </method>
- <method name="tag" return="org.apache.hadoop.metrics2.lib.MetricsRegistry"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="java.lang.String"/>
- <param name="override" type="boolean"/>
- <doc>
- <![CDATA[Add a tag to the metrics
- @param info metadata of the tag
- @param value of the tag
- @param override existing tag if true
- @return the registry (for keep adding tags etc.)]]>
- </doc>
- </method>
- <method name="tag" return="org.apache.hadoop.metrics2.lib.MetricsRegistry"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="info" type="org.apache.hadoop.metrics2.MetricsInfo"/>
- <param name="value" type="java.lang.String"/>
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- <doc>
- <![CDATA[Sample all the mutable metrics and put the snapshot in the builder
- @param builder to contain the metrics snapshot
- @param all get all the metrics even if the values are not changed.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[An optional metrics registry class for creating and maintaining a
- collection of MetricsMutables, making writing metrics source easier.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MetricsRegistry -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableCounter -->
- <class name="MutableCounter" extends="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MutableCounter" type="org.apache.hadoop.metrics2.MetricsInfo"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <method name="info" return="org.apache.hadoop.metrics2.MetricsInfo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Increment the metric value by 1.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The mutable counter (monotonically increasing) metric interface]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableCounter -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableCounterInt -->
- <class name="MutableCounterInt" extends="org.apache.hadoop.metrics2.lib.MutableCounter"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delta" type="int"/>
- <doc>
- <![CDATA[Increment the value by a delta
- @param delta of the increment]]>
- </doc>
- </method>
- <method name="value" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <doc>
- <![CDATA[A mutable int counter for implementing metrics sources]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableCounterInt -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableCounterLong -->
- <class name="MutableCounterLong" extends="org.apache.hadoop.metrics2.lib.MutableCounter"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MutableCounterLong" type="org.apache.hadoop.metrics2.MetricsInfo, long"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delta" type="long"/>
- <doc>
- <![CDATA[Increment the value by a delta
- @param delta of the increment]]>
- </doc>
- </method>
- <method name="value" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <doc>
- <![CDATA[A mutable long counter]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableCounterLong -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableGauge -->
- <class name="MutableGauge" extends="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MutableGauge" type="org.apache.hadoop.metrics2.MetricsInfo"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <method name="info" return="org.apache.hadoop.metrics2.MetricsInfo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Increment the value of the metric by 1]]>
- </doc>
- </method>
- <method name="decr"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Decrement the value of the metric by 1]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The mutable gauge metric interface]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableGauge -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableGaugeInt -->
- <class name="MutableGaugeInt" extends="org.apache.hadoop.metrics2.lib.MutableGauge"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="value" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delta" type="int"/>
- <doc>
- <![CDATA[Increment by delta
- @param delta of the increment]]>
- </doc>
- </method>
- <method name="decr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="decr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delta" type="int"/>
- <doc>
- <![CDATA[decrement by delta
- @param delta of the decrement]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="int"/>
- <doc>
- <![CDATA[Set the value of the metric
- @param value to set]]>
- </doc>
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <doc>
- <![CDATA[A mutable int gauge]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableGaugeInt -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableGaugeLong -->
- <class name="MutableGaugeLong" extends="org.apache.hadoop.metrics2.lib.MutableGauge"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="value" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delta" type="long"/>
- <doc>
- <![CDATA[Increment by delta
- @param delta of the increment]]>
- </doc>
- </method>
- <method name="decr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="decr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delta" type="long"/>
- <doc>
- <![CDATA[decrement by delta
- @param delta of the decrement]]>
- </doc>
- </method>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Set the value of the metric
- @param value to set]]>
- </doc>
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <doc>
- <![CDATA[A mutable long gauge]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableGaugeLong -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableMetric -->
- <class name="MutableMetric" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MutableMetric"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="snapshot"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- <doc>
- <![CDATA[Get a snapshot of the metric
- @param builder the metrics record builder
- @param all if true, snapshot unchanged metrics as well]]>
- </doc>
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <doc>
- <![CDATA[Get a snapshot of metric if changed
- @param builder the metrics record builder]]>
- </doc>
- </method>
- <method name="setChanged"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Set the changed flag in mutable operations]]>
- </doc>
- </method>
- <method name="clearChanged"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Clear the changed flag in the snapshot operations]]>
- </doc>
- </method>
- <method name="changed" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return true if metric is changed since last snapshot/snapshot]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The mutable metric interface]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableMetric -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableQuantiles -->
- <class name="MutableQuantiles" extends="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MutableQuantiles" type="java.lang.String, java.lang.String, java.lang.String, java.lang.String, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Instantiates a new {@link MutableQuantiles} for a metric that rolls itself
- over on the specified time interval.
-
- @param name
- of the metric
- @param description
- long-form textual description of the metric
- @param sampleName
- type of items in the stream (e.g., "Ops")
- @param valueName
- type of the values
- @param interval
- rollover interval (in seconds) of the estimator]]>
- </doc>
- </constructor>
- <method name="snapshot"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <method name="add"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="long"/>
- </method>
- <method name="getInterval" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="stop"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getEstimator" return="org.apache.hadoop.metrics2.util.QuantileEstimator"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the quantile estimator.
- @return the quantile estimator]]>
- </doc>
- </method>
- <method name="setEstimator"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="quantileEstimator" type="org.apache.hadoop.metrics2.util.QuantileEstimator"/>
- </method>
- <field name="quantiles" type="org.apache.hadoop.metrics2.util.Quantile[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="previousSnapshot" type="java.util.Map"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Watches a stream of long values, maintaining online estimates of specific
- quantiles with provably low error bounds. This is particularly useful for
- accurate high-percentile (e.g. 95th, 99th) latency metrics.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableQuantiles -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableRate -->
- <class name="MutableRate" extends="org.apache.hadoop.metrics2.lib.MutableStat"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[A convenient mutable metric for throughput measurement]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableRate -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableRates -->
- <class name="MutableRates" extends="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="protocol" type="java.lang.Class"/>
- <doc>
- <![CDATA[Initialize the registry with all the methods in a protocol
- so they all show up in the first snapshot.
- Convenient for JMX implementations.
- @param protocol the protocol class]]>
- </doc>
- </method>
- <method name="add"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="elapsed" type="long"/>
- <doc>
- <![CDATA[Add a rate sample for a rate metric
- @param name of the rate metric
- @param elapsed time]]>
- </doc>
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rb" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <doc>
- <![CDATA[Helper class to manage a group of mutable rate metrics
- This class synchronizes all accesses to the metrics it
- contains, so it should not be used in situations where
- there is high contention on the metrics.
- {@link MutableRatesWithAggregation} is preferable in that
- situation.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableRates -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableRatesWithAggregation -->
- <class name="MutableRatesWithAggregation" extends="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MutableRatesWithAggregation"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="protocol" type="java.lang.Class"/>
- <doc>
- <![CDATA[Initialize the registry with all the methods in a protocol
- so they all show up in the first snapshot.
- Convenient for JMX implementations.
- @param protocol the protocol class]]>
- </doc>
- </method>
- <method name="add"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="elapsed" type="long"/>
- <doc>
- <![CDATA[Add a rate sample for a rate metric.
- @param name of the rate metric
- @param elapsed time]]>
- </doc>
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rb" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <doc>
- <![CDATA[Helper class to manage a group of mutable rate metrics.
- Each thread will maintain a local rate count, and upon snapshot,
- these values will be aggregated into a global rate. This class
- should only be used for long running threads, as any metrics
- produced between the last snapshot and the death of a thread
- will be lost. This allows for significantly higher concurrency
- than {@link MutableRates}. See HADOOP-24420.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableRatesWithAggregation -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableRollingAverages -->
- <class name="MutableRollingAverages" extends="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.io.Closeable"/>
- <constructor name="MutableRollingAverages" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor for {@link MutableRollingAverages}.
- @param metricValueName]]>
- </doc>
- </constructor>
- <method name="snapshot"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <method name="collectThreadLocalStates"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Collects states maintained in {@link ThreadLocal}, if any.]]>
- </doc>
- </method>
- <method name="add"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="value" type="long"/>
- <doc>
- <![CDATA[@param name
- name of metric
- @param value
- value of metric]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getStats" return="java.util.Map"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="minSamples" type="long"/>
- <doc>
- <![CDATA[Retrieve a map of metric name -> (aggregate).
- Filter out entries that don't have at least minSamples.
- @return a map of peer DataNode Id to the average latency to that
- node seen over the measurement period.]]>
- </doc>
- </method>
- <method name="setRecordValidityMs"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Use for test only.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[<p>
- This class maintains a group of rolling average metrics. It implements the
- algorithm of rolling average, i.e. a number of sliding windows are kept to
- roll over and evict old subsets of samples. Each window has a subset of
- samples in a stream, where sub-sum and sub-total are collected. All sub-sums
- and sub-totals in all windows will be aggregated to final-sum and final-total
- used to compute final average, which is called rolling average.
- </p>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableRollingAverages -->
- <!-- start class org.apache.hadoop.metrics2.lib.MutableStat -->
- <class name="MutableStat" extends="org.apache.hadoop.metrics2.lib.MutableMetric"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MutableStat" type="java.lang.String, java.lang.String, java.lang.String, java.lang.String, boolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a sample statistics metric
- @param name of the metric
- @param description of the metric
- @param sampleName of the metric (e.g. "Ops")
- @param valueName of the metric (e.g. "Time", "Latency")
- @param extended create extended stats (stdev, min/max etc.) by default.]]>
- </doc>
- </constructor>
- <constructor name="MutableStat" type="java.lang.String, java.lang.String, java.lang.String, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a snapshot stat metric with extended stat off by default
- @param name of the metric
- @param description of the metric
- @param sampleName of the metric (e.g. "Ops")
- @param valueName of the metric (e.g. "Time", "Latency")]]>
- </doc>
- </constructor>
- <method name="setExtended"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="extended" type="boolean"/>
- <doc>
- <![CDATA[Set whether to display the extended stats (stdev, min/max etc.) or not
- @param extended enable/disable displaying extended stats]]>
- </doc>
- </method>
- <method name="setUpdateTimeStamp"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="updateTimeStamp" type="boolean"/>
- <doc>
- <![CDATA[Set whether to update the snapshot time or not.
- @param updateTimeStamp enable update stats snapshot timestamp]]>
- </doc>
- </method>
- <method name="add"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="numSamples" type="long"/>
- <param name="sum" type="long"/>
- <doc>
- <![CDATA[Add a number of samples and their sum to the running stat
- Note that although use of this method will preserve accurate mean values,
- large values for numSamples may result in inaccurate variance values due
- to the use of a single step of the Welford method for variance calculation.
- @param numSamples number of samples
- @param sum of the samples]]>
- </doc>
- </method>
- <method name="add"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="value" type="long"/>
- <doc>
- <![CDATA[Add a snapshot to the metric.
- @param value of the metric]]>
- </doc>
- </method>
- <method name="snapshot"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="builder" type="org.apache.hadoop.metrics2.MetricsRecordBuilder"/>
- <param name="all" type="boolean"/>
- </method>
- <method name="lastStat" return="org.apache.hadoop.metrics2.util.SampleStat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a SampleStat object that supports
- calls like StdDev and Mean.
- @return SampleStat]]>
- </doc>
- </method>
- <method name="resetMinMax"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reset the all time min max of the metric]]>
- </doc>
- </method>
- <method name="getSnapshotTimeStamp" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the SampleStat snapshot timestamp]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A mutable metric with stats.
- Useful for keeping throughput/latency stats.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.lib.MutableStat -->
- </package>
- <package name="org.apache.hadoop.metrics2.sink">
- <!-- start class org.apache.hadoop.metrics2.sink.FileSink -->
- <class name="FileSink" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsSink"/>
- <implements name="java.io.Closeable"/>
- <constructor name="FileSink"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.commons.configuration.SubsetConfiguration"/>
- </method>
- <method name="putMetrics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- </method>
- <method name="flush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A metrics sink that writes to a file]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.sink.FileSink -->
- <!-- start class org.apache.hadoop.metrics2.sink.GraphiteSink -->
- <class name="GraphiteSink" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsSink"/>
- <implements name="java.io.Closeable"/>
- <constructor name="GraphiteSink"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.commons.configuration.SubsetConfiguration"/>
- </method>
- <method name="putMetrics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- </method>
- <method name="flush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A metrics sink that writes to a Graphite server]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.sink.GraphiteSink -->
- <!-- start class org.apache.hadoop.metrics2.sink.RollingFileSystemSink -->
- <class name="RollingFileSystemSink" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsSink"/>
- <implements name="java.io.Closeable"/>
- <constructor name="RollingFileSystemSink"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an empty instance. Required for reflection.]]>
- </doc>
- </constructor>
- <constructor name="RollingFileSystemSink" type="long, long"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance for testing.
- @param flushIntervalMillis the roll interval in millis
- @param flushOffsetIntervalMillis the roll offset interval in millis]]>
- </doc>
- </constructor>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="metrics2Properties" type="org.apache.commons.configuration.SubsetConfiguration"/>
- </method>
- <method name="getRollInterval" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Extract the roll interval from the configuration and return it in
- milliseconds.
- @return the roll interval in millis]]>
- </doc>
- </method>
- <method name="updateFlushTime"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="now" type="java.util.Date"/>
- <doc>
- <![CDATA[Update the {@link #nextFlush} variable to the next flush time. Add
- an integer number of flush intervals, preserving the initial random offset.
- @param now the current time]]>
- </doc>
- </method>
- <method name="setInitialFlushTime"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="now" type="java.util.Date"/>
- <doc>
- <![CDATA[Set the {@link #nextFlush} variable to the initial flush time. The initial
- flush will be an integer number of flush intervals past the beginning of
- the current hour and will have a random offset added, up to
- {@link #rollOffsetIntervalMillis}. The initial flush will be a time in
- past that can be used from which to calculate future flush times.
- @param now the current time]]>
- </doc>
- </method>
- <method name="putMetrics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- </method>
- <method name="flush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <field name="source" type="java.lang.String"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="ignoreError" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="allowAppend" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="basePath" type="org.apache.hadoop.fs.Path"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="rollIntervalMillis" type="long"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="rollOffsetIntervalMillis" type="long"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="nextFlush" type="java.util.Calendar"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="forceFlush" type="boolean"
- transient="false" volatile="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="hasFlushed" type="boolean"
- transient="false" volatile="true"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="suppliedConf" type="org.apache.hadoop.conf.Configuration"
- transient="false" volatile="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="suppliedFilesystem" type="org.apache.hadoop.fs.FileSystem"
- transient="false" volatile="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[<p>This class is a metrics sink that uses
- {@link org.apache.hadoop.fs.FileSystem} to write the metrics logs. Every
- roll interval a new directory will be created under the path specified by the
- <code>basepath</code> property. All metrics will be logged to a file in the
- current interval's directory in a file named <hostname>.log, where
- <hostname> is the name of the host on which the metrics logging
- process is running. The base path is set by the
- <code><prefix>.sink.<instance>.basepath</code> property. The
- time zone used to create the current interval's directory name is GMT. If
- the <code>basepath</code> property isn't specified, it will default to
- "/tmp", which is the temp directory on whatever default file
- system is configured for the cluster.</p>
- <p>The <code><prefix>.sink.<instance>.ignore-error</code>
- property controls whether an exception is thrown when an error is encountered
- writing a log file. The default value is <code>true</code>. When set to
- <code>false</code>, file errors are quietly swallowed.</p>
- <p>The <code>roll-interval</code> property sets the amount of time before
- rolling the directory. The default value is 1 hour. The roll interval may
- not be less than 1 minute. The property's value should be given as
- <i>number unit</i>, where <i>number</i> is an integer value, and
- <i>unit</i> is a valid unit. Valid units are <i>minute</i>, <i>hour</i>,
- and <i>day</i>. The units are case insensitive and may be abbreviated or
- plural. If no units are specified, hours are assumed. For example,
- "2", "2h", "2 hour", and
- "2 hours" are all valid ways to specify two hours.</p>
- <p>The <code>roll-offset-interval-millis</code> property sets the upper
- bound on a random time interval (in milliseconds) that is used to delay
- before the initial roll. All subsequent rolls will happen an integer
- number of roll intervals after the initial roll, hence retaining the original
- offset. The purpose of this property is to insert some variance in the roll
- times so that large clusters using this sink on every node don't cause a
- performance impact on HDFS by rolling simultaneously. The default value is
- 30000 (30s). When writing to HDFS, as a rule of thumb, the roll offset in
- millis should be no less than the number of sink instances times 5.
- <p>The primary use of this class is for logging to HDFS. As it uses
- {@link org.apache.hadoop.fs.FileSystem} to access the target file system,
- however, it can be used to write to the local file system, Amazon S3, or any
- other supported file system. The base path for the sink will determine the
- file system used. An unqualified path will write to the default file system
- set by the configuration.</p>
- <p>Not all file systems support the ability to append to files. In file
- systems without the ability to append to files, only one writer can write to
- a file at a time. To allow for concurrent writes from multiple daemons on a
- single host, the <code>source</code> property is used to set unique headers
- for the log files. The property should be set to the name of
- the source daemon, e.g. <i>namenode</i>. The value of the
- <code>source</code> property should typically be the same as the property's
- prefix. If this property is not set, the source is taken to be
- <i>unknown</i>.</p>
- <p>Instead of appending to an existing file, by default the sink
- will create a new file with a suffix of ".<n>&quet;, where
- <i>n</i> is the next lowest integer that isn't already used in a file name,
- similar to the Hadoop daemon logs. NOTE: the file with the <b>highest</b>
- sequence number is the <b>newest</b> file, unlike the Hadoop daemon logs.</p>
- <p>For file systems that allow append, the sink supports appending to the
- existing file instead. If the <code>allow-append</code> property is set to
- true, the sink will instead append to the existing file on file systems that
- support appends. By default, the <code>allow-append</code> property is
- false.</p>
- <p>Note that when writing to HDFS with <code>allow-append</code> set to true,
- there is a minimum acceptable number of data nodes. If the number of data
- nodes drops below that minimum, the append will succeed, but reading the
- data will fail with an IOException in the DataStreamer class. The minimum
- number of data nodes required for a successful append is generally 2 or
- 3.</p>
- <p>Note also that when writing to HDFS, the file size information is not
- updated until the file is closed (at the end of the interval) even though
- the data is being written successfully. This is a known HDFS limitation that
- exists because of the performance cost of updating the metadata. See
- <a href="https://issues.apache.org/jira/browse/HDFS-5478">HDFS-5478</a>.</p>
- <p>When using this sink in a secure (Kerberos) environment, two additional
- properties must be set: <code>keytab-key</code> and
- <code>principal-key</code>. <code>keytab-key</code> should contain the key by
- which the keytab file can be found in the configuration, for example,
- <code>yarn.nodemanager.keytab</code>. <code>principal-key</code> should
- contain the key by which the principal can be found in the configuration,
- for example, <code>yarn.nodemanager.principal</code>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.sink.RollingFileSystemSink -->
- <!-- start class org.apache.hadoop.metrics2.sink.StatsDSink -->
- <class name="StatsDSink" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.metrics2.MetricsSink"/>
- <implements name="java.io.Closeable"/>
- <constructor name="StatsDSink"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.commons.configuration.SubsetConfiguration"/>
- </method>
- <method name="putMetrics"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="record" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- </method>
- <method name="writeMetric"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="line" type="java.lang.String"/>
- </method>
- <method name="flush"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[A metrics sink that writes metrics to a StatsD daemon.
- This sink will produce metrics of the form
- '[hostname].servicename.context.name.metricname:value|type'
- where hostname is optional. This is useful when sending to
- a daemon that is running on the localhost and will add the
- hostname to the metric (such as the
- <a href="https://collectd.org/">CollectD</a> StatsD plugin).
- <br/>
- To configure this plugin, you will need to add the following
- entries to your hadoop-metrics2.properties file:
- <br/>
- <pre>
- *.sink.statsd.class=org.apache.hadoop.metrics2.sink.StatsDSink
- [prefix].sink.statsd.server.host=
- [prefix].sink.statsd.server.port=
- [prefix].sink.statsd.skip.hostname=true|false (optional)
- [prefix].sink.statsd.service.name=NameNode (name you want for service)
- </pre>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.sink.StatsDSink -->
- </package>
- <package name="org.apache.hadoop.metrics2.sink.ganglia">
- </package>
- <package name="org.apache.hadoop.metrics2.source">
- </package>
- <package name="org.apache.hadoop.metrics2.util">
- <!-- start class org.apache.hadoop.metrics2.util.MBeans -->
- <class name="MBeans" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MBeans"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="register" return="javax.management.ObjectName"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="serviceName" type="java.lang.String"/>
- <param name="nameName" type="java.lang.String"/>
- <param name="theMbean" type="java.lang.Object"/>
- <doc>
- <![CDATA[Register the MBean using our standard MBeanName format
- "hadoop:service=<serviceName>,name=<nameName>"
- Where the <serviceName> and <nameName> are the supplied parameters
- @param serviceName
- @param nameName
- @param theMbean - the MBean to register
- @return the named used to register the MBean]]>
- </doc>
- </method>
- <method name="getMbeanNameService" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="objectName" type="javax.management.ObjectName"/>
- </method>
- <method name="getMbeanNameName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="objectName" type="javax.management.ObjectName"/>
- </method>
- <method name="unregister"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="mbeanName" type="javax.management.ObjectName"/>
- </method>
- <doc>
- <![CDATA[This util class provides a method to register an MBean using
- our standard naming convention as described in the doc
- for {link {@link #register(String, String, Object)}]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.util.MBeans -->
- <!-- start class org.apache.hadoop.metrics2.util.MetricsCache -->
- <class name="MetricsCache" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="MetricsCache"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="MetricsCache" type="int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a metrics cache
- @param maxRecsPerName limit of the number records per record name]]>
- </doc>
- </constructor>
- <method name="update" return="org.apache.hadoop.metrics2.util.MetricsCache.Record"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="mr" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- <param name="includingTags" type="boolean"/>
- <doc>
- <![CDATA[Update the cache and return the current cached record
- @param mr the update record
- @param includingTags cache tag values (for later lookup by name) if true
- @return the updated cache record]]>
- </doc>
- </method>
- <method name="update" return="org.apache.hadoop.metrics2.util.MetricsCache.Record"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="mr" type="org.apache.hadoop.metrics2.MetricsRecord"/>
- <doc>
- <![CDATA[Update the cache and return the current cache record
- @param mr the update record
- @return the updated cache record]]>
- </doc>
- </method>
- <method name="get" return="org.apache.hadoop.metrics2.util.MetricsCache.Record"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="tags" type="java.util.Collection"/>
- <doc>
- <![CDATA[Get the cached record
- @param name of the record
- @param tags of the record
- @return the cached record or null]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A metrics cache for sinks that don't support sparse updates.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.util.MetricsCache -->
- <!-- start class org.apache.hadoop.metrics2.util.Servers -->
- <class name="Servers" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="parse" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="specs" type="java.lang.String"/>
- <param name="defaultPort" type="int"/>
- <doc>
- <![CDATA[Parses a space and/or comma separated sequence of server specifications
- of the form <i>hostname</i> or <i>hostname:port</i>. If
- the specs string is null, defaults to localhost:defaultPort.
- @param specs server specs (see description)
- @param defaultPort the default port if not specified
- @return a list of InetSocketAddress objects.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Helpers to handle server addresses]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.metrics2.util.Servers -->
- </package>
- <package name="org.apache.hadoop.net">
- <!-- start class org.apache.hadoop.net.AbstractDNSToSwitchMapping -->
- <class name="AbstractDNSToSwitchMapping" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.net.DNSToSwitchMapping"/>
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="AbstractDNSToSwitchMapping"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an unconfigured instance]]>
- </doc>
- </constructor>
- <constructor name="AbstractDNSToSwitchMapping" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance, caching the configuration file.
- This constructor does not call {@link #setConf(Configuration)}; if
- a subclass extracts information in that method, it must call it explicitly.
- @param conf the configuration]]>
- </doc>
- </constructor>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="isSingleSwitch" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Predicate that indicates that the switch mapping is known to be
- single-switch. The base class returns false: it assumes all mappings are
- multi-rack. Subclasses may override this with methods that are more aware
- of their topologies.
- <p/>
- This method is used when parts of Hadoop need know whether to apply
- single rack vs multi-rack policies, such as during block placement.
- Such algorithms behave differently if they are on multi-switch systems.
- </p>
- @return true if the mapping thinks that it is on a single switch]]>
- </doc>
- </method>
- <method name="getSwitchMap" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get a copy of the map (for diagnostics)
- @return a clone of the map or null for none known]]>
- </doc>
- </method>
- <method name="dumpTopology" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Generate a string listing the switch mapping implementation,
- the mapping for every known node and the number of nodes and
- unique switches known about -each entry to a separate line.
- @return a string that can be presented to the ops team or used in
- debug messages.]]>
- </doc>
- </method>
- <method name="isSingleSwitchByScriptPolicy" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="isMappingSingleSwitch" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="mapping" type="org.apache.hadoop.net.DNSToSwitchMapping"/>
- <doc>
- <![CDATA[Query for a {@link DNSToSwitchMapping} instance being on a single
- switch.
- <p/>
- This predicate simply assumes that all mappings not derived from
- this class are multi-switch.
- @param mapping the mapping to query
- @return true if the base class says it is single switch, or the mapping
- is not derived from this class.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This is a base class for DNS to Switch mappings. <p/> It is not mandatory to
- derive {@link DNSToSwitchMapping} implementations from it, but it is strongly
- recommended, as it makes it easy for the Hadoop developers to add new methods
- to this base class that are automatically picked up by all implementations.
- <p/>
- This class does not extend the <code>Configured</code>
- base class, and should not be changed to do so, as it causes problems
- for subclasses. The constructor of the <code>Configured</code> calls
- the {@link #setConf(Configuration)} method, which will call into the
- subclasses before they have been fully constructed.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.net.AbstractDNSToSwitchMapping -->
- <!-- start class org.apache.hadoop.net.CachedDNSToSwitchMapping -->
- <class name="CachedDNSToSwitchMapping" extends="org.apache.hadoop.net.AbstractDNSToSwitchMapping"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CachedDNSToSwitchMapping" type="org.apache.hadoop.net.DNSToSwitchMapping"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[cache a raw DNS mapping
- @param rawMapping the raw mapping to cache]]>
- </doc>
- </constructor>
- <method name="resolve" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="names" type="java.util.List"/>
- </method>
- <method name="getSwitchMap" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the (host x switch) map.
- @return a copy of the cached map of hosts to rack]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isSingleSwitch" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Delegate the switch topology query to the raw mapping, via
- {@link AbstractDNSToSwitchMapping#isMappingSingleSwitch(DNSToSwitchMapping)}
- @return true iff the raw mapper is considered single-switch.]]>
- </doc>
- </method>
- <method name="reloadCachedMappings"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="reloadCachedMappings"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="names" type="java.util.List"/>
- </method>
- <field name="rawMapping" type="org.apache.hadoop.net.DNSToSwitchMapping"
- transient="false" volatile="false"
- static="false" final="true" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The uncached mapping]]>
- </doc>
- </field>
- <doc>
- <![CDATA[A cached implementation of DNSToSwitchMapping that takes an
- raw DNSToSwitchMapping and stores the resolved network location in
- a cache. The following calls to a resolved network location
- will get its location from the cache.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.net.CachedDNSToSwitchMapping -->
- <!-- start class org.apache.hadoop.net.ConnectTimeoutException -->
- <class name="ConnectTimeoutException" extends="java.net.SocketTimeoutException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ConnectTimeoutException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Thrown by {@link NetUtils#connect(java.net.Socket, java.net.SocketAddress, int)}
- if it times out while connecting to the remote host.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.net.ConnectTimeoutException -->
- <!-- start interface org.apache.hadoop.net.DNSToSwitchMapping -->
- <interface name="DNSToSwitchMapping" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="resolve" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="names" type="java.util.List"/>
- <doc>
- <![CDATA[Resolves a list of DNS-names/IP-addresses and returns back a list of
- switch information (network paths). One-to-one correspondence must be
- maintained between the elements in the lists.
- Consider an element in the argument list - x.y.com. The switch information
- that is returned must be a network path of the form /foo/rack,
- where / is the root, and 'foo' is the switch where 'rack' is connected.
- Note the hostname/ip-address is not part of the returned path.
- The network topology of the cluster would determine the number of
- components in the network path.
- <p/>
- If a name cannot be resolved to a rack, the implementation
- should return {@link NetworkTopology#DEFAULT_RACK}. This
- is what the bundled implementations do, though it is not a formal requirement
- @param names the list of hosts to resolve (can be empty)
- @return list of resolved network paths.
- If <i>names</i> is empty, the returned list is also empty]]>
- </doc>
- </method>
- <method name="reloadCachedMappings"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reload all of the cached mappings.
- If there is a cache, this method will clear it, so that future accesses
- will get a chance to see the new data.]]>
- </doc>
- </method>
- <method name="reloadCachedMappings"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="names" type="java.util.List"/>
- <doc>
- <![CDATA[Reload cached mappings on specific nodes.
- If there is a cache on these nodes, this method will clear it, so that
- future accesses will see updated data.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[An interface that must be implemented to allow pluggable
- DNS-name/IP-address to RackID resolvers.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.net.DNSToSwitchMapping -->
- <!-- start class org.apache.hadoop.net.ScriptBasedMapping -->
- <class name="ScriptBasedMapping" extends="org.apache.hadoop.net.CachedDNSToSwitchMapping"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ScriptBasedMapping"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance with the default configuration.
- </p>
- Calling {@link #setConf(Configuration)} will trigger a
- re-evaluation of the configuration settings and so be used to
- set up the mapping script.]]>
- </doc>
- </constructor>
- <constructor name="ScriptBasedMapping" type="org.apache.hadoop.net.DNSToSwitchMapping"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance from the given raw mapping
- @param rawMap raw DNSTOSwithMapping]]>
- </doc>
- </constructor>
- <constructor name="ScriptBasedMapping" type="org.apache.hadoop.conf.Configuration"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance from the given configuration
- @param conf configuration]]>
- </doc>
- </constructor>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[{@inheritDoc}
- <p/>
- This will get called in the superclass constructor, so a check is needed
- to ensure that the raw mapping is defined before trying to relaying a null
- configuration.
- @param conf]]>
- </doc>
- </method>
- <field name="NO_SCRIPT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Text used in the {@link #toString()} method if there is no string
- {@value}]]>
- </doc>
- </field>
- <doc>
- <![CDATA[This class implements the {@link DNSToSwitchMapping} interface using a
- script configured via the
- {@link CommonConfigurationKeys#NET_TOPOLOGY_SCRIPT_FILE_NAME_KEY} option.
- <p/>
- It contains a static class <code>RawScriptBasedMapping</code> that performs
- the work: reading the configuration parameters, executing any defined
- script, handling errors and such like. The outer
- class extends {@link CachedDNSToSwitchMapping} to cache the delegated
- queries.
- <p/>
- This DNS mapper's {@link #isSingleSwitch()} predicate returns
- true if and only if a script is defined.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.net.ScriptBasedMapping -->
- <!-- start class org.apache.hadoop.net.SocksSocketFactory -->
- <class name="SocksSocketFactory" extends="javax.net.SocketFactory"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <constructor name="SocksSocketFactory"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default empty constructor (for use with the reflection API).]]>
- </doc>
- </constructor>
- <constructor name="SocksSocketFactory" type="java.net.Proxy"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor with a supplied Proxy
-
- @param proxy the proxy to use to create sockets]]>
- </doc>
- </constructor>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="addr" type="java.net.InetAddress"/>
- <param name="port" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="addr" type="java.net.InetAddress"/>
- <param name="port" type="int"/>
- <param name="localHostAddr" type="java.net.InetAddress"/>
- <param name="localPort" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="host" type="java.lang.String"/>
- <param name="port" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnknownHostException" type="java.net.UnknownHostException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="host" type="java.lang.String"/>
- <param name="port" type="int"/>
- <param name="localHostAddr" type="java.net.InetAddress"/>
- <param name="localPort" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnknownHostException" type="java.net.UnknownHostException"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="java.lang.Object"/>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <doc>
- <![CDATA[Specialized SocketFactory to create sockets with a SOCKS proxy]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.net.SocksSocketFactory -->
- <!-- start class org.apache.hadoop.net.StandardSocketFactory -->
- <class name="StandardSocketFactory" extends="javax.net.SocketFactory"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="StandardSocketFactory"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default empty constructor (for use with the reflection API).]]>
- </doc>
- </constructor>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="addr" type="java.net.InetAddress"/>
- <param name="port" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="addr" type="java.net.InetAddress"/>
- <param name="port" type="int"/>
- <param name="localHostAddr" type="java.net.InetAddress"/>
- <param name="localPort" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="host" type="java.lang.String"/>
- <param name="port" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnknownHostException" type="java.net.UnknownHostException"/>
- </method>
- <method name="createSocket" return="java.net.Socket"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="host" type="java.lang.String"/>
- <param name="port" type="int"/>
- <param name="localHostAddr" type="java.net.InetAddress"/>
- <param name="localPort" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="UnknownHostException" type="java.net.UnknownHostException"/>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="obj" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Specialized SocketFactory to create sockets with a SOCKS proxy]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.net.StandardSocketFactory -->
- <!-- start class org.apache.hadoop.net.TableMapping -->
- <class name="TableMapping" extends="org.apache.hadoop.net.CachedDNSToSwitchMapping"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="TableMapping"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="reloadCachedMappings"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[<p>
- Simple {@link DNSToSwitchMapping} implementation that reads a 2 column text
- file. The columns are separated by whitespace. The first column is a DNS or
- IP address and the second column specifies the rack where the address maps.
- </p>
- <p>
- This class uses the configuration parameter {@code
- net.topology.table.file.name} to locate the mapping file.
- </p>
- <p>
- Calls to {@link #resolve(List)} will look up the address as defined in the
- mapping file. If no entry corresponding to the address is found, the value
- {@code /default-rack} is returned.
- </p>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.net.TableMapping -->
- <doc>
- <![CDATA[Network-related classes.]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.net.unix">
- </package>
- <package name="org.apache.hadoop.record">
- <!-- start class org.apache.hadoop.record.BinaryRecordInput -->
- <class name="BinaryRecordInput" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.RecordInput"/>
- <constructor name="BinaryRecordInput" type="java.io.InputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of BinaryRecordInput]]>
- </doc>
- </constructor>
- <constructor name="BinaryRecordInput" type="java.io.DataInput"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of BinaryRecordInput]]>
- </doc>
- </constructor>
- <method name="get" return="org.apache.hadoop.record.BinaryRecordInput"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="inp" type="java.io.DataInput"/>
- <doc>
- <![CDATA[Get a thread-local record input for the supplied DataInput.
- @param inp data input stream
- @return binary record input corresponding to the supplied DataInput.]]>
- </doc>
- </method>
- <method name="readByte" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readBool" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFloat" return="float"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readDouble" return="double"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readBuffer" return="org.apache.hadoop.record.Buffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startVector" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startMap" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.BinaryRecordInput -->
- <!-- start class org.apache.hadoop.record.BinaryRecordOutput -->
- <class name="BinaryRecordOutput" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.RecordOutput"/>
- <constructor name="BinaryRecordOutput" type="java.io.OutputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of BinaryRecordOutput]]>
- </doc>
- </constructor>
- <constructor name="BinaryRecordOutput" type="java.io.DataOutput"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of BinaryRecordOutput]]>
- </doc>
- </constructor>
- <method name="get" return="org.apache.hadoop.record.BinaryRecordOutput"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <doc>
- <![CDATA[Get a thread-local record output for the supplied DataOutput.
- @param out data output stream
- @return binary record output corresponding to the supplied DataOutput.]]>
- </doc>
- </method>
- <method name="writeByte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeBool"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="boolean"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeInt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeLong"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="long"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeFloat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="float"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeDouble"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="d" type="double"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeString"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buf" type="org.apache.hadoop.record.Buffer"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.BinaryRecordOutput -->
- <!-- start class org.apache.hadoop.record.Buffer -->
- <class name="Buffer" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://avro.apache.org/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="java.lang.Comparable"/>
- <implements name="java.lang.Cloneable"/>
- <constructor name="Buffer"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a zero-count sequence.]]>
- </doc>
- </constructor>
- <constructor name="Buffer" type="byte[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a Buffer using the byte array as the initial value.
- @param bytes This array becomes the backing storage for the object.]]>
- </doc>
- </constructor>
- <constructor name="Buffer" type="byte[], int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a Buffer using the byte range as the initial value.
- @param bytes Copy of this array becomes the backing storage for the object.
- @param offset offset into byte array
- @param length length of data]]>
- </doc>
- </constructor>
- <method name="set"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <doc>
- <![CDATA[Use the specified bytes array as underlying sequence.
- @param bytes byte sequence]]>
- </doc>
- </method>
- <method name="copy"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <doc>
- <![CDATA[Copy the specified byte array to the Buffer. Replaces the current buffer.
- @param bytes byte array to be assigned
- @param offset offset into byte array
- @param length length of data]]>
- </doc>
- </method>
- <method name="get" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the data from the Buffer.
-
- @return The data is only valid between 0 and getCount() - 1.]]>
- </doc>
- </method>
- <method name="getCount" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the current count of the buffer.]]>
- </doc>
- </method>
- <method name="getCapacity" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the capacity, which is the maximum count that could handled without
- resizing the backing storage.
-
- @return The number of bytes]]>
- </doc>
- </method>
- <method name="setCapacity"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newCapacity" type="int"/>
- <doc>
- <![CDATA[Change the capacity of the backing storage.
- The data is preserved if newCapacity {@literal >=} getCount().
- @param newCapacity The new capacity in bytes.]]>
- </doc>
- </method>
- <method name="reset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reset the buffer to 0 size]]>
- </doc>
- </method>
- <method name="truncate"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Change the capacity of the backing store to be the same as the current
- count of buffer.]]>
- </doc>
- </method>
- <method name="append"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="length" type="int"/>
- <doc>
- <![CDATA[Append specified bytes to the buffer.
- @param bytes byte array to be appended
- @param offset offset into byte array
- @param length length of data]]>
- </doc>
- </method>
- <method name="append"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <doc>
- <![CDATA[Append specified bytes to the buffer
- @param bytes byte array to be appended]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="java.lang.Object"/>
- <doc>
- <![CDATA[Define the sort order of the Buffer.
-
- @param other The other buffer
- @return Positive if this is bigger than other, 0 if they are equal, and
- negative if this is smaller than other.]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="java.lang.Object"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="charsetName" type="java.lang.String"/>
- <exception name="UnsupportedEncodingException" type="java.io.UnsupportedEncodingException"/>
- <doc>
- <![CDATA[Convert the byte buffer to a string an specific character encoding
- @param charsetName Valid Java Character Set Name]]>
- </doc>
- </method>
- <method name="clone" return="java.lang.Object"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="CloneNotSupportedException" type="java.lang.CloneNotSupportedException"/>
- </method>
- <doc>
- <![CDATA[A byte sequence that is used as a Java native type for buffer.
- It is resizable and distinguishes between the count of the sequence and
- the current capacity.
-
- @deprecated Replaced by <a href="http://avro.apache.org/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.Buffer -->
- <!-- start class org.apache.hadoop.record.CsvRecordInput -->
- <class name="CsvRecordInput" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.RecordInput"/>
- <constructor name="CsvRecordInput" type="java.io.InputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of CsvRecordInput]]>
- </doc>
- </constructor>
- <method name="readByte" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readBool" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFloat" return="float"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readDouble" return="double"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readBuffer" return="org.apache.hadoop.record.Buffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startVector" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startMap" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.CsvRecordInput -->
- <!-- start class org.apache.hadoop.record.CsvRecordOutput -->
- <class name="CsvRecordOutput" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.RecordOutput"/>
- <constructor name="CsvRecordOutput" type="java.io.OutputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of CsvRecordOutput]]>
- </doc>
- </constructor>
- <method name="writeByte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeBool"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="boolean"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeInt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeLong"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="long"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeFloat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="float"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeDouble"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="d" type="double"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeString"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buf" type="org.apache.hadoop.record.Buffer"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.CsvRecordOutput -->
- <!-- start interface org.apache.hadoop.record.Index -->
- <interface name="Index" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="done" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="incr"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Interface that acts as an iterator for deserializing maps.
- The deserializer returns an instance that the record uses to
- read vectors and maps. An example of usage is as follows:
- <code>
- Index idx = startVector(...);
- while (!idx.done()) {
- .... // read element of a vector
- idx.incr();
- }
- </code>
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.record.Index -->
- <!-- start class org.apache.hadoop.record.Record -->
- <class name="Record" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.io.WritableComparable"/>
- <implements name="java.lang.Cloneable"/>
- <constructor name="Record"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="serialize"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rout" type="org.apache.hadoop.record.RecordOutput"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serialize a record with tag (ususally field name)
- @param rout Record output destination
- @param tag record tag (Used only in tagged serialization e.g. XML)]]>
- </doc>
- </method>
- <method name="deserialize"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rin" type="org.apache.hadoop.record.RecordInput"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Deserialize a record with a tag (usually field name)
- @param rin Record input source
- @param tag Record tag (Used only in tagged serialization e.g. XML)]]>
- </doc>
- </method>
- <method name="compareTo" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="peer" type="java.lang.Object"/>
- <exception name="ClassCastException" type="java.lang.ClassCastException"/>
- </method>
- <method name="serialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rout" type="org.apache.hadoop.record.RecordOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serialize a record without a tag
- @param rout Record output destination]]>
- </doc>
- </method>
- <method name="deserialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rin" type="org.apache.hadoop.record.RecordInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Deserialize a record without a tag
- @param rin Record input source]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="din" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Abstract class that is extended by generated classes.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.Record -->
- <!-- start class org.apache.hadoop.record.RecordComparator -->
- <class name="RecordComparator" extends="org.apache.hadoop.io.WritableComparator"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="RecordComparator" type="java.lang.Class"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a raw {@link Record} comparison implementation.]]>
- </doc>
- </constructor>
- <method name="compare" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b1" type="byte[]"/>
- <param name="s1" type="int"/>
- <param name="l1" type="int"/>
- <param name="b2" type="byte[]"/>
- <param name="s2" type="int"/>
- <param name="l2" type="int"/>
- </method>
- <method name="define"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="c" type="java.lang.Class"/>
- <param name="comparator" type="org.apache.hadoop.record.RecordComparator"/>
- <doc>
- <![CDATA[Register an optimized comparator for a {@link Record} implementation.
- @param c record classs for which a raw comparator is provided
- @param comparator Raw comparator instance for class c]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A raw record comparator base class
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.RecordComparator -->
- <!-- start interface org.apache.hadoop.record.RecordInput -->
- <interface name="RecordInput" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="readByte" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a byte from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="readBool" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a boolean from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="readInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read an integer from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="readLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a long integer from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="readFloat" return="float"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a single-precision float from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="readDouble" return="double"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a double-precision number from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read a UTF-8 encoded string from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="readBuffer" return="org.apache.hadoop.record.Buffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Read byte array from serialized record.
- @param tag Used by tagged serialization formats (such as XML)
- @return value read from serialized record.]]>
- </doc>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check the mark for start of the serialized record.
- @param tag Used by tagged serialization formats (such as XML)]]>
- </doc>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check the mark for end of the serialized record.
- @param tag Used by tagged serialization formats (such as XML)]]>
- </doc>
- </method>
- <method name="startVector" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check the mark for start of the serialized vector.
- @param tag Used by tagged serialization formats (such as XML)
- @return Index that is used to count the number of elements.]]>
- </doc>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check the mark for end of the serialized vector.
- @param tag Used by tagged serialization formats (such as XML)]]>
- </doc>
- </method>
- <method name="startMap" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check the mark for start of the serialized map.
- @param tag Used by tagged serialization formats (such as XML)
- @return Index that is used to count the number of map entries.]]>
- </doc>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check the mark for end of the serialized map.
- @param tag Used by tagged serialization formats (such as XML)]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Interface that all the Deserializers have to implement.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.record.RecordInput -->
- <!-- start interface org.apache.hadoop.record.RecordOutput -->
- <interface name="RecordOutput" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="writeByte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a byte to serialized record.
- @param b Byte to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="writeBool"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="boolean"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a boolean to serialized record.
- @param b Boolean to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="writeInt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write an integer to serialized record.
- @param i Integer to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="writeLong"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="long"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a long integer to serialized record.
- @param l Long to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="writeFloat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="float"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a single-precision float to serialized record.
- @param f Float to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="writeDouble"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="d" type="double"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a double precision floating point number to serialized record.
- @param d Double to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="writeString"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a unicode string to serialized record.
- @param s String to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="writeBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buf" type="org.apache.hadoop.record.Buffer"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Write a buffer to serialized record.
- @param buf Buffer to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark the start of a record to be serialized.
- @param r Record to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark the end of a serialized record.
- @param r Record to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="startVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark the start of a vector to be serialized.
- @param v Vector to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark the end of a serialized vector.
- @param v Vector to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="startMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="m" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark the start of a map to be serialized.
- @param m Map to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="m" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Mark the end of a serialized map.
- @param m Map to be serialized
- @param tag Used by tagged serialization formats (such as XML)
- @throws IOException Indicates error in serialization]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Interface that all the serializers have to implement.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.record.RecordOutput -->
- <!-- start class org.apache.hadoop.record.Utils -->
- <class name="Utils" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://avro.apache.org/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="readFloat" return="float"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Parse a float from a byte array.]]>
- </doc>
- </method>
- <method name="readDouble" return="double"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <doc>
- <![CDATA[Parse a double from a byte array.]]>
- </doc>
- </method>
- <method name="readVLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded long from a byte array and returns it.
- @param bytes byte array with decode long
- @param start starting index
- @throws java.io.IOException
- @return deserialized long]]>
- </doc>
- </method>
- <method name="readVInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- <param name="start" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded integer from a byte array and returns it.
- @param bytes byte array with the encoded integer
- @param start start index
- @throws java.io.IOException
- @return deserialized integer]]>
- </doc>
- </method>
- <method name="readVLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded long from a stream and return it.
- @param in input stream
- @throws java.io.IOException
- @return deserialized long]]>
- </doc>
- </method>
- <method name="readVInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Reads a zero-compressed encoded integer from a stream and returns it.
- @param in input stream
- @throws java.io.IOException
- @return deserialized integer]]>
- </doc>
- </method>
- <method name="getVIntSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="i" type="long"/>
- <doc>
- <![CDATA[Get the encoded length if an integer is stored in a variable-length format
- @return the encoded length]]>
- </doc>
- </method>
- <method name="writeVLong"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.DataOutput"/>
- <param name="i" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serializes a long to a binary stream with zero-compressed encoding.
- For {@literal -112 <= i <= 127}, only one byte is used with the actual
- value. For other values of i, the first byte value indicates whether the
- long is positive or negative, and the number of bytes that follow.
- If the first byte value v is between -113 and -120, the following long
- is positive, with number of bytes that follow are -(v+112).
- If the first byte value v is between -121 and -128, the following long
- is negative, with number of bytes that follow are -(v+120). Bytes are
- stored in the high-non-zero-byte-first order.
- @param stream Binary output stream
- @param i Long to be serialized
- @throws java.io.IOException]]>
- </doc>
- </method>
- <method name="writeVInt"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.DataOutput"/>
- <param name="i" type="int"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serializes an int to a binary stream with zero-compressed encoding.
- @param stream Binary output stream
- @param i int to be serialized
- @throws java.io.IOException]]>
- </doc>
- </method>
- <method name="compareBytes" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b1" type="byte[]"/>
- <param name="s1" type="int"/>
- <param name="l1" type="int"/>
- <param name="b2" type="byte[]"/>
- <param name="s2" type="int"/>
- <param name="l2" type="int"/>
- <doc>
- <![CDATA[Lexicographic order of binary data.]]>
- </doc>
- </method>
- <field name="hexchars" type="char[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Various utility functions for Hadoop record I/O runtime.
-
- @deprecated Replaced by <a href="http://avro.apache.org/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.Utils -->
- <!-- start class org.apache.hadoop.record.XmlRecordInput -->
- <class name="XmlRecordInput" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.RecordInput"/>
- <constructor name="XmlRecordInput" type="java.io.InputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of XmlRecordInput]]>
- </doc>
- </constructor>
- <method name="readByte" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readBool" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readInt" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readLong" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFloat" return="float"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readDouble" return="double"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readBuffer" return="org.apache.hadoop.record.Buffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startVector" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startMap" return="org.apache.hadoop.record.Index"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[XML Deserializer.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.XmlRecordInput -->
- <!-- start class org.apache.hadoop.record.XmlRecordOutput -->
- <class name="XmlRecordOutput" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.RecordOutput"/>
- <constructor name="XmlRecordOutput" type="java.io.OutputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of XmlRecordOutput]]>
- </doc>
- </constructor>
- <method name="writeByte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeBool"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="boolean"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeInt"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeLong"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="long"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeFloat"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="f" type="float"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeDouble"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="d" type="double"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeString"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="s" type="java.lang.String"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeBuffer"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="buf" type="org.apache.hadoop.record.Buffer"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="r" type="org.apache.hadoop.record.Record"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.ArrayList"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="startMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="endMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="v" type="java.util.TreeMap"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[XML Serializer.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.XmlRecordOutput -->
- <doc>
- <![CDATA[<p>
- (DEPRECATED) Hadoop record I/O contains classes and a record description language
- translator for simplifying serialization and deserialization of records in a
- language-neutral manner.
- </p>
-
- <p>
- DEPRECATED: Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.
- </p>
-
- <h2>Introduction</h2>
-
- Software systems of any significant complexity require mechanisms for data
- interchange with the outside world. These interchanges typically involve the
- marshaling and unmarshaling of logical units of data to and from data streams
- (files, network connections, memory buffers etc.). Applications usually have
- some code for serializing and deserializing the data types that they manipulate
- embedded in them. The work of serialization has several features that make
- automatic code generation for it worthwhile. Given a particular output encoding
- (binary, XML, etc.), serialization of primitive types and simple compositions
- of primitives (structs, vectors etc.) is a very mechanical task. Manually
- written serialization code can be susceptible to bugs especially when records
- have a large number of fields or a record definition changes between software
- versions. Lastly, it can be very useful for applications written in different
- programming languages to be able to share and interchange data. This can be
- made a lot easier by describing the data records manipulated by these
- applications in a language agnostic manner and using the descriptions to derive
- implementations of serialization in multiple target languages.
- This document describes Hadoop Record I/O, a mechanism that is aimed
- at
- <ul>
- <li> enabling the specification of simple serializable data types (records)
- <li> enabling the generation of code in multiple target languages for
- marshaling and unmarshaling such types
- <li> providing target language specific support that will enable application
- programmers to incorporate generated code into their applications
- </ul>
- The goals of Hadoop Record I/O are similar to those of mechanisms such as XDR,
- ASN.1, PADS and ICE. While these systems all include a DDL that enables
- the specification of most record types, they differ widely in what else they
- focus on. The focus in Hadoop Record I/O is on data marshaling and
- multi-lingual support. We take a translator-based approach to serialization.
- Hadoop users have to describe their data in a simple data description
- language. The Hadoop DDL translator rcc generates code that users
- can invoke in order to read/write their data from/to simple stream
- abstractions. Next we list explicitly some of the goals and non-goals of
- Hadoop Record I/O.
- <h3>Goals</h3>
- <ul>
- <li> Support for commonly used primitive types. Hadoop should include as
- primitives commonly used builtin types from programming languages we intend to
- support.
- <li> Support for common data compositions (including recursive compositions).
- Hadoop should support widely used composite types such as structs and
- vectors.
- <li> Code generation in multiple target languages. Hadoop should be capable of
- generating serialization code in multiple target languages and should be
- easily extensible to new target languages. The initial target languages are
- C++ and Java.
- <li> Support for generated target languages. Hadooop should include support
- in the form of headers, libraries, packages for supported target languages
- that enable easy inclusion and use of generated code in applications.
- <li> Support for multiple output encodings. Candidates include
- packed binary, comma-separated text, XML etc.
- <li> Support for specifying record types in a backwards/forwards compatible
- manner. This will probably be in the form of support for optional fields in
- records. This version of the document does not include a description of the
- planned mechanism, we intend to include it in the next iteration.
- </ul>
- <h3>Non-Goals</h3>
- <ul>
- <li> Serializing existing arbitrary C++ classes.
- <li> Serializing complex data structures such as trees, linked lists etc.
- <li> Built-in indexing schemes, compression, or check-sums.
- <li> Dynamic construction of objects from an XML schema.
- </ul>
- The remainder of this document describes the features of Hadoop record I/O
- in more detail. Section 2 describes the data types supported by the system.
- Section 3 lays out the DDL syntax with some examples of simple records.
- Section 4 describes the process of code generation with rcc. Section 5
- describes target language mappings and support for Hadoop types. We include a
- fairly complete description of C++ mappings with intent to include Java and
- others in upcoming iterations of this document. The last section talks about
- supported output encodings.
- <h2>Data Types and Streams</h2>
- This section describes the primitive and composite types supported by Hadoop.
- We aim to support a set of types that can be used to simply and efficiently
- express a wide range of record types in different programming languages.
- <h3>Primitive Types</h3>
- For the most part, the primitive types of Hadoop map directly to primitive
- types in high level programming languages. Special cases are the
- ustring (a Unicode string) and buffer types, which we believe
- find wide use and which are usually implemented in library code and not
- available as language built-ins. Hadoop also supplies these via library code
- when a target language built-in is not present and there is no widely
- adopted "standard" implementation. The complete list of primitive types is:
- <ul>
- <li> byte: An 8-bit unsigned integer.
- <li> boolean: A boolean value.
- <li> int: A 32-bit signed integer.
- <li> long: A 64-bit signed integer.
- <li> float: A single precision floating point number as described by
- IEEE-754.
- <li> double: A double precision floating point number as described by
- IEEE-754.
- <li> ustring: A string consisting of Unicode characters.
- <li> buffer: An arbitrary sequence of bytes.
- </ul>
- <h3>Composite Types</h3>
- Hadoop supports a small set of composite types that enable the description
- of simple aggregate types and containers. A composite type is serialized
- by sequentially serializing it constituent elements. The supported
- composite types are:
- <ul>
- <li> record: An aggregate type like a C-struct. This is a list of
- typed fields that are together considered a single unit of data. A record
- is serialized by sequentially serializing its constituent fields. In addition
- to serialization a record has comparison operations (equality and less-than)
- implemented for it, these are defined as memberwise comparisons.
- <li>vector: A sequence of entries of the same data type, primitive
- or composite.
- <li> map: An associative container mapping instances of a key type to
- instances of a value type. The key and value types may themselves be primitive
- or composite types.
- </ul>
- <h3>Streams</h3>
- Hadoop generates code for serializing and deserializing record types to
- abstract streams. For each target language Hadoop defines very simple input
- and output stream interfaces. Application writers can usually develop
- concrete implementations of these by putting a one method wrapper around
- an existing stream implementation.
- <h2>DDL Syntax and Examples</h2>
- We now describe the syntax of the Hadoop data description language. This is
- followed by a few examples of DDL usage.
-
- <h3>Hadoop DDL Syntax</h3>
- <pre><code>
- recfile = *include module *record
- include = "include" path
- path = (relative-path / absolute-path)
- module = "module" module-name
- module-name = name *("." name)
- record := "class" name "{" 1*(field) "}"
- field := type name ";"
- name := ALPHA (ALPHA / DIGIT / "_" )*
- type := (ptype / ctype)
- ptype := ("byte" / "boolean" / "int" |
- "long" / "float" / "double"
- "ustring" / "buffer")
- ctype := (("vector" "<" type ">") /
- ("map" "<" type "," type ">" ) ) / name)
- </code></pre>
- A DDL file describes one or more record types. It begins with zero or
- more include declarations, a single mandatory module declaration
- followed by zero or more class declarations. The semantics of each of
- these declarations are described below:
- <ul>
- <li>include: An include declaration specifies a DDL file to be
- referenced when generating code for types in the current DDL file. Record types
- in the current compilation unit may refer to types in all included files.
- File inclusion is recursive. An include does not trigger code
- generation for the referenced file.
- <li> module: Every Hadoop DDL file must have a single module
- declaration that follows the list of includes and precedes all record
- declarations. A module declaration identifies a scope within which
- the names of all types in the current file are visible. Module names are
- mapped to C++ namespaces, Java packages etc. in generated code.
- <li> class: Records types are specified through class
- declarations. A class declaration is like a Java class declaration.
- It specifies a named record type and a list of fields that constitute records
- of the type. Usage is illustrated in the following examples.
- </ul>
- <h3>Examples</h3>
- <ul>
- <li>A simple DDL file links.jr with just one record declaration.
- <pre><code>
- module links {
- class Link {
- ustring URL;
- boolean isRelative;
- ustring anchorText;
- };
- }
- </code></pre>
- <li> A DDL file outlinks.jr which includes another
- <pre><code>
- include "links.jr"
- module outlinks {
- class OutLinks {
- ustring baseURL;
- vector<links.Link> outLinks;
- };
- }
- </code></pre>
- </ul>
- <h2>Code Generation</h2>
- The Hadoop translator is written in Java. Invocation is done by executing a
- wrapper shell script named named rcc. It takes a list of
- record description files as a mandatory argument and an
- optional language argument (the default is Java) --language or
- -l. Thus a typical invocation would look like:
- <pre><code>
- $ rcc -l C++ <filename> ...
- </code></pre>
- <h2>Target Language Mappings and Support</h2>
- For all target languages, the unit of code generation is a record type.
- For each record type, Hadoop generates code for serialization and
- deserialization, record comparison and access to record members.
- <h3>C++</h3>
- Support for including Hadoop generated C++ code in applications comes in the
- form of a header file recordio.hh which needs to be included in source
- that uses Hadoop types and a library librecordio.a which applications need
- to be linked with. The header declares the Hadoop C++ namespace which defines
- appropriate types for the various primitives, the basic interfaces for
- records and streams and enumerates the supported serialization encodings.
- Declarations of these interfaces and a description of their semantics follow:
- <pre><code>
- namespace hadoop {
- enum RecFormat { kBinary, kXML, kCSV };
- class InStream {
- public:
- virtual ssize_t read(void *buf, size_t n) = 0;
- };
- class OutStream {
- public:
- virtual ssize_t write(const void *buf, size_t n) = 0;
- };
- class IOError : public runtime_error {
- public:
- explicit IOError(const std::string& msg);
- };
- class IArchive;
- class OArchive;
- class RecordReader {
- public:
- RecordReader(InStream& in, RecFormat fmt);
- virtual ~RecordReader(void);
- virtual void read(Record& rec);
- };
- class RecordWriter {
- public:
- RecordWriter(OutStream& out, RecFormat fmt);
- virtual ~RecordWriter(void);
- virtual void write(Record& rec);
- };
- class Record {
- public:
- virtual std::string type(void) const = 0;
- virtual std::string signature(void) const = 0;
- protected:
- virtual bool validate(void) const = 0;
- virtual void
- serialize(OArchive& oa, const std::string& tag) const = 0;
- virtual void
- deserialize(IArchive& ia, const std::string& tag) = 0;
- };
- }
- </code></pre>
- <ul>
- <li> RecFormat: An enumeration of the serialization encodings supported
- by this implementation of Hadoop.
- <li> InStream: A simple abstraction for an input stream. This has a
- single public read method that reads n bytes from the stream into
- the buffer buf. Has the same semantics as a blocking read system
- call. Returns the number of bytes read or -1 if an error occurs.
- <li> OutStream: A simple abstraction for an output stream. This has a
- single write method that writes n bytes to the stream from the
- buffer buf. Has the same semantics as a blocking write system
- call. Returns the number of bytes written or -1 if an error occurs.
- <li> RecordReader: A RecordReader reads records one at a time from
- an underlying stream in a specified record format. The reader is instantiated
- with a stream and a serialization format. It has a read method that
- takes an instance of a record and deserializes the record from the stream.
- <li> RecordWriter: A RecordWriter writes records one at a
- time to an underlying stream in a specified record format. The writer is
- instantiated with a stream and a serialization format. It has a
- write method that takes an instance of a record and serializes the
- record to the stream.
- <li> Record: The base class for all generated record types. This has two
- public methods type and signature that return the typename and the
- type signature of the record.
- </ul>
- Two files are generated for each record file (note: not for each record). If a
- record file is named "name.jr", the generated files are
- "name.jr.cc" and "name.jr.hh" containing serialization
- implementations and record type declarations respectively.
- For each record in the DDL file, the generated header file will contain a
- class definition corresponding to the record type, method definitions for the
- generated type will be present in the '.cc' file. The generated class will
- inherit from the abstract class hadoop::Record. The DDL files
- module declaration determines the namespace the record belongs to.
- Each '.' delimited token in the module declaration results in the
- creation of a namespace. For instance, the declaration module docs.links
- results in the creation of a docs namespace and a nested
- docs::links namespace. In the preceding examples, the Link class
- is placed in the links namespace. The header file corresponding to
- the links.jr file will contain:
- <pre><code>
- namespace links {
- class Link : public hadoop::Record {
- // ....
- };
- };
- </code></pre>
- Each field within the record will cause the generation of a private member
- declaration of the appropriate type in the class declaration, and one or more
- acccessor methods. The generated class will implement the serialize and
- deserialize methods defined in hadoop::Record+. It will also
- implement the inspection methods type and signature from
- hadoop::Record. A default constructor and virtual destructor will also
- be generated. Serialization code will read/write records into streams that
- implement the hadoop::InStream and the hadoop::OutStream interfaces.
- For each member of a record an accessor method is generated that returns
- either the member or a reference to the member. For members that are returned
- by value, a setter method is also generated. This is true for primitive
- data members of the types byte, int, long, boolean, float and
- double. For example, for a int field called MyField the folowing
- code is generated.
- <pre><code>
- ...
- private:
- int32_t mMyField;
- ...
- public:
- int32_t getMyField(void) const {
- return mMyField;
- };
- void setMyField(int32_t m) {
- mMyField = m;
- };
- ...
- </code></pre>
- For a ustring or buffer or composite field. The generated code
- only contains accessors that return a reference to the field. A const
- and a non-const accessor are generated. For example:
- <pre><code>
- ...
- private:
- std::string mMyBuf;
- ...
- public:
- std::string& getMyBuf() {
- return mMyBuf;
- };
- const std::string& getMyBuf() const {
- return mMyBuf;
- };
- ...
- </code></pre>
- <h4>Examples</h4>
- Suppose the inclrec.jr file contains:
- <pre><code>
- module inclrec {
- class RI {
- int I32;
- double D;
- ustring S;
- };
- }
- </code></pre>
- and the testrec.jr file contains:
- <pre><code>
- include "inclrec.jr"
- module testrec {
- class R {
- vector<float> VF;
- RI Rec;
- buffer Buf;
- };
- }
- </code></pre>
- Then the invocation of rcc such as:
- <pre><code>
- $ rcc -l c++ inclrec.jr testrec.jr
- </code></pre>
- will result in generation of four files:
- inclrec.jr.{cc,hh} and testrec.jr.{cc,hh}.
- The inclrec.jr.hh will contain:
- <pre><code>
- #ifndef _INCLREC_JR_HH_
- #define _INCLREC_JR_HH_
- #include "recordio.hh"
- namespace inclrec {
-
- class RI : public hadoop::Record {
- private:
- int32_t I32;
- double D;
- std::string S;
- public:
- RI(void);
- virtual ~RI(void);
- virtual bool operator==(const RI& peer) const;
- virtual bool operator<(const RI& peer) const;
- virtual int32_t getI32(void) const { return I32; }
- virtual void setI32(int32_t v) { I32 = v; }
- virtual double getD(void) const { return D; }
- virtual void setD(double v) { D = v; }
- virtual std::string& getS(void) const { return S; }
- virtual const std::string& getS(void) const { return S; }
- virtual std::string type(void) const;
- virtual std::string signature(void) const;
- protected:
- virtual void serialize(hadoop::OArchive& a) const;
- virtual void deserialize(hadoop::IArchive& a);
- };
- } // end namespace inclrec
- #endif /* _INCLREC_JR_HH_ */
- </code></pre>
- The testrec.jr.hh file will contain:
- <pre><code>
- #ifndef _TESTREC_JR_HH_
- #define _TESTREC_JR_HH_
- #include "inclrec.jr.hh"
- namespace testrec {
- class R : public hadoop::Record {
- private:
- std::vector<float> VF;
- inclrec::RI Rec;
- std::string Buf;
- public:
- R(void);
- virtual ~R(void);
- virtual bool operator==(const R& peer) const;
- virtual bool operator<(const R& peer) const;
- virtual std::vector<float>& getVF(void) const;
- virtual const std::vector<float>& getVF(void) const;
- virtual std::string& getBuf(void) const ;
- virtual const std::string& getBuf(void) const;
- virtual inclrec::RI& getRec(void) const;
- virtual const inclrec::RI& getRec(void) const;
-
- virtual bool serialize(hadoop::OutArchive& a) const;
- virtual bool deserialize(hadoop::InArchive& a);
-
- virtual std::string type(void) const;
- virtual std::string signature(void) const;
- };
- }; // end namespace testrec
- #endif /* _TESTREC_JR_HH_ */
- </code></pre>
- <h3>Java</h3>
- Code generation for Java is similar to that for C++. A Java class is generated
- for each record type with private members corresponding to the fields. Getters
- and setters for fields are also generated. Some differences arise in the
- way comparison is expressed and in the mapping of modules to packages and
- classes to files. For equality testing, an equals method is generated
- for each record type. As per Java requirements a hashCode method is also
- generated. For comparison a compareTo method is generated for each
- record type. This has the semantics as defined by the Java Comparable
- interface, that is, the method returns a negative integer, zero, or a positive
- integer as the invoked object is less than, equal to, or greater than the
- comparison parameter.
- A .java file is generated per record type as opposed to per DDL
- file as in C++. The module declaration translates to a Java
- package declaration. The module name maps to an identical Java package
- name. In addition to this mapping, the DDL compiler creates the appropriate
- directory hierarchy for the package and places the generated .java
- files in the correct directories.
- <h2>Mapping Summary</h2>
- <pre><code>
- DDL Type C++ Type Java Type
- boolean bool boolean
- byte int8_t byte
- int int32_t int
- long int64_t long
- float float float
- double double double
- ustring std::string java.lang.String
- buffer std::string org.apache.hadoop.record.Buffer
- class type class type class type
- vector<type> std::vector<type> java.util.ArrayList<type>
- map<type,type> std::map<type,type> java.util.TreeMap<type,type>
- </code></pre>
- <h2>Data encodings</h2>
- This section describes the format of the data encodings supported by Hadoop.
- Currently, three data encodings are supported, namely binary, CSV and XML.
- <h3>Binary Serialization Format</h3>
- The binary data encoding format is fairly dense. Serialization of composite
- types is simply defined as a concatenation of serializations of the constituent
- elements (lengths are included in vectors and maps).
- Composite types are serialized as follows:
- <ul>
- <li> class: Sequence of serialized members.
- <li> vector: The number of elements serialized as an int. Followed by a
- sequence of serialized elements.
- <li> map: The number of key value pairs serialized as an int. Followed
- by a sequence of serialized (key,value) pairs.
- </ul>
- Serialization of primitives is more interesting, with a zero compression
- optimization for integral types and normalization to UTF-8 for strings.
- Primitive types are serialized as follows:
- <ul>
- <li> byte: Represented by 1 byte, as is.
- <li> boolean: Represented by 1-byte (0 or 1)
- <li> int/long: Integers and longs are serialized zero compressed.
- Represented as 1-byte if -120 <= value < 128. Otherwise, serialized as a
- sequence of 2-5 bytes for ints, 2-9 bytes for longs. The first byte represents
- the number of trailing bytes, N, as the negative number (-120-N). For example,
- the number 1024 (0x400) is represented by the byte sequence 'x86 x04 x00'.
- This doesn't help much for 4-byte integers but does a reasonably good job with
- longs without bit twiddling.
- <li> float/double: Serialized in IEEE 754 single and double precision
- format in network byte order. This is the format used by Java.
- <li> ustring: Serialized as 4-byte zero compressed length followed by
- data encoded as UTF-8. Strings are normalized to UTF-8 regardless of native
- language representation.
- <li> buffer: Serialized as a 4-byte zero compressed length followed by the
- raw bytes in the buffer.
- </ul>
- <h3>CSV Serialization Format</h3>
- The CSV serialization format has a lot more structure than the "standard"
- Excel CSV format, but we believe the additional structure is useful because
- <ul>
- <li> it makes parsing a lot easier without detracting too much from legibility
- <li> the delimiters around composites make it obvious when one is reading a
- sequence of Hadoop records
- </ul>
- Serialization formats for the various types are detailed in the grammar that
- follows. The notable feature of the formats is the use of delimiters for
- indicating the certain field types.
- <ul>
- <li> A string field begins with a single quote (').
- <li> A buffer field begins with a sharp (#).
- <li> A class, vector or map begins with 's{', 'v{' or 'm{' respectively and
- ends with '}'.
- </ul>
- The CSV format can be described by the following grammar:
- <pre><code>
- record = primitive / struct / vector / map
- primitive = boolean / int / long / float / double / ustring / buffer
- boolean = "T" / "F"
- int = ["-"] 1*DIGIT
- long = ";" ["-"] 1*DIGIT
- float = ["-"] 1*DIGIT "." 1*DIGIT ["E" / "e" ["-"] 1*DIGIT]
- double = ";" ["-"] 1*DIGIT "." 1*DIGIT ["E" / "e" ["-"] 1*DIGIT]
- ustring = "'" *(UTF8 char except NULL, LF, % and , / "%00" / "%0a" / "%25" / "%2c" )
- buffer = "#" *(BYTE except NULL, LF, % and , / "%00" / "%0a" / "%25" / "%2c" )
- struct = "s{" record *("," record) "}"
- vector = "v{" [record *("," record)] "}"
- map = "m{" [*(record "," record)] "}"
- </code></pre>
- <h3>XML Serialization Format</h3>
- The XML serialization format is the same used by Apache XML-RPC
- (http://ws.apache.org/xmlrpc/types.html). This is an extension of the original
- XML-RPC format and adds some additional data types. All record I/O types are
- not directly expressible in this format, and access to a DDL is required in
- order to convert these to valid types. All types primitive or composite are
- represented by <value> elements. The particular XML-RPC type is
- indicated by a nested element in the <value> element. The encoding for
- records is always UTF-8. Primitive types are serialized as follows:
- <ul>
- <li> byte: XML tag <ex:i1>. Values: 1-byte unsigned
- integers represented in US-ASCII
- <li> boolean: XML tag <boolean>. Values: "0" or "1"
- <li> int: XML tags <i4> or <int>. Values: 4-byte
- signed integers represented in US-ASCII.
- <li> long: XML tag <ex:i8>. Values: 8-byte signed integers
- represented in US-ASCII.
- <li> float: XML tag <ex:float>. Values: Single precision
- floating point numbers represented in US-ASCII.
- <li> double: XML tag <double>. Values: Double precision
- floating point numbers represented in US-ASCII.
- <li> ustring: XML tag <;string>. Values: String values
- represented as UTF-8. XML does not permit all Unicode characters in literal
- data. In particular, NULLs and control chars are not allowed. Additionally,
- XML processors are required to replace carriage returns with line feeds and to
- replace CRLF sequences with line feeds. Programming languages that we work
- with do not impose these restrictions on string types. To work around these
- restrictions, disallowed characters and CRs are percent escaped in strings.
- The '%' character is also percent escaped.
- <li> buffer: XML tag <string&>. Values: Arbitrary binary
- data. Represented as hexBinary, each byte is replaced by its 2-byte
- hexadecimal representation.
- </ul>
- Composite types are serialized as follows:
- <ul>
- <li> class: XML tag <struct>. A struct is a sequence of
- <member> elements. Each <member> element has a <name>
- element and a <value> element. The <name> is a string that must
- match /[a-zA-Z][a-zA-Z0-9_]*/. The value of the member is represented
- by a <value> element.
- <li> vector: XML tag <array<. An <array> contains a
- single <data> element. The <data> element is a sequence of
- <value> elements each of which represents an element of the vector.
- <li> map: XML tag <array>. Same as vector.
- </ul>
- For example:
- <pre><code>
- class {
- int MY_INT; // value 5
- vector<float> MY_VEC; // values 0.1, -0.89, 2.45e4
- buffer MY_BUF; // value '\00\n\tabc%'
- }
- </code></pre>
- is serialized as
- <pre><code class="XML">
- <value>
- <struct>
- <member>
- <name>MY_INT</name>
- <value><i4>5</i4></value>
- </member>
- <member>
- <name>MY_VEC</name>
- <value>
- <array>
- <data>
- <value><ex:float>0.1</ex:float></value>
- <value><ex:float>-0.89</ex:float></value>
- <value><ex:float>2.45e4</ex:float></value>
- </data>
- </array>
- </value>
- </member>
- <member>
- <name>MY_BUF</name>
- <value><string>%00\n\tabc%25</string></value>
- </member>
- </struct>
- </value>
- </code></pre>]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.record.compiler">
- <!-- start class org.apache.hadoop.record.compiler.CodeBuffer -->
- <class name="CodeBuffer" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[A wrapper around StringBuffer that automatically does indentation
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.CodeBuffer -->
- <!-- start class org.apache.hadoop.record.compiler.Consts -->
- <class name="Consts" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <field name="RIO_PREFIX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RTI_VAR" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RTI_FILTER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RTI_FILTER_FIELDS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RECORD_OUTPUT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RECORD_INPUT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="TAG" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[const definitions for Record I/O compiler
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.Consts -->
- <!-- start class org.apache.hadoop.record.compiler.JBoolean -->
- <class name="JBoolean" extends="org.apache.hadoop.record.compiler.JType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JBoolean"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JBoolean]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JBoolean -->
- <!-- start class org.apache.hadoop.record.compiler.JBuffer -->
- <class name="JBuffer" extends="org.apache.hadoop.record.compiler.JCompType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JBuffer"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JBuffer]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[Code generator for "buffer" type.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JBuffer -->
- <!-- start class org.apache.hadoop.record.compiler.JByte -->
- <class name="JByte" extends="org.apache.hadoop.record.compiler.JType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JByte"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Code generator for "byte" type.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JByte -->
- <!-- start class org.apache.hadoop.record.compiler.JDouble -->
- <class name="JDouble" extends="org.apache.hadoop.record.compiler.JType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JDouble"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JDouble]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JDouble -->
- <!-- start class org.apache.hadoop.record.compiler.JField -->
- <class name="JField" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JField" type="java.lang.String, T"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JField]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[A thin wrappper around record field.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JField -->
- <!-- start class org.apache.hadoop.record.compiler.JFile -->
- <class name="JFile" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JFile" type="java.lang.String, java.util.ArrayList, java.util.ArrayList"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JFile
- @param name possibly full pathname to the file
- @param inclFiles included files (as JFile)
- @param recList List of records defined within this file]]>
- </doc>
- </constructor>
- <method name="genCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="language" type="java.lang.String"/>
- <param name="destDir" type="java.lang.String"/>
- <param name="options" type="java.util.ArrayList"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Generate record code in given language. Language should be all
- lowercase.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Container for the Hadoop Record DDL.
- The main components of the file are filename, list of included files,
- and records defined in that file.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JFile -->
- <!-- start class org.apache.hadoop.record.compiler.JFloat -->
- <class name="JFloat" extends="org.apache.hadoop.record.compiler.JType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JFloat"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JFloat]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JFloat -->
- <!-- start class org.apache.hadoop.record.compiler.JInt -->
- <class name="JInt" extends="org.apache.hadoop.record.compiler.JType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JInt"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JInt]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[Code generator for "int" type
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JInt -->
- <!-- start class org.apache.hadoop.record.compiler.JLong -->
- <class name="JLong" extends="org.apache.hadoop.record.compiler.JType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JLong"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JLong]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[Code generator for "long" type
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JLong -->
- <!-- start class org.apache.hadoop.record.compiler.JMap -->
- <class name="JMap" extends="org.apache.hadoop.record.compiler.JCompType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JMap" type="org.apache.hadoop.record.compiler.JType, org.apache.hadoop.record.compiler.JType"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JMap]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JMap -->
- <!-- start class org.apache.hadoop.record.compiler.JRecord -->
- <class name="JRecord" extends="org.apache.hadoop.record.compiler.JCompType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JRecord" type="java.lang.String, java.util.ArrayList"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JRecord]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JRecord -->
- <!-- start class org.apache.hadoop.record.compiler.JString -->
- <class name="JString" extends="org.apache.hadoop.record.compiler.JCompType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JString"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JString]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JString -->
- <!-- start class org.apache.hadoop.record.compiler.JType -->
- <class name="JType" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JType"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[Abstract Base class for all types supported by Hadoop Record I/O.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JType -->
- <!-- start class org.apache.hadoop.record.compiler.JVector -->
- <class name="JVector" extends="org.apache.hadoop.record.compiler.JCompType"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="JVector" type="org.apache.hadoop.record.compiler.JType"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of JVector]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.JVector -->
- <doc>
- <![CDATA[<p>
- (DEPRECATED) This package contains classes needed for code generation
- from the hadoop record compiler. CppGenerator and JavaGenerator
- are the main entry points from the parser. There are classes
- corrsponding to every primitive type and compound type
- included in Hadoop record I/O syntax.
- </p>
-
- <p>
- DEPRECATED: Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.
- </p>]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.record.compiler.ant">
- <!-- start class org.apache.hadoop.record.compiler.ant.RccTask -->
- <class name="RccTask" extends="org.apache.tools.ant.Task"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="RccTask"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates a new instance of RccTask]]>
- </doc>
- </constructor>
- <method name="setLanguage"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="language" type="java.lang.String"/>
- <doc>
- <![CDATA[Sets the output language option
- @param language "java"/"c++"]]>
- </doc>
- </method>
- <method name="setFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="file" type="java.io.File"/>
- <doc>
- <![CDATA[Sets the record definition file attribute
- @param file record definition file]]>
- </doc>
- </method>
- <method name="setFailonerror"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="flag" type="boolean"/>
- <doc>
- <![CDATA[Given multiple files (via fileset), set the error handling behavior
- @param flag true will throw build exception in case of failure (default)]]>
- </doc>
- </method>
- <method name="setDestdir"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <doc>
- <![CDATA[Sets directory where output files will be generated
- @param dir output directory]]>
- </doc>
- </method>
- <method name="addFileset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="set" type="org.apache.tools.ant.types.FileSet"/>
- <doc>
- <![CDATA[Adds a fileset that can consist of one or more files
- @param set Set of record definition files]]>
- </doc>
- </method>
- <method name="execute"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="BuildException" type="org.apache.tools.ant.BuildException"/>
- <doc>
- <![CDATA[Invoke the Hadoop record compiler on each record definition file]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Hadoop record compiler ant Task
- <p> This task takes the given record definition files and compiles them into
- java or c++
- files. It is then up to the user to compile the generated files.
- <p> The task requires the <code>file</code> or the nested fileset element to be
- specified. Optional attributes are <code>language</code> (set the output
- language, default is "java"),
- <code>destdir</code> (name of the destination directory for generated java/c++
- code, default is ".") and <code>failonerror</code> (specifies error handling
- behavior. default is true).
- <p><h4>Usage</h4>
- <pre>
- <recordcc
- destdir="${basedir}/gensrc"
- language="java">
- <fileset include="**\/*.jr" />
- </recordcc>
- </pre>
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.ant.RccTask -->
- </package>
- <package name="org.apache.hadoop.record.compiler.generated">
- <!-- start class org.apache.hadoop.record.compiler.generated.ParseException -->
- <class name="ParseException" extends="java.lang.Exception"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="ParseException" type="org.apache.hadoop.record.compiler.generated.Token, int[][], java.lang.String[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This constructor is used by the method "generateParseException"
- in the generated parser. Calling this constructor generates
- a new object of this type with the fields "currentToken",
- "expectedTokenSequences", and "tokenImage" set. The boolean
- flag "specialConstructor" is also set to true to indicate that
- this constructor was used to create this object.
- This constructor calls its super class with the empty string
- to force the "toString" method of parent class "Throwable" to
- print the error message in the form:
- ParseException: <result of getMessage>]]>
- </doc>
- </constructor>
- <constructor name="ParseException"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The following constructors are for use by you for whatever
- purpose you can think of. Constructing the exception in this
- manner makes the exception behave in the normal way - i.e., as
- documented in the class "Throwable". The fields "errorToken",
- "expectedTokenSequences", and "tokenImage" do not contain
- relevant information. The JavaCC generated code does not use
- these constructors.]]>
- </doc>
- </constructor>
- <constructor name="ParseException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getMessage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This method has the standard behavior when this object has been
- created using the standard constructors. Otherwise, it uses
- "currentToken" and "expectedTokenSequences" to generate a parse
- error message and returns it. If this object has been created
- due to a parse error, and you do not catch it (it gets thrown
- from the parser), then this method is called during the printing
- of the final stack trace, and hence the correct error message
- gets displayed.]]>
- </doc>
- </method>
- <method name="add_escapes" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="str" type="java.lang.String"/>
- <doc>
- <![CDATA[Used to convert raw characters to their escaped version
- when these raw version cannot be used as part of an ASCII
- string literal.]]>
- </doc>
- </method>
- <field name="specialConstructor" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This variable determines which constructor was used to create
- this object and thereby affects the semantics of the
- "getMessage" method (see below).]]>
- </doc>
- </field>
- <field name="currentToken" type="org.apache.hadoop.record.compiler.generated.Token"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This is the last token that has been consumed successfully. If
- this object has been created due to a parse error, the token
- followng this token will (therefore) be the first error token.]]>
- </doc>
- </field>
- <field name="expectedTokenSequences" type="int[][]"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Each entry in this array is an array of integers. Each array
- of integers represents a sequence of tokens (by their ordinal
- values) that is expected at this point of the parse.]]>
- </doc>
- </field>
- <field name="tokenImage" type="java.lang.String[]"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This is a reference to the "tokenImage" array of the generated
- parser within which the parse error occurred. This array is
- defined in the generated ...Constants interface.]]>
- </doc>
- </field>
- <field name="eol" type="java.lang.String"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The end of line string for this machine.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[This exception is thrown when parse errors are encountered.
- You can explicitly create objects of this exception type by
- calling the method generateParseException in the generated
- parser.
- You can modify this class to customize your error reporting
- mechanisms so long as you retain the public fields.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.generated.ParseException -->
- <!-- start class org.apache.hadoop.record.compiler.generated.Rcc -->
- <class name="Rcc" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.compiler.generated.RccConstants"/>
- <constructor name="Rcc" type="java.io.InputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="Rcc" type="java.io.InputStream, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="Rcc" type="java.io.Reader"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="Rcc" type="org.apache.hadoop.record.compiler.generated.RccTokenManager"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="main"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- </method>
- <method name="usage"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="driver" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- </method>
- <method name="Input" return="org.apache.hadoop.record.compiler.JFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="Include" return="org.apache.hadoop.record.compiler.JFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="Module" return="java.util.ArrayList"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="ModuleName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="RecordList" return="java.util.ArrayList"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="Record" return="org.apache.hadoop.record.compiler.JRecord"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="Field" return="org.apache.hadoop.record.compiler.JField"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="Type" return="org.apache.hadoop.record.compiler.JType"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="Map" return="org.apache.hadoop.record.compiler.JMap"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="Vector" return="org.apache.hadoop.record.compiler.JVector"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="ParseException" type="org.apache.hadoop.record.compiler.generated.ParseException"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.InputStream"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.InputStream"/>
- <param name="encoding" type="java.lang.String"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.Reader"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tm" type="org.apache.hadoop.record.compiler.generated.RccTokenManager"/>
- </method>
- <method name="getNextToken" return="org.apache.hadoop.record.compiler.generated.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getToken" return="org.apache.hadoop.record.compiler.generated.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="index" type="int"/>
- </method>
- <method name="generateParseException" return="org.apache.hadoop.record.compiler.generated.ParseException"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="enable_tracing"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="disable_tracing"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- </method>
- <field name="token_source" type="org.apache.hadoop.record.compiler.generated.RccTokenManager"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="token" type="org.apache.hadoop.record.compiler.generated.Token"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="jj_nt" type="org.apache.hadoop.record.compiler.generated.Token"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.generated.Rcc -->
- <!-- start interface org.apache.hadoop.record.compiler.generated.RccConstants -->
- <interface name="RccConstants" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <field name="EOF" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="MODULE_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RECORD_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="INCLUDE_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="BYTE_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="BOOLEAN_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="INT_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="LONG_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FLOAT_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DOUBLE_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="USTRING_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="BUFFER_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="VECTOR_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="MAP_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="LBRACE_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RBRACE_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="LT_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="GT_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="SEMICOLON_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="COMMA_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DOT_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="CSTRING_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="IDENT_TKN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DEFAULT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="WithinOneLineComment" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="WithinMultiLineComment" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="tokenImage" type="java.lang.String[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.record.compiler.generated.RccConstants -->
- <!-- start class org.apache.hadoop.record.compiler.generated.RccTokenManager -->
- <class name="RccTokenManager" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <implements name="org.apache.hadoop.record.compiler.generated.RccConstants"/>
- <constructor name="RccTokenManager" type="org.apache.hadoop.record.compiler.generated.SimpleCharStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="RccTokenManager" type="org.apache.hadoop.record.compiler.generated.SimpleCharStream, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="setDebugStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ds" type="java.io.PrintStream"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="org.apache.hadoop.record.compiler.generated.SimpleCharStream"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="org.apache.hadoop.record.compiler.generated.SimpleCharStream"/>
- <param name="lexState" type="int"/>
- </method>
- <method name="SwitchTo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="lexState" type="int"/>
- </method>
- <method name="jjFillToken" return="org.apache.hadoop.record.compiler.generated.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="getNextToken" return="org.apache.hadoop.record.compiler.generated.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <field name="debugStream" type="java.io.PrintStream"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="jjstrLiteralImages" type="java.lang.String[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="lexStateNames" type="java.lang.String[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="jjnewLexState" type="int[]"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="input_stream" type="org.apache.hadoop.record.compiler.generated.SimpleCharStream"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="curChar" type="char"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.generated.RccTokenManager -->
- <!-- start class org.apache.hadoop.record.compiler.generated.SimpleCharStream -->
- <class name="SimpleCharStream" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="SimpleCharStream" type="java.io.Reader, int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.Reader, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.Reader"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.InputStream, java.lang.String, int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="UnsupportedEncodingException" type="java.io.UnsupportedEncodingException"/>
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.InputStream, int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.InputStream, java.lang.String, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="UnsupportedEncodingException" type="java.io.UnsupportedEncodingException"/>
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.InputStream, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.InputStream, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="UnsupportedEncodingException" type="java.io.UnsupportedEncodingException"/>
- </constructor>
- <constructor name="SimpleCharStream" type="java.io.InputStream"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="setTabSize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- </method>
- <method name="getTabSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="i" type="int"/>
- </method>
- <method name="ExpandBuff"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="wrapAround" type="boolean"/>
- </method>
- <method name="FillBuff"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="BeginToken" return="char"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="UpdateLineColumn"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="c" type="char"/>
- </method>
- <method name="readChar" return="char"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getEndColumn" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getEndLine" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getBeginColumn" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getBeginLine" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="backup"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="amount" type="int"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.Reader"/>
- <param name="startline" type="int"/>
- <param name="startcolumn" type="int"/>
- <param name="buffersize" type="int"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.Reader"/>
- <param name="startline" type="int"/>
- <param name="startcolumn" type="int"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.Reader"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.InputStream"/>
- <param name="encoding" type="java.lang.String"/>
- <param name="startline" type="int"/>
- <param name="startcolumn" type="int"/>
- <param name="buffersize" type="int"/>
- <exception name="UnsupportedEncodingException" type="java.io.UnsupportedEncodingException"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.InputStream"/>
- <param name="startline" type="int"/>
- <param name="startcolumn" type="int"/>
- <param name="buffersize" type="int"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.InputStream"/>
- <param name="encoding" type="java.lang.String"/>
- <exception name="UnsupportedEncodingException" type="java.io.UnsupportedEncodingException"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.InputStream"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.InputStream"/>
- <param name="encoding" type="java.lang.String"/>
- <param name="startline" type="int"/>
- <param name="startcolumn" type="int"/>
- <exception name="UnsupportedEncodingException" type="java.io.UnsupportedEncodingException"/>
- </method>
- <method name="ReInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dstream" type="java.io.InputStream"/>
- <param name="startline" type="int"/>
- <param name="startcolumn" type="int"/>
- </method>
- <method name="GetImage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="GetSuffix" return="char[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="len" type="int"/>
- </method>
- <method name="Done"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="adjustBeginLineColumn"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newLine" type="int"/>
- <param name="newCol" type="int"/>
- <doc>
- <![CDATA[Method to adjust line and column numbers for the start of a token.]]>
- </doc>
- </method>
- <field name="staticFlag" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="bufpos" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="bufline" type="int[]"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="bufcolumn" type="int[]"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="column" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="line" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="prevCharIsCR" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="prevCharIsLF" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="inputStream" type="java.io.Reader"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="buffer" type="char[]"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="maxNextCharInd" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="inBuf" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <field name="tabSize" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[An implementation of interface CharStream, where the stream is assumed to
- contain only ASCII characters (without unicode processing).
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.generated.SimpleCharStream -->
- <!-- start class org.apache.hadoop.record.compiler.generated.Token -->
- <class name="Token" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="Token"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the image.]]>
- </doc>
- </method>
- <method name="newToken" return="org.apache.hadoop.record.compiler.generated.Token"
- abstract="false" native="false" synchronized="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="ofKind" type="int"/>
- <doc>
- <![CDATA[Returns a new Token object, by default. However, if you want, you
- can create and return subclass objects based on the value of ofKind.
- Simply add the cases to the switch for all those special cases.
- For example, if you have a subclass of Token called IDToken that
- you want to create if ofKind is ID, simlpy add something like :
- case MyParserConstants.ID : return new IDToken();
- to the following switch statement. Then you can cast matchedToken
- variable to the appropriate type and use it in your lexical actions.]]>
- </doc>
- </method>
- <field name="kind" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[An integer that describes the kind of this token. This numbering
- system is determined by JavaCCParser, and a table of these numbers is
- stored in the file ...Constants.java.]]>
- </doc>
- </field>
- <field name="beginLine" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[beginLine and beginColumn describe the position of the first character
- of this token; endLine and endColumn describe the position of the
- last character of this token.]]>
- </doc>
- </field>
- <field name="beginColumn" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[beginLine and beginColumn describe the position of the first character
- of this token; endLine and endColumn describe the position of the
- last character of this token.]]>
- </doc>
- </field>
- <field name="endLine" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[beginLine and beginColumn describe the position of the first character
- of this token; endLine and endColumn describe the position of the
- last character of this token.]]>
- </doc>
- </field>
- <field name="endColumn" type="int"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[beginLine and beginColumn describe the position of the first character
- of this token; endLine and endColumn describe the position of the
- last character of this token.]]>
- </doc>
- </field>
- <field name="image" type="java.lang.String"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The string image of the token.]]>
- </doc>
- </field>
- <field name="next" type="org.apache.hadoop.record.compiler.generated.Token"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[A reference to the next regular (non-special) token from the input
- stream. If this is the last token from the input stream, or if the
- token manager has not read tokens beyond this one, this field is
- set to null. This is true only if this token is also a regular
- token. Otherwise, see below for a description of the contents of
- this field.]]>
- </doc>
- </field>
- <field name="specialToken" type="org.apache.hadoop.record.compiler.generated.Token"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This field is used to access special tokens that occur prior to this
- token, but after the immediately preceding regular (non-special) token.
- If there are no such special tokens, this field is set to null.
- When there are more than one such special token, this field refers
- to the last of these special tokens, which in turn refers to the next
- previous special token through its specialToken field, and so on
- until the first special token (whose specialToken field is null).
- The next fields of special tokens refer to other special tokens that
- immediately follow it (without an intervening regular token). If there
- is no such token, this field is null.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Describes the input token stream.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.generated.Token -->
- <!-- start class org.apache.hadoop.record.compiler.generated.TokenMgrError -->
- <class name="TokenMgrError" extends="java.lang.Error"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="TokenMgrError"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="TokenMgrError" type="java.lang.String, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="TokenMgrError" type="boolean, int, int, int, java.lang.String, char, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="addEscapes" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="true" visibility="protected"
- deprecated="not deprecated">
- <param name="str" type="java.lang.String"/>
- <doc>
- <![CDATA[Replaces unprintable characters by their espaced (or unicode escaped)
- equivalents in the given string]]>
- </doc>
- </method>
- <method name="LexicalError" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="EOFSeen" type="boolean"/>
- <param name="lexState" type="int"/>
- <param name="errorLine" type="int"/>
- <param name="errorColumn" type="int"/>
- <param name="errorAfter" type="java.lang.String"/>
- <param name="curChar" type="char"/>
- <doc>
- <![CDATA[Returns a detailed message for the Error when it is thrown by the
- token manager to indicate a lexical error.
- Parameters :
- EOFSeen : indicates if EOF caused the lexicl error
- curLexState : lexical state in which this error occured
- errorLine : line number when the error occured
- errorColumn : column number when the error occured
- errorAfter : prefix that was seen before this error occured
- curchar : the offending character
- Note: You can customize the lexical error message by modifying this method.]]>
- </doc>
- </method>
- <method name="getMessage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[You can also modify the body of this method to customize your error messages.
- For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
- of end-users concern, so you can return something like :
- "Internal Error : Please file a bug report .... "
- from this method for such cases in the release version of your parser.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[@deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.compiler.generated.TokenMgrError -->
- <doc>
- <![CDATA[<p>
- (DEPRECATED) This package contains code generated by JavaCC from the
- Hadoop record syntax file rcc.jj. For details about the
- record file syntax please @see org.apache.hadoop.record.
- </p>
-
- <p>
- DEPRECATED: Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.
- </p>]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.record.meta">
- <!-- start class org.apache.hadoop.record.meta.FieldTypeInfo -->
- <class name="FieldTypeInfo" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="getTypeID" return="org.apache.hadoop.record.meta.TypeID"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the field's TypeID object]]>
- </doc>
- </method>
- <method name="getFieldID" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the field's id (name)]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Two FieldTypeInfos are equal if ach of their fields matches]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[We use a basic hashcode implementation, since this class will likely not
- be used as a hashmap key]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ti" type="org.apache.hadoop.record.meta.FieldTypeInfo"/>
- </method>
- <doc>
- <![CDATA[Represents a type information for a field, which is made up of its
- ID (name) and its type (a TypeID object).
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.meta.FieldTypeInfo -->
- <!-- start class org.apache.hadoop.record.meta.MapTypeID -->
- <class name="MapTypeID" extends="org.apache.hadoop.record.meta.TypeID"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="MapTypeID" type="org.apache.hadoop.record.meta.TypeID, org.apache.hadoop.record.meta.TypeID"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getKeyTypeID" return="org.apache.hadoop.record.meta.TypeID"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the TypeID of the map's key element]]>
- </doc>
- </method>
- <method name="getValueTypeID" return="org.apache.hadoop.record.meta.TypeID"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the TypeID of the map's value element]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Two map typeIDs are equal if their constituent elements have the
- same type]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[We use a basic hashcode implementation, since this class will likely not
- be used as a hashmap key]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Represents typeID for a Map
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.meta.MapTypeID -->
- <!-- start class org.apache.hadoop.record.meta.RecordTypeInfo -->
- <class name="RecordTypeInfo" extends="org.apache.hadoop.record.Record"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="RecordTypeInfo"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an empty RecordTypeInfo object.]]>
- </doc>
- </constructor>
- <constructor name="RecordTypeInfo" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a RecordTypeInfo object representing a record with the given name
- @param name Name of the record]]>
- </doc>
- </constructor>
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[return the name of the record]]>
- </doc>
- </method>
- <method name="setName"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[set the name of the record]]>
- </doc>
- </method>
- <method name="addField"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fieldName" type="java.lang.String"/>
- <param name="tid" type="org.apache.hadoop.record.meta.TypeID"/>
- <doc>
- <![CDATA[Add a field.
- @param fieldName Name of the field
- @param tid Type ID of the field]]>
- </doc>
- </method>
- <method name="getFieldTypeInfos" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a collection of field type infos]]>
- </doc>
- </method>
- <method name="getNestedStructTypeInfo" return="org.apache.hadoop.record.meta.RecordTypeInfo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Return the type info of a nested record. We only consider nesting
- to one level.
- @param name Name of the nested record]]>
- </doc>
- </method>
- <method name="serialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rout" type="org.apache.hadoop.record.RecordOutput"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serialize the type information for a record]]>
- </doc>
- </method>
- <method name="deserialize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rin" type="org.apache.hadoop.record.RecordInput"/>
- <param name="tag" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Deserialize the type information for a record]]>
- </doc>
- </method>
- <method name="compareTo" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="peer_" type="java.lang.Object"/>
- <exception name="ClassCastException" type="java.lang.ClassCastException"/>
- <doc>
- <![CDATA[This class doesn't implement Comparable as it's not meant to be used
- for anything besides de/serializing.
- So we always throw an exception.
- Not implemented. Always returns 0 if another RecordTypeInfo is passed in.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A record's Type Information object which can read/write itself.
-
- Type information for a record comprises metadata about the record,
- as well as a collection of type information for each field in the record.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.meta.RecordTypeInfo -->
- <!-- start class org.apache.hadoop.record.meta.StructTypeID -->
- <class name="StructTypeID" extends="org.apache.hadoop.record.meta.TypeID"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="StructTypeID" type="org.apache.hadoop.record.meta.RecordTypeInfo"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a StructTypeID based on the RecordTypeInfo of some record]]>
- </doc>
- </constructor>
- <method name="getFieldTypeInfos" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Represents typeID for a struct
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.meta.StructTypeID -->
- <!-- start class org.apache.hadoop.record.meta.TypeID -->
- <class name="TypeID" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="getTypeVal" return="byte"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the type value. One of the constants in RIOType.]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Two base typeIDs are equal if they refer to the same type]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[We use a basic hashcode implementation, since this class will likely not
- be used as a hashmap key]]>
- </doc>
- </method>
- <field name="BoolTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constant classes for the basic types, so we can share them.]]>
- </doc>
- </field>
- <field name="BufferTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="ByteTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DoubleTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FloatTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="IntTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="LongTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="StringTypeID" type="org.apache.hadoop.record.meta.TypeID"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="typeVal" type="byte"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Represents typeID for basic types.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.meta.TypeID -->
- <!-- start class org.apache.hadoop.record.meta.Utils -->
- <class name="Utils" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <method name="skip"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="rin" type="org.apache.hadoop.record.RecordInput"/>
- <param name="tag" type="java.lang.String"/>
- <param name="typeID" type="org.apache.hadoop.record.meta.TypeID"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[read/skip bytes from stream based on a type]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Various utility functions for Hadooop record I/O platform.
-
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.meta.Utils -->
- <!-- start class org.apache.hadoop.record.meta.VectorTypeID -->
- <class name="VectorTypeID" extends="org.apache.hadoop.record.meta.TypeID"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="Replaced by lEsS_tHaNa href=quote_cHaRhttp://hadoop.apache.org/avro/quote_cHaR>AvrolEsS_tHaN/a>.">
- <constructor name="VectorTypeID" type="org.apache.hadoop.record.meta.TypeID"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getElementTypeID" return="org.apache.hadoop.record.meta.TypeID"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Two vector typeIDs are equal if their constituent elements have the
- same type]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[We use a basic hashcode implementation, since this class will likely not
- be used as a hashmap key]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Represents typeID for vector.
- @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.record.meta.VectorTypeID -->
- </package>
- <package name="org.apache.hadoop.security">
- <!-- start class org.apache.hadoop.security.AccessControlException -->
- <class name="AccessControlException" extends="org.apache.hadoop.fs.permission.AccessControlException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="AccessControlException"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default constructor is needed for unwrapping from
- {@link org.apache.hadoop.ipc.RemoteException}.]]>
- </doc>
- </constructor>
- <constructor name="AccessControlException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs an {@link AccessControlException}
- with the specified detail message.
- @param s the detail message.]]>
- </doc>
- </constructor>
- <constructor name="AccessControlException" type="java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs a new exception with the specified cause and a detail
- message of <tt>(cause==null ? null : cause.toString())</tt> (which
- typically contains the class and detail message of <tt>cause</tt>).
- @param cause the cause (which is saved for later retrieval by the
- {@link #getCause()} method). (A <tt>null</tt> value is
- permitted, and indicates that the cause is nonexistent or
- unknown.)]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[An exception class for access control related issues.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.AccessControlException -->
- <!-- start class org.apache.hadoop.security.Credentials -->
- <class name="Credentials" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="Credentials"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an empty credentials instance]]>
- </doc>
- </constructor>
- <constructor name="Credentials" type="org.apache.hadoop.security.Credentials"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a copy of the given credentials
- @param credentials to copy]]>
- </doc>
- </constructor>
- <method name="getToken" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="alias" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[Returns the Token object for the alias
- @param alias the alias for the Token
- @return token for this alias]]>
- </doc>
- </method>
- <method name="addToken"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="alias" type="org.apache.hadoop.io.Text"/>
- <param name="t" type="org.apache.hadoop.security.token.Token"/>
- <doc>
- <![CDATA[Add a token in the storage (in memory)
- @param alias the alias for the key
- @param t the token object]]>
- </doc>
- </method>
- <method name="getAllTokens" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return all the tokens in the in-memory map]]>
- </doc>
- </method>
- <method name="numberOfTokens" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return number of Tokens in the in-memory map]]>
- </doc>
- </method>
- <method name="getSecretKey" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="alias" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[Returns the key bytes for the alias
- @param alias the alias for the key
- @return key for this alias]]>
- </doc>
- </method>
- <method name="numberOfSecretKeys" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return number of keys in the in-memory map]]>
- </doc>
- </method>
- <method name="addSecretKey"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="alias" type="org.apache.hadoop.io.Text"/>
- <param name="key" type="byte[]"/>
- <doc>
- <![CDATA[Set the key for an alias
- @param alias the alias for the key
- @param key the key bytes]]>
- </doc>
- </method>
- <method name="removeSecretKey"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="alias" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[Remove the key for a given alias.
- @param alias the alias for the key]]>
- </doc>
- </method>
- <method name="getAllSecretKeys" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return all the secret key entries in the in-memory map]]>
- </doc>
- </method>
- <method name="readTokenStorageFile" return="org.apache.hadoop.security.Credentials"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filename" type="org.apache.hadoop.fs.Path"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convenience method for reading a token storage file, and loading the Tokens
- therein in the passed UGI
- @param filename
- @param conf
- @throws IOException]]>
- </doc>
- </method>
- <method name="readTokenStorageFile" return="org.apache.hadoop.security.Credentials"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filename" type="java.io.File"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convenience method for reading a token storage file, and loading the Tokens
- therein in the passed UGI
- @param filename
- @param conf
- @throws IOException]]>
- </doc>
- </method>
- <method name="readTokenStorageStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convenience method for reading a token storage file directly from a
- datainputstream]]>
- </doc>
- </method>
- <method name="writeTokenStorageToStream"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="os" type="java.io.DataOutputStream"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="writeTokenStorageFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filename" type="org.apache.hadoop.fs.Path"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Stores all the keys to DataOutput
- @param out
- @throws IOException]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Loads all the keys
- @param in
- @throws IOException]]>
- </doc>
- </method>
- <method name="addAll"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="org.apache.hadoop.security.Credentials"/>
- <doc>
- <![CDATA[Copy all of the credentials from one credential object into another.
- Existing secrets and tokens are overwritten.
- @param other the credentials to copy]]>
- </doc>
- </method>
- <method name="mergeAll"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="other" type="org.apache.hadoop.security.Credentials"/>
- <doc>
- <![CDATA[Copy all of the credentials from one credential object into another.
- Existing secrets and tokens are not overwritten.
- @param other the credentials to copy]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A class that provides the facilities of reading and writing
- secret keys and Tokens.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.Credentials -->
- <!-- start interface org.apache.hadoop.security.GroupMappingServiceProvider -->
- <interface name="GroupMappingServiceProvider" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getGroups" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get all various group memberships of a given user.
- Returns EMPTY list in case of non-existing user
- @param user User's name
- @return group memberships of user
- @throws IOException]]>
- </doc>
- </method>
- <method name="cacheGroupsRefresh"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Refresh the cache of groups and user mapping
- @throws IOException]]>
- </doc>
- </method>
- <method name="cacheGroupsAdd"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="groups" type="java.util.List"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Caches the group user information
- @param groups list of groups to add to cache
- @throws IOException]]>
- </doc>
- </method>
- <field name="GROUP_MAPPING_CONFIG_PREFIX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[An interface for the implementation of a user-to-groups mapping service
- used by {@link Groups}.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.security.GroupMappingServiceProvider -->
- <!-- start interface org.apache.hadoop.security.IdMappingServiceProvider -->
- <interface name="IdMappingServiceProvider" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getUid" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getGid" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="group" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getUserName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uid" type="int"/>
- <param name="unknown" type="java.lang.String"/>
- </method>
- <method name="getGroupName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="gid" type="int"/>
- <param name="unknown" type="java.lang.String"/>
- </method>
- <method name="getUidAllowingUnknown" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- </method>
- <method name="getGidAllowingUnknown" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="group" type="java.lang.String"/>
- </method>
- <doc>
- <![CDATA[An interface for the implementation of <userId, userName> mapping
- and <groupId, groupName> mapping]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.security.IdMappingServiceProvider -->
- <!-- start class org.apache.hadoop.security.KerberosAuthException -->
- <class name="KerberosAuthException" extends="java.io.IOException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="KerberosAuthException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="KerberosAuthException" type="java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="KerberosAuthException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="setUser"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="u" type="java.lang.String"/>
- </method>
- <method name="setPrincipal"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="p" type="java.lang.String"/>
- </method>
- <method name="setKeytabFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="k" type="java.lang.String"/>
- </method>
- <method name="setTicketCacheFile"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="t" type="java.lang.String"/>
- </method>
- <method name="getInitialMessage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return The initial message, or null if not set.]]>
- </doc>
- </method>
- <method name="getKeytabFile" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return The keytab file path, or null if not set.]]>
- </doc>
- </method>
- <method name="getPrincipal" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return The principal, or null if not set.]]>
- </doc>
- </method>
- <method name="getTicketCacheFile" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return The ticket cache file path, or null if not set.]]>
- </doc>
- </method>
- <method name="getUser" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return The user, or null if not set.]]>
- </doc>
- </method>
- <method name="getMessage" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[Thrown when {@link UserGroupInformation} failed with an unrecoverable error,
- such as failure in kerberos login/logout, invalid subject etc.
- Caller should not retry when catching this exception.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.KerberosAuthException -->
- <!-- start class org.apache.hadoop.security.SecurityUtil -->
- <class name="SecurityUtil" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="setConfiguration"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="isOriginalTGT" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="ticket" type="javax.security.auth.kerberos.KerberosTicket"/>
- <doc>
- <![CDATA[Check whether the server principal is the TGS's principal
- @param ticket the original TGT (the ticket that is obtained when a
- kinit is done)
- @return true or false]]>
- </doc>
- </method>
- <method name="getServerPrincipal" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="principalConfig" type="java.lang.String"/>
- <param name="hostname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convert Kerberos principal name pattern to valid Kerberos principal
- names. It replaces hostname pattern with hostname, which should be
- fully-qualified domain name. If hostname is null or "0.0.0.0", it uses
- dynamically looked-up fqdn of the current host instead.
-
- @param principalConfig
- the Kerberos principal name conf value to convert
- @param hostname
- the fully-qualified domain name used for substitution
- @return converted Kerberos principal name
- @throws IOException if the client address cannot be determined]]>
- </doc>
- </method>
- <method name="getServerPrincipal" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="principalConfig" type="java.lang.String"/>
- <param name="addr" type="java.net.InetAddress"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Convert Kerberos principal name pattern to valid Kerberos principal names.
- This method is similar to {@link #getServerPrincipal(String, String)},
- except 1) the reverse DNS lookup from addr to hostname is done only when
- necessary, 2) param addr can't be null (no default behavior of using local
- hostname when addr is null).
-
- @param principalConfig
- Kerberos principal name pattern to convert
- @param addr
- InetAddress of the host used for substitution
- @return converted Kerberos principal name
- @throws IOException if the client address cannot be determined]]>
- </doc>
- </method>
- <method name="login"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="keytabFileKey" type="java.lang.String"/>
- <param name="userNameKey" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Login as a principal specified in config. Substitute $host in
- user's Kerberos principal name with a dynamically looked-up fully-qualified
- domain name of the current host.
-
- @param conf
- conf to use
- @param keytabFileKey
- the key to look for keytab file in conf
- @param userNameKey
- the key to look for user's Kerberos principal name in conf
- @throws IOException if login fails]]>
- </doc>
- </method>
- <method name="login"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="keytabFileKey" type="java.lang.String"/>
- <param name="userNameKey" type="java.lang.String"/>
- <param name="hostname" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Login as a principal specified in config. Substitute $host in user's Kerberos principal
- name with hostname. If non-secure mode - return. If no keytab available -
- bail out with an exception
-
- @param conf
- conf to use
- @param keytabFileKey
- the key to look for keytab file in conf
- @param userNameKey
- the key to look for user's Kerberos principal name in conf
- @param hostname
- hostname to use for substitution
- @throws IOException if the config doesn't specify a keytab]]>
- </doc>
- </method>
- <method name="buildDTServiceName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <param name="defPort" type="int"/>
- <doc>
- <![CDATA[create the service name for a Delegation token
- @param uri of the service
- @param defPort is used if the uri lacks a port
- @return the token service, or null if no authority
- @see #buildTokenService(InetSocketAddress)]]>
- </doc>
- </method>
- <method name="getHostFromPrincipal" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="principalName" type="java.lang.String"/>
- <doc>
- <![CDATA[Get the host name from the principal name of format <service>/host@realm.
- @param principalName principal name of format as described above
- @return host name if the the string conforms to the above format, else null]]>
- </doc>
- </method>
- <method name="getKerberosInfo" return="org.apache.hadoop.security.KerberosInfo"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="protocol" type="java.lang.Class"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Look up the KerberosInfo for a given protocol. It searches all known
- SecurityInfo providers.
- @param protocol the protocol class to get the information for
- @param conf configuration object
- @return the KerberosInfo or null if it has no KerberosInfo defined]]>
- </doc>
- </method>
- <method name="getTokenInfo" return="org.apache.hadoop.security.token.TokenInfo"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="protocol" type="java.lang.Class"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Look up the TokenInfo for a given protocol. It searches all known
- SecurityInfo providers.
- @param protocol The protocol class to get the information for.
- @param conf Configuration object
- @return the TokenInfo or null if it has no KerberosInfo defined]]>
- </doc>
- </method>
- <method name="getTokenServiceAddr" return="java.net.InetSocketAddress"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <doc>
- <![CDATA[Decode the given token's service field into an InetAddress
- @param token from which to obtain the service
- @return InetAddress for the service]]>
- </doc>
- </method>
- <method name="setTokenService"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <param name="addr" type="java.net.InetSocketAddress"/>
- <doc>
- <![CDATA[Set the given token's service to the format expected by the RPC client
- @param token a delegation token
- @param addr the socket for the rpc connection]]>
- </doc>
- </method>
- <method name="buildTokenService" return="org.apache.hadoop.io.Text"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="addr" type="java.net.InetSocketAddress"/>
- <doc>
- <![CDATA[Construct the service key for a token
- @param addr InetSocketAddress of remote connection with a token
- @return "ip:port" or "host:port" depending on the value of
- hadoop.security.token.service.use_ip]]>
- </doc>
- </method>
- <method name="buildTokenService" return="org.apache.hadoop.io.Text"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="uri" type="java.net.URI"/>
- <doc>
- <![CDATA[Construct the service key for a token
- @param uri of remote connection with a token
- @return "ip:port" or "host:port" depending on the value of
- hadoop.security.token.service.use_ip]]>
- </doc>
- </method>
- <method name="doAsLoginUserOrFatal" return="T"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="action" type="java.security.PrivilegedAction"/>
- <doc>
- <![CDATA[Perform the given action as the daemon's login user. If the login
- user cannot be determined, this will log a FATAL error and exit
- the whole JVM.]]>
- </doc>
- </method>
- <method name="doAsLoginUser" return="T"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="action" type="java.security.PrivilegedExceptionAction"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Perform the given action as the daemon's login user. If an
- InterruptedException is thrown, it is converted to an IOException.
- @param action the action to perform
- @return the result of the action
- @throws IOException in the event of error]]>
- </doc>
- </method>
- <method name="doAsCurrentUser" return="T"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="action" type="java.security.PrivilegedExceptionAction"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Perform the given action as the daemon's current user. If an
- InterruptedException is thrown, it is converted to an IOException.
- @param action the action to perform
- @return the result of the action
- @throws IOException in the event of error]]>
- </doc>
- </method>
- <method name="getAuthenticationMethod" return="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="setAuthenticationMethod"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="authenticationMethod" type="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="isPrivilegedPort" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="port" type="int"/>
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HOSTNAME_PATTERN" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FAILED_TO_GET_UGI_MSG_HEADER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Security Utils.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.SecurityUtil -->
- <!-- start class org.apache.hadoop.security.UserGroupInformation -->
- <class name="UserGroupInformation" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="setShouldRenewImmediatelyForTests"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="immediate" type="boolean"/>
- <doc>
- <![CDATA[For the purposes of unit tests, we want to test login
- from keytab and don't want to wait until the renew
- window (controlled by TICKET_RENEW_WINDOW).
- @param immediate true if we should login without waiting for ticket window]]>
- </doc>
- </method>
- <method name="reattachMetrics"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Reattach the class's metrics to a new metric system.]]>
- </doc>
- </method>
- <method name="isInitialized" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConfiguration"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Set the static configuration for UGI.
- In particular, set the security authentication mechanism and the
- group look up service.
- @param conf the configuration to use]]>
- </doc>
- </method>
- <method name="isSecurityEnabled" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Determine if UserGroupInformation is using Kerberos to determine
- user identities or is relying on simple authentication
-
- @return true if UGI is working in a secure environment]]>
- </doc>
- </method>
- <method name="hasKerberosCredentials" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[checks if logged in using kerberos
- @return true if the subject logged via keytab or has a Kerberos TGT]]>
- </doc>
- </method>
- <method name="getCurrentUser" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Return the current user, including any doAs in the current stack.
- @return the current user
- @throws IOException if login fails]]>
- </doc>
- </method>
- <method name="getBestUGI" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ticketCachePath" type="java.lang.String"/>
- <param name="user" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Find the most appropriate UserGroupInformation to use
- @param ticketCachePath The Kerberos ticket cache path, or NULL
- if none is specfied
- @param user The user name, or NULL if none is specified.
- @return The most appropriate UserGroupInformation]]>
- </doc>
- </method>
- <method name="getUGIFromTicketCache" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ticketCache" type="java.lang.String"/>
- <param name="user" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a UserGroupInformation from a Kerberos ticket cache.
-
- @param user The principal name to load from the ticket
- cache
- @param ticketCache the path to the ticket cache file
- @throws IOException if the kerberos login fails]]>
- </doc>
- </method>
- <method name="getUGIFromSubject" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="subject" type="javax.security.auth.Subject"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a UserGroupInformation from a Subject with Kerberos principal.
- @param subject The KerberosPrincipal to use in UGI
- @throws IOException
- @throws KerberosAuthException if the kerberos login fails]]>
- </doc>
- </method>
- <method name="getLoginUser" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the currently logged in user.
- @return the logged in user
- @throws IOException if login fails]]>
- </doc>
- </method>
- <method name="trimLoginMethod" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="userName" type="java.lang.String"/>
- <doc>
- <![CDATA[remove the login method that is followed by a space from the username
- e.g. "jack (auth:SIMPLE)" -> "jack"
- @param userName
- @return userName without login method]]>
- </doc>
- </method>
- <method name="loginUserFromSubject"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="subject" type="javax.security.auth.Subject"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Log in a user using the given subject
- @param subject the subject to use when logging in a user, or null to
- create a new subject.
- @throws IOException if login fails]]>
- </doc>
- </method>
- <method name="isFromKeytab" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Is this user logged in from a keytab file?
- @return true if the credentials are from a keytab file.]]>
- </doc>
- </method>
- <method name="loginUserFromKeytab"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <param name="path" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Log a user in from a keytab file. Loads a user identity from a keytab
- file and logs them in. They become the currently logged-in user.
- @param user the principal name to load from the keytab
- @param path the path to the keytab file
- @throws IOException
- @throws KerberosAuthException if it's a kerberos login exception.]]>
- </doc>
- </method>
- <method name="logoutUserFromKeytab"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Log the current user out who previously logged in using keytab.
- This method assumes that the user logged in by calling
- {@link #loginUserFromKeytab(String, String)}.
- @throws IOException
- @throws KerberosAuthException if a failure occurred in logout,
- or if the user did not log in by invoking loginUserFromKeyTab() before.]]>
- </doc>
- </method>
- <method name="checkTGTAndReloginFromKeytab"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Re-login a user from keytab if TGT is expired or is close to expiry.
-
- @throws IOException
- @throws KerberosAuthException if it's a kerberos login exception.]]>
- </doc>
- </method>
- <method name="reloginFromKeytab"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Re-Login a user in from a keytab file. Loads a user identity from a keytab
- file and logs them in. They become the currently logged-in user. This
- method assumes that {@link #loginUserFromKeytab(String, String)} had
- happened already. The Subject field of this UserGroupInformation object is
- updated to have the new credentials.
- @throws IOException
- @throws KerberosAuthException on a failure]]>
- </doc>
- </method>
- <method name="forceReloginFromKeytab"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Force re-Login a user in from a keytab file irrespective of the last login
- time. Loads a user identity from a keytab file and logs them in. They
- become the currently logged-in user. This method assumes that
- {@link #loginUserFromKeytab(String, String)} had happened already. The
- Subject field of this UserGroupInformation object is updated to have the
- new credentials.
- @throws IOException
- @throws KerberosAuthException on a failure]]>
- </doc>
- </method>
- <method name="reloginFromTicketCache"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Re-Login a user in from the ticket cache. This
- method assumes that login had happened already.
- The Subject field of this UserGroupInformation object is updated to have
- the new credentials.
- @throws IOException
- @throws KerberosAuthException on a failure]]>
- </doc>
- </method>
- <method name="loginUserFromKeytabAndReturnUGI" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <param name="path" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Log a user in from a keytab file. Loads a user identity from a keytab
- file and login them in. This new user does not affect the currently
- logged-in user.
- @param user the principal name to load from the keytab
- @param path the path to the keytab file
- @throws IOException if the keytab file can't be read]]>
- </doc>
- </method>
- <method name="isLoginKeytabBased" return="boolean"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Did the login happen via keytab
- @return true or false]]>
- </doc>
- </method>
- <method name="isLoginTicketBased" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Did the login happen via ticket cache
- @return true or false]]>
- </doc>
- </method>
- <method name="createRemoteUser" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <doc>
- <![CDATA[Create a user from a login name. It is intended to be used for remote
- users in RPC, since it won't have any credentials.
- @param user the full user principal name, must not be empty or null
- @return the UserGroupInformation for the remote user.]]>
- </doc>
- </method>
- <method name="createRemoteUser" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <param name="authMethod" type="org.apache.hadoop.security.SaslRpcServer.AuthMethod"/>
- <doc>
- <![CDATA[Create a user from a login name. It is intended to be used for remote
- users in RPC, since it won't have any credentials.
- @param user the full user principal name, must not be empty or null
- @return the UserGroupInformation for the remote user.]]>
- </doc>
- </method>
- <method name="createProxyUser" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <param name="realUser" type="org.apache.hadoop.security.UserGroupInformation"/>
- <doc>
- <![CDATA[Create a proxy user using username of the effective user and the ugi of the
- real user.
- @param user
- @param realUser
- @return proxyUser ugi]]>
- </doc>
- </method>
- <method name="getRealUser" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get RealUser (vs. EffectiveUser)
- @return realUser running over proxy user]]>
- </doc>
- </method>
- <method name="getRealUserOrSelf" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="org.apache.hadoop.security.UserGroupInformation"/>
- <doc>
- <![CDATA[If this is a proxy user, get the real user. Otherwise, return
- this user.
- @param user the user to check
- @return the real user or self]]>
- </doc>
- </method>
- <method name="createUserForTesting" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <param name="userGroups" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Create a UGI for testing HDFS and MapReduce
- @param user the full user principal name
- @param userGroups the names of the groups that the user belongs to
- @return a fake user for running unit tests]]>
- </doc>
- </method>
- <method name="createProxyUserForTesting" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <param name="realUser" type="org.apache.hadoop.security.UserGroupInformation"/>
- <param name="userGroups" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Create a proxy user UGI for testing HDFS and MapReduce
-
- @param user
- the full user principal name for effective user
- @param realUser
- UGI of the real user
- @param userGroups
- the names of the groups that the user belongs to
- @return a fake user for running unit tests]]>
- </doc>
- </method>
- <method name="getShortUserName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the user's login name.
- @return the user's name up to the first '/' or '@'.]]>
- </doc>
- </method>
- <method name="getPrimaryGroupName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getUserName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the user's full principal name.
- @return the user's full principal name.]]>
- </doc>
- </method>
- <method name="addTokenIdentifier" return="boolean"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tokenId" type="org.apache.hadoop.security.token.TokenIdentifier"/>
- <doc>
- <![CDATA[Add a TokenIdentifier to this UGI. The TokenIdentifier has typically been
- authenticated by the RPC layer as belonging to the user represented by this
- UGI.
-
- @param tokenId
- tokenIdentifier to be added
- @return true on successful add of new tokenIdentifier]]>
- </doc>
- </method>
- <method name="getTokenIdentifiers" return="java.util.Set"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the set of TokenIdentifiers belonging to this UGI
-
- @return the set of TokenIdentifiers belonging to this UGI]]>
- </doc>
- </method>
- <method name="addToken" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <doc>
- <![CDATA[Add a token to this UGI
-
- @param token Token to be added
- @return true on successful add of new token]]>
- </doc>
- </method>
- <method name="addToken" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="alias" type="org.apache.hadoop.io.Text"/>
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <doc>
- <![CDATA[Add a named token to this UGI
-
- @param alias Name of the token
- @param token Token to be added
- @return true on successful add of new token]]>
- </doc>
- </method>
- <method name="getTokens" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the collection of tokens associated with this user.
-
- @return an unmodifiable collection of tokens associated with user]]>
- </doc>
- </method>
- <method name="getCredentials" return="org.apache.hadoop.security.Credentials"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the tokens in credentials form associated with this user.
-
- @return Credentials of tokens associated with this user]]>
- </doc>
- </method>
- <method name="addCredentials"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="credentials" type="org.apache.hadoop.security.Credentials"/>
- <doc>
- <![CDATA[Add the given Credentials to this user.
- @param credentials of tokens and secrets]]>
- </doc>
- </method>
- <method name="getGroupNames" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the group names for this user. {@link #getGroups()} is less
- expensive alternative when checking for a contained element.
- @return the list of users with the primary group first. If the command
- fails, it returns an empty list.]]>
- </doc>
- </method>
- <method name="getGroups" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the group names for this user.
- @return the list of users with the primary group first. If the command
- fails, it returns an empty list.]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the username.]]>
- </doc>
- </method>
- <method name="setAuthenticationMethod"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="authMethod" type="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"/>
- <doc>
- <![CDATA[Sets the authentication method in the subject
-
- @param authMethod]]>
- </doc>
- </method>
- <method name="setAuthenticationMethod"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="authMethod" type="org.apache.hadoop.security.SaslRpcServer.AuthMethod"/>
- <doc>
- <![CDATA[Sets the authentication method in the subject
-
- @param authMethod]]>
- </doc>
- </method>
- <method name="getAuthenticationMethod" return="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the authentication method from the subject
-
- @return AuthenticationMethod in the subject, null if not present.]]>
- </doc>
- </method>
- <method name="getRealAuthenticationMethod" return="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the authentication method from the real user's subject. If there
- is no real user, return the given user's authentication method.
-
- @return AuthenticationMethod in the subject, null if not present.]]>
- </doc>
- </method>
- <method name="getRealAuthenticationMethod" return="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ugi" type="org.apache.hadoop.security.UserGroupInformation"/>
- <doc>
- <![CDATA[Returns the authentication method of a ugi. If the authentication method is
- PROXY, returns the authentication method of the real user.
-
- @param ugi
- @return AuthenticationMethod]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="java.lang.Object"/>
- <doc>
- <![CDATA[Compare the subjects to see if they are equal to each other.]]>
- </doc>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return the hash of the subject.]]>
- </doc>
- </method>
- <method name="getSubject" return="javax.security.auth.Subject"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the underlying subject from this ugi.
- @return the subject that represents this user.]]>
- </doc>
- </method>
- <method name="doAs" return="T"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="action" type="java.security.PrivilegedAction"/>
- <doc>
- <![CDATA[Run the given action as the user.
- @param <T> the return type of the run method
- @param action the method to execute
- @return the value from the run method]]>
- </doc>
- </method>
- <method name="doAs" return="T"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="action" type="java.security.PrivilegedExceptionAction"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Run the given action as the user, potentially throwing an exception.
- @param <T> the return type of the run method
- @param action the method to execute
- @return the value from the run method
- @throws IOException if the action throws an IOException
- @throws Error if the action throws an Error
- @throws RuntimeException if the action throws a RuntimeException
- @throws InterruptedException if the action throws an InterruptedException
- @throws UndeclaredThrowableException if the action throws something else]]>
- </doc>
- </method>
- <method name="logAllUserInfo"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ugi" type="org.apache.hadoop.security.UserGroupInformation"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Log all (current, real, login) UGI and token info into UGI debug log.
- @param ugi - UGI
- @throws IOException]]>
- </doc>
- </method>
- <method name="main"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[A test method to print out the current user's UGI.
- @param args if there are two arguments, read the user from the keytab
- and print it out.
- @throws Exception]]>
- </doc>
- </method>
- <field name="HADOOP_TOKEN_FILE_LOCATION" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Environment variable pointing to the token cache file]]>
- </doc>
- </field>
- <doc>
- <![CDATA[User and group information for Hadoop.
- This class wraps around a JAAS Subject and provides methods to determine the
- user's username and groups. It supports both the Windows, Unix and Kerberos
- login modules.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.UserGroupInformation -->
- <!-- start class org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod -->
- <class name="UserGroupInformation.AuthenticationMethod" extends="java.lang.Enum"
- abstract="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="values" return="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="getAuthMethod" return="org.apache.hadoop.security.SaslRpcServer.AuthMethod"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="valueOf" return="org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="authMethod" type="org.apache.hadoop.security.SaslRpcServer.AuthMethod"/>
- </method>
- <doc>
- <![CDATA[existing types of authentications' methods]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod -->
- </package>
- <package name="org.apache.hadoop.security.alias">
- <!-- start class org.apache.hadoop.security.alias.CredentialProvider -->
- <class name="CredentialProvider" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CredentialProvider"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="isTransient" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Indicates whether this provider represents a store
- that is intended for transient use - such as the UserProvider
- is. These providers are generally used to provide job access to
- passwords rather than for long term storage.
- @return true if transient, false otherwise]]>
- </doc>
- </method>
- <method name="flush"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Ensures that any changes to the credentials are written to persistent
- store.
- @throws IOException]]>
- </doc>
- </method>
- <method name="getCredentialEntry" return="org.apache.hadoop.security.alias.CredentialProvider.CredentialEntry"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="alias" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the credential entry for a specific alias.
- @param alias the name of a specific credential
- @return the credentialEntry
- @throws IOException]]>
- </doc>
- </method>
- <method name="getAliases" return="java.util.List"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the aliases for all credentials.
- @return the list of alias names
- @throws IOException]]>
- </doc>
- </method>
- <method name="createCredentialEntry" return="org.apache.hadoop.security.alias.CredentialProvider.CredentialEntry"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="credential" type="char[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Create a new credential. The given alias must not already exist.
- @param name the alias of the credential
- @param credential the credential value for the alias.
- @throws IOException]]>
- </doc>
- </method>
- <method name="deleteCredentialEntry"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Delete the given credential.
- @param name the alias of the credential to delete
- @throws IOException]]>
- </doc>
- </method>
- <method name="needsPassword" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Does this provider require a password? This means that a password is
- required for normal operation, and it has not been found through normal
- means. If true, the password should be provided by the caller using
- setPassword().
- @return Whether or not the provider requires a password
- @throws IOException]]>
- </doc>
- </method>
- <method name="noPasswordWarning" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[If a password for the provider is needed, but is not provided, this will
- return a warning and instructions for supplying said password to the
- provider.
- @return A warning and instructions for supplying the password]]>
- </doc>
- </method>
- <method name="noPasswordError" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[If a password for the provider is needed, but is not provided, this will
- return an error message and instructions for supplying said password to
- the provider.
- @return An error message and instructions for supplying the password]]>
- </doc>
- </method>
- <field name="CLEAR_TEXT_FALLBACK" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A provider of credentials or password for Hadoop applications. Provides an
- abstraction to separate credential storage from users of them. It
- is intended to support getting or storing passwords in a variety of ways,
- including third party bindings.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.alias.CredentialProvider -->
- <!-- start class org.apache.hadoop.security.alias.CredentialProviderFactory -->
- <class name="CredentialProviderFactory" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CredentialProviderFactory"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="createProvider" return="org.apache.hadoop.security.alias.CredentialProvider"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="providerName" type="java.net.URI"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getProviders" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <field name="CREDENTIAL_PROVIDER_PATH" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[A factory to create a list of CredentialProvider based on the path given in a
- Configuration. It uses a service loader interface to find the available
- CredentialProviders and create them based on the list of URIs.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.alias.CredentialProviderFactory -->
- </package>
- <package name="org.apache.hadoop.security.authorize">
- <!-- start class org.apache.hadoop.security.authorize.AccessControlList -->
- <class name="AccessControlList" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="AccessControlList"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[This constructor exists primarily for AccessControlList to be Writable.]]>
- </doc>
- </constructor>
- <constructor name="AccessControlList" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a new ACL from a String representation of the same.
-
- The String is a a comma separated list of users and groups.
- The user list comes first and is separated by a space followed
- by the group list. For e.g. "user1,user2 group1,group2"
-
- @param aclString String representation of the ACL]]>
- </doc>
- </constructor>
- <constructor name="AccessControlList" type="java.lang.String, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a new ACL from String representation of users and groups
-
- The arguments are comma separated lists
-
- @param users comma separated list of users
- @param groups comma separated list of groups]]>
- </doc>
- </constructor>
- <method name="isAllAllowed" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="addUser"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <doc>
- <![CDATA[Add user to the names of users allowed for this service.
-
- @param user
- The user name]]>
- </doc>
- </method>
- <method name="addGroup"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="group" type="java.lang.String"/>
- <doc>
- <![CDATA[Add group to the names of groups allowed for this service.
-
- @param group
- The group name]]>
- </doc>
- </method>
- <method name="removeUser"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <doc>
- <![CDATA[Remove user from the names of users allowed for this service.
-
- @param user
- The user name]]>
- </doc>
- </method>
- <method name="removeGroup"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="group" type="java.lang.String"/>
- <doc>
- <![CDATA[Remove group from the names of groups allowed for this service.
-
- @param group
- The group name]]>
- </doc>
- </method>
- <method name="getUsers" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the names of users allowed for this service.
- @return the set of user names. the set must not be modified.]]>
- </doc>
- </method>
- <method name="getGroups" return="java.util.Collection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the names of user groups allowed for this service.
- @return the set of group names. the set must not be modified.]]>
- </doc>
- </method>
- <method name="isUserInList" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="ugi" type="org.apache.hadoop.security.UserGroupInformation"/>
- <doc>
- <![CDATA[Checks if a user represented by the provided {@link UserGroupInformation}
- is a member of the Access Control List. If user was proxied and
- USE_REAL_ACLS + the real user name is in the control list, then treat this
- case as if user were in the ACL list.
- @param ugi UserGroupInformation to check if contained in the ACL
- @return true if ugi is member of the list or if USE_REAL_ACLS + real user
- is in the list]]>
- </doc>
- </method>
- <method name="isUserAllowed" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ugi" type="org.apache.hadoop.security.UserGroupInformation"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns descriptive way of users and groups that are part of this ACL.
- Use {@link #getAclString()} to get the exact String that can be given to
- the constructor of AccessControlList to create a new instance.]]>
- </doc>
- </method>
- <method name="getAclString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the access control list as a String that can be used for building a
- new instance by sending it to the constructor of {@link AccessControlList}.]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Serializes the AccessControlList object]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Deserializes the AccessControlList object]]>
- </doc>
- </method>
- <field name="WILDCARD_ACL_VALUE" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="USE_REAL_ACLS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Class representing a configured access control list.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.authorize.AccessControlList -->
- <!-- start class org.apache.hadoop.security.authorize.AuthorizationException -->
- <class name="AuthorizationException" extends="org.apache.hadoop.security.AccessControlException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="AuthorizationException"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="AuthorizationException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="AuthorizationException" type="java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructs a new exception with the specified cause and a detail
- message of <tt>(cause==null ? null : cause.toString())</tt> (which
- typically contains the class and detail message of <tt>cause</tt>).
- @param cause the cause (which is saved for later retrieval by the
- {@link #getCause()} method). (A <tt>null</tt> value is
- permitted, and indicates that the cause is nonexistent or
- unknown.)]]>
- </doc>
- </constructor>
- <method name="getStackTrace" return="java.lang.StackTraceElement[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="printStackTrace"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="printStackTrace"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="s" type="java.io.PrintStream"/>
- </method>
- <method name="printStackTrace"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="s" type="java.io.PrintWriter"/>
- </method>
- <doc>
- <![CDATA[An exception class for authorization-related issues.
-
- This class <em>does not</em> provide the stack trace for security purposes.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.authorize.AuthorizationException -->
- <!-- start class org.apache.hadoop.security.authorize.DefaultImpersonationProvider -->
- <class name="DefaultImpersonationProvider" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.security.authorize.ImpersonationProvider"/>
- <constructor name="DefaultImpersonationProvider"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getTestProvider" return="org.apache.hadoop.security.authorize.DefaultImpersonationProvider"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="configurationPrefix" type="java.lang.String"/>
- </method>
- <method name="getConf" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="authorize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="org.apache.hadoop.security.UserGroupInformation"/>
- <param name="remoteAddress" type="java.lang.String"/>
- <exception name="AuthorizationException" type="org.apache.hadoop.security.authorize.AuthorizationException"/>
- </method>
- <method name="getProxySuperuserUserConfKey" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="userName" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns configuration key for effective usergroups allowed for a superuser
-
- @param userName name of the superuser
- @return configuration key for superuser usergroups]]>
- </doc>
- </method>
- <method name="getProxySuperuserGroupConfKey" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="userName" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns configuration key for effective groups allowed for a superuser
-
- @param userName name of the superuser
- @return configuration key for superuser groups]]>
- </doc>
- </method>
- <method name="getProxySuperuserIpConfKey" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="userName" type="java.lang.String"/>
- <doc>
- <![CDATA[Return configuration key for superuser ip addresses
-
- @param userName name of the superuser
- @return configuration key for superuser ip-addresses]]>
- </doc>
- </method>
- <method name="getProxyGroups" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getProxyHosts" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- </class>
- <!-- end class org.apache.hadoop.security.authorize.DefaultImpersonationProvider -->
- <!-- start interface org.apache.hadoop.security.authorize.ImpersonationProvider -->
- <interface name="ImpersonationProvider" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="configurationPrefix" type="java.lang.String"/>
- <doc>
- <![CDATA[Specifies the configuration prefix for the proxy user properties and
- initializes the provider.
- @param configurationPrefix the configuration prefix for the proxy user
- properties]]>
- </doc>
- </method>
- <method name="authorize"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="org.apache.hadoop.security.UserGroupInformation"/>
- <param name="remoteAddress" type="java.lang.String"/>
- <exception name="AuthorizationException" type="org.apache.hadoop.security.authorize.AuthorizationException"/>
- <doc>
- <![CDATA[Authorize the superuser which is doing doAs
-
- @param user ugi of the effective or proxy user which contains a real user
- @param remoteAddress the ip address of client
- @throws AuthorizationException]]>
- </doc>
- </method>
- </interface>
- <!-- end interface org.apache.hadoop.security.authorize.ImpersonationProvider -->
- </package>
- <package name="org.apache.hadoop.security.http">
- <!-- start class org.apache.hadoop.security.http.RestCsrfPreventionFilter -->
- <class name="RestCsrfPreventionFilter" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="javax.servlet.Filter"/>
- <constructor name="RestCsrfPreventionFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filterConfig" type="javax.servlet.FilterConfig"/>
- <exception name="ServletException" type="javax.servlet.ServletException"/>
- </method>
- <method name="isBrowser" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="userAgent" type="java.lang.String"/>
- <doc>
- <![CDATA[This method interrogates the User-Agent String and returns whether it
- refers to a browser. If its not a browser, then the requirement for the
- CSRF header will not be enforced; if it is a browser, the requirement will
- be enforced.
- <p>
- A User-Agent String is considered to be a browser if it matches
- any of the regex patterns from browser-useragent-regex; the default
- behavior is to consider everything a browser that matches the following:
- "^Mozilla.*,^Opera.*". Subclasses can optionally override
- this method to use different behavior.
- @param userAgent The User-Agent String, or null if there isn't one
- @return true if the User-Agent String refers to a browser, false if not]]>
- </doc>
- </method>
- <method name="handleHttpInteraction"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="httpInteraction" type="org.apache.hadoop.security.http.RestCsrfPreventionFilter.HttpInteraction"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="ServletException" type="javax.servlet.ServletException"/>
- <doc>
- <![CDATA[Handles an {@link HttpInteraction} by applying the filtering logic.
- @param httpInteraction caller's HTTP interaction
- @throws IOException if there is an I/O error
- @throws ServletException if the implementation relies on the servlet API
- and a servlet API call has failed]]>
- </doc>
- </method>
- <method name="doFilter"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="request" type="javax.servlet.ServletRequest"/>
- <param name="response" type="javax.servlet.ServletResponse"/>
- <param name="chain" type="javax.servlet.FilterChain"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="ServletException" type="javax.servlet.ServletException"/>
- </method>
- <method name="destroy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getFilterParams" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="confPrefix" type="java.lang.String"/>
- <doc>
- <![CDATA[Constructs a mapping of configuration properties to be used for filter
- initialization. The mapping includes all properties that start with the
- specified configuration prefix. Property names in the mapping are trimmed
- to remove the configuration prefix.
- @param conf configuration to read
- @param confPrefix configuration prefix
- @return mapping of configuration properties to be used for filter
- initialization]]>
- </doc>
- </method>
- <field name="HEADER_USER_AGENT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="BROWSER_USER_AGENT_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="CUSTOM_HEADER_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="CUSTOM_METHODS_TO_IGNORE_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="HEADER_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[This filter provides protection against cross site request forgery (CSRF)
- attacks for REST APIs. Enabling this filter on an endpoint results in the
- requirement of all client to send a particular (configurable) HTTP header
- with every request. In the absense of this header the filter will reject the
- attempt as a bad request.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.http.RestCsrfPreventionFilter -->
- <!-- start class org.apache.hadoop.security.http.XFrameOptionsFilter -->
- <class name="XFrameOptionsFilter" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="javax.servlet.Filter"/>
- <constructor name="XFrameOptionsFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="destroy"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="doFilter"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="req" type="javax.servlet.ServletRequest"/>
- <param name="res" type="javax.servlet.ServletResponse"/>
- <param name="chain" type="javax.servlet.FilterChain"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="ServletException" type="javax.servlet.ServletException"/>
- </method>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="config" type="javax.servlet.FilterConfig"/>
- <exception name="ServletException" type="javax.servlet.ServletException"/>
- </method>
- <method name="getFilterParams" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="confPrefix" type="java.lang.String"/>
- <doc>
- <![CDATA[Constructs a mapping of configuration properties to be used for filter
- initialization. The mapping includes all properties that start with the
- specified configuration prefix. Property names in the mapping are trimmed
- to remove the configuration prefix.
- @param conf configuration to read
- @param confPrefix configuration prefix
- @return mapping of configuration properties to be used for filter
- initialization]]>
- </doc>
- </method>
- <field name="X_FRAME_OPTIONS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="CUSTOM_HEADER_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[This filter protects webapps from clickjacking attacks that
- are possible through use of Frames to embed the resources in another
- application and intercept clicks to accomplish nefarious things.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.http.XFrameOptionsFilter -->
- </package>
- <package name="org.apache.hadoop.security.protocolPB">
- </package>
- <package name="org.apache.hadoop.security.ssl">
- </package>
- <package name="org.apache.hadoop.security.token">
- <!-- start class org.apache.hadoop.security.token.SecretManager -->
- <class name="SecretManager" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="SecretManager"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="createPassword" return="byte[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="identifier" type="T"/>
- <doc>
- <![CDATA[Create the password for the given identifier.
- identifier may be modified inside this method.
- @param identifier the identifier to use
- @return the new password]]>
- </doc>
- </method>
- <method name="retrievePassword" return="byte[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="identifier" type="T"/>
- <exception name="SecretManager.InvalidToken" type="org.apache.hadoop.security.token.SecretManager.InvalidToken"/>
- <doc>
- <![CDATA[Retrieve the password for the given token identifier. Should check the date
- or registry to make sure the token hasn't expired or been revoked. Returns
- the relevant password.
- @param identifier the identifier to validate
- @return the password to use
- @throws InvalidToken the token was invalid]]>
- </doc>
- </method>
- <method name="retriableRetrievePassword" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="identifier" type="T"/>
- <exception name="SecretManager.InvalidToken" type="org.apache.hadoop.security.token.SecretManager.InvalidToken"/>
- <exception name="StandbyException" type="org.apache.hadoop.ipc.StandbyException"/>
- <exception name="RetriableException" type="org.apache.hadoop.ipc.RetriableException"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[The same functionality with {@link #retrievePassword}, except that this
- method can throw a {@link RetriableException} or a {@link StandbyException}
- to indicate that client can retry/failover the same operation because of
- temporary issue on the server side.
-
- @param identifier the identifier to validate
- @return the password to use
- @throws InvalidToken the token was invalid
- @throws StandbyException the server is in standby state, the client can
- try other servers
- @throws RetriableException the token was invalid, and the server thinks
- this may be a temporary issue and suggests the client to retry
- @throws IOException to allow future exceptions to be added without breaking
- compatibility]]>
- </doc>
- </method>
- <method name="createIdentifier" return="T"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an empty token identifier.
- @return the newly created empty token identifier]]>
- </doc>
- </method>
- <method name="checkAvailableForRead"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="StandbyException" type="org.apache.hadoop.ipc.StandbyException"/>
- <doc>
- <![CDATA[No-op if the secret manager is available for reading tokens, throw a
- StandbyException otherwise.
-
- @throws StandbyException if the secret manager is not available to read
- tokens]]>
- </doc>
- </method>
- <method name="generateSecret" return="javax.crypto.SecretKey"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Generate a new random secret key.
- @return the new key]]>
- </doc>
- </method>
- <method name="createPassword" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="identifier" type="byte[]"/>
- <param name="key" type="javax.crypto.SecretKey"/>
- <doc>
- <![CDATA[Compute HMAC of the identifier using the secret key and return the
- output as password
- @param identifier the bytes of the identifier
- @param key the secret key
- @return the bytes of the generated password]]>
- </doc>
- </method>
- <method name="createSecretKey" return="javax.crypto.SecretKey"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="key" type="byte[]"/>
- <doc>
- <![CDATA[Convert the byte[] to a secret key
- @param key the byte[] to create a secret key from
- @return the secret key]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The server-side secret manager for each token type.
- @param <T> The type of the token identifier]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.SecretManager -->
- <!-- start class org.apache.hadoop.security.token.Token -->
- <class name="Token" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="Token" type="T, org.apache.hadoop.security.token.SecretManager"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a token given a token identifier and a secret manager for the
- type of the token identifier.
- @param id the token identifier
- @param mgr the secret manager]]>
- </doc>
- </constructor>
- <constructor name="Token" type="byte[], byte[], org.apache.hadoop.io.Text, org.apache.hadoop.io.Text"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct a token from the components.
- @param identifier the token identifier
- @param password the token's password
- @param kind the kind of token
- @param service the service for this token]]>
- </doc>
- </constructor>
- <constructor name="Token"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default constructor]]>
- </doc>
- </constructor>
- <constructor name="Token" type="org.apache.hadoop.security.token.Token"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Clone a token.
- @param other the token to clone]]>
- </doc>
- </constructor>
- <method name="getIdentifier" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the token identifier's byte representation
- @return the token identifier's byte representation]]>
- </doc>
- </method>
- <method name="decodeIdentifier" return="T"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the token identifier object, or null if it could not be constructed
- (because the class could not be loaded, for example).
- @return the token identifier, or null
- @throws IOException]]>
- </doc>
- </method>
- <method name="getPassword" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the token password/secret
- @return the token password/secret]]>
- </doc>
- </method>
- <method name="getKind" return="org.apache.hadoop.io.Text"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the token kind
- @return the kind of the token]]>
- </doc>
- </method>
- <method name="getService" return="org.apache.hadoop.io.Text"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the service on which the token is supposed to be used
- @return the service name]]>
- </doc>
- </method>
- <method name="setService"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newService" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[Set the service on which the token is supposed to be used
- @param newService the service name]]>
- </doc>
- </method>
- <method name="setID"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="bytes" type="byte[]"/>
- </method>
- <method name="setPassword"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newPassword" type="byte[]"/>
- </method>
- <method name="isPrivate" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Whether this is a private token.
- @return false always for non-private tokens]]>
- </doc>
- </method>
- <method name="isPrivateCloneOf" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="thePublicService" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[Whether this is a private clone of a public token.
- @param thePublicService the public service name
- @return false always for non-private tokens]]>
- </doc>
- </method>
- <method name="privateClone" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newService" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[Create a private clone of a public token.
- @param newService the new service name
- @return a private token]]>
- </doc>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="encodeToUrlString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Encode this token as a url safe string
- @return the encoded string
- @throws IOException]]>
- </doc>
- </method>
- <method name="decodeFromUrlString"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="newValue" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Decode the given url safe string into this token.
- @param newValue the encoded string
- @throws IOException]]>
- </doc>
- </method>
- <method name="equals" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="right" type="java.lang.Object"/>
- </method>
- <method name="hashCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="buildCacheKey" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isManaged" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Is this token managed so that it can be renewed or cancelled?
- @return true, if it can be renewed and cancelled.]]>
- </doc>
- </method>
- <method name="renew" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Renew this delegation token
- @return the new expiration time
- @throws IOException
- @throws InterruptedException]]>
- </doc>
- </method>
- <method name="cancel"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Cancel this delegation token
- @throws IOException
- @throws InterruptedException]]>
- </doc>
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[The client-side form of the token.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.Token -->
- <!-- start class org.apache.hadoop.security.token.Token.TrivialRenewer -->
- <class name="Token.TrivialRenewer" extends="org.apache.hadoop.security.token.TokenRenewer"
- abstract="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="Token.TrivialRenewer"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getKind" return="org.apache.hadoop.io.Text"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="handleKind" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="kind" type="org.apache.hadoop.io.Text"/>
- </method>
- <method name="isManaged" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- </method>
- <method name="renew" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- </method>
- <method name="cancel"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- </method>
- <doc>
- <![CDATA[A trivial renewer for token kinds that aren't managed. Sub-classes need
- to implement getKind for their token kind.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.Token.TrivialRenewer -->
- <!-- start class org.apache.hadoop.security.token.TokenIdentifier -->
- <class name="TokenIdentifier" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.io.Writable"/>
- <constructor name="TokenIdentifier"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getKind" return="org.apache.hadoop.io.Text"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the token kind
- @return the kind of the token]]>
- </doc>
- </method>
- <method name="getUser" return="org.apache.hadoop.security.UserGroupInformation"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the Ugi with the username encoded in the token identifier
-
- @return the username. null is returned if username in the identifier is
- empty or null.]]>
- </doc>
- </method>
- <method name="getBytes" return="byte[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the bytes for the token identifier
- @return the bytes of the identifier]]>
- </doc>
- </method>
- <method name="getTrackingId" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns a tracking identifier that can be used to associate usages of a
- token across multiple client sessions.
- Currently, this function just returns an MD5 of {{@link #getBytes()}.
- @return tracking identifier]]>
- </doc>
- </method>
- <doc>
- <![CDATA[An identifier that identifies a token, may contain public information
- about a token, including its kind (or type).]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.TokenIdentifier -->
- <!-- start class org.apache.hadoop.security.token.TokenInfo -->
- <class name="TokenInfo" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.lang.annotation.Annotation"/>
- <doc>
- <![CDATA[Indicates Token related information to be used]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.TokenInfo -->
- <!-- start class org.apache.hadoop.security.token.TokenRenewer -->
- <class name="TokenRenewer" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="TokenRenewer"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="handleKind" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="kind" type="org.apache.hadoop.io.Text"/>
- <doc>
- <![CDATA[Does this renewer handle this kind of token?
- @param kind the kind of the token
- @return true if this renewer can renew it]]>
- </doc>
- </method>
- <method name="isManaged" return="boolean"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Is the given token managed? Only managed tokens may be renewed or
- cancelled.
- @param token the token being checked
- @return true if the token may be renewed or cancelled
- @throws IOException]]>
- </doc>
- </method>
- <method name="renew" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Renew the given token.
- @return the new expiration time
- @throws IOException
- @throws InterruptedException]]>
- </doc>
- </method>
- <method name="cancel"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="token" type="org.apache.hadoop.security.token.Token"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="InterruptedException" type="java.lang.InterruptedException"/>
- <doc>
- <![CDATA[Cancel the given token
- @throws IOException
- @throws InterruptedException]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This is the interface for plugins that handle tokens.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.TokenRenewer -->
- <!-- start interface org.apache.hadoop.security.token.TokenSelector -->
- <interface name="TokenSelector" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="selectToken" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="service" type="org.apache.hadoop.io.Text"/>
- <param name="tokens" type="java.util.Collection"/>
- </method>
- <doc>
- <![CDATA[Select token of type T from tokens for use with named service
-
- @param <T>
- T extends TokenIdentifier]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.security.token.TokenSelector -->
- </package>
- <package name="org.apache.hadoop.security.token.delegation.web">
- <!-- start class org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL -->
- <class name="DelegationTokenAuthenticatedURL" extends="org.apache.hadoop.security.authentication.client.AuthenticatedURL"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="DelegationTokenAuthenticatedURL"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates an <code>DelegationTokenAuthenticatedURL</code>.
- <p/>
- An instance of the default {@link DelegationTokenAuthenticator} will be
- used.]]>
- </doc>
- </constructor>
- <constructor name="DelegationTokenAuthenticatedURL" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates an <code>DelegationTokenAuthenticatedURL</code>.
- @param authenticator the {@link DelegationTokenAuthenticator} instance to
- use, if <code>null</code> the default one will be used.]]>
- </doc>
- </constructor>
- <constructor name="DelegationTokenAuthenticatedURL" type="org.apache.hadoop.security.authentication.client.ConnectionConfigurator"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates an <code>DelegationTokenAuthenticatedURL</code> using the default
- {@link DelegationTokenAuthenticator} class.
- @param connConfigurator a connection configurator.]]>
- </doc>
- </constructor>
- <constructor name="DelegationTokenAuthenticatedURL" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator, org.apache.hadoop.security.authentication.client.ConnectionConfigurator"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Creates an <code>DelegationTokenAuthenticatedURL</code>.
- @param authenticator the {@link DelegationTokenAuthenticator} instance to
- use, if <code>null</code> the default one will be used.
- @param connConfigurator a connection configurator.]]>
- </doc>
- </constructor>
- <method name="setDefaultDelegationTokenAuthenticator"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="authenticator" type="java.lang.Class"/>
- <doc>
- <![CDATA[Sets the default {@link DelegationTokenAuthenticator} class to use when an
- {@link DelegationTokenAuthenticatedURL} instance is created without
- specifying one.
- The default class is {@link KerberosDelegationTokenAuthenticator}
- @param authenticator the authenticator class to use as default.]]>
- </doc>
- </method>
- <method name="getDefaultDelegationTokenAuthenticator" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the default {@link DelegationTokenAuthenticator} class to use when
- an {@link DelegationTokenAuthenticatedURL} instance is created without
- specifying one.
- <p/>
- The default class is {@link KerberosDelegationTokenAuthenticator}
- @return the delegation token authenticator class to use as default.]]>
- </doc>
- </method>
- <method name="setUseQueryStringForDelegationToken"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="useQueryString" type="boolean"/>
- <doc>
- <![CDATA[Sets if delegation token should be transmitted in the URL query string.
- By default it is transmitted using the
- {@link DelegationTokenAuthenticator#DELEGATION_TOKEN_HEADER} HTTP header.
- <p/>
- This method is provided to enable WebHDFS backwards compatibility.
- @param useQueryString <code>TRUE</code> if the token is transmitted in the
- URL query string, <code>FALSE</code> if the delegation token is transmitted
- using the {@link DelegationTokenAuthenticator#DELEGATION_TOKEN_HEADER} HTTP
- header.]]>
- </doc>
- </method>
- <method name="useQueryStringForDelegationToken" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns if delegation token is transmitted as a HTTP header.
- @return <code>TRUE</code> if the token is transmitted in the URL query
- string, <code>FALSE</code> if the delegation token is transmitted using the
- {@link DelegationTokenAuthenticator#DELEGATION_TOKEN_HEADER} HTTP header.]]>
- </doc>
- </method>
- <method name="openConnection" return="java.net.HttpURLConnection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Returns an authenticated {@link HttpURLConnection}, it uses a Delegation
- Token only if the given auth token is an instance of {@link Token} and
- it contains a Delegation Token, otherwise use the configured
- {@link DelegationTokenAuthenticator} to authenticate the connection.
- @param url the URL to connect to. Only HTTP/S URLs are supported.
- @param token the authentication token being used for the user.
- @return an authenticated {@link HttpURLConnection}.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="openConnection" return="java.net.HttpURLConnection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Returns an authenticated {@link HttpURLConnection}. If the Delegation
- Token is present, it will be used taking precedence over the configured
- <code>Authenticator</code>.
- @param url the URL to connect to. Only HTTP/S URLs are supported.
- @param token the authentication token being used for the user.
- @return an authenticated {@link HttpURLConnection}.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="openConnection" return="java.net.HttpURLConnection"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <param name="doAs" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Returns an authenticated {@link HttpURLConnection}. If the Delegation
- Token is present, it will be used taking precedence over the configured
- <code>Authenticator</code>. If the <code>doAs</code> parameter is not NULL,
- the request will be done on behalf of the specified <code>doAs</code> user.
- @param url the URL to connect to. Only HTTP/S URLs are supported.
- @param token the authentication token being used for the user.
- @param doAs user to do the the request on behalf of, if NULL the request is
- as self.
- @return an authenticated {@link HttpURLConnection}.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="getDelegationToken" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <param name="renewer" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Requests a delegation token using the configured <code>Authenticator</code>
- for authentication.
- @param url the URL to get the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token being used for the user where the
- Delegation token will be stored.
- @param renewer the renewer user.
- @return a delegation token.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="getDelegationToken" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <param name="renewer" type="java.lang.String"/>
- <param name="doAsUser" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Requests a delegation token using the configured <code>Authenticator</code>
- for authentication.
- @param url the URL to get the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token being used for the user where the
- Delegation token will be stored.
- @param renewer the renewer user.
- @param doAsUser the user to do as, which will be the token owner.
- @return a delegation token.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="renewDelegationToken" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Renews a delegation token from the server end-point using the
- configured <code>Authenticator</code> for authentication.
- @param url the URL to renew the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token with the Delegation Token to renew.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="renewDelegationToken" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <param name="doAsUser" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Renews a delegation token from the server end-point using the
- configured <code>Authenticator</code> for authentication.
- @param url the URL to renew the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token with the Delegation Token to renew.
- @param doAsUser the user to do as, which will be the token owner.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="cancelDelegationToken"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Cancels a delegation token from the server end-point. It does not require
- being authenticated by the configured <code>Authenticator</code>.
- @param url the URL to cancel the delegation token from. Only HTTP/S URLs
- are supported.
- @param token the authentication token with the Delegation Token to cancel.
- @throws IOException if an IO error occurred.]]>
- </doc>
- </method>
- <method name="cancelDelegationToken"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token"/>
- <param name="doAsUser" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Cancels a delegation token from the server end-point. It does not require
- being authenticated by the configured <code>Authenticator</code>.
- @param url the URL to cancel the delegation token from. Only HTTP/S URLs
- are supported.
- @param token the authentication token with the Delegation Token to cancel.
- @param doAsUser the user to do as, which will be the token owner.
- @throws IOException if an IO error occurred.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[The <code>DelegationTokenAuthenticatedURL</code> is a
- {@link AuthenticatedURL} sub-class with built-in Hadoop Delegation Token
- functionality.
- <p/>
- The authentication mechanisms supported by default are Hadoop Simple
- authentication (also known as pseudo authentication) and Kerberos SPNEGO
- authentication.
- <p/>
- Additional authentication mechanisms can be supported via {@link
- DelegationTokenAuthenticator} implementations.
- <p/>
- The default {@link DelegationTokenAuthenticator} is the {@link
- KerberosDelegationTokenAuthenticator} class which supports
- automatic fallback from Kerberos SPNEGO to Hadoop Simple authentication via
- the {@link PseudoDelegationTokenAuthenticator} class.
- <p/>
- <code>AuthenticatedURL</code> instances are not thread-safe.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL -->
- <!-- start class org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token -->
- <class name="DelegationTokenAuthenticatedURL.Token" extends="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"
- abstract="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="DelegationTokenAuthenticatedURL.Token"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getDelegationToken" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setDelegationToken"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="delegationToken" type="org.apache.hadoop.security.token.Token"/>
- </method>
- <doc>
- <![CDATA[Client side authentication token that handles Delegation Tokens.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.Token -->
- <!-- start class org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator -->
- <class name="DelegationTokenAuthenticator" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.security.authentication.client.Authenticator"/>
- <constructor name="DelegationTokenAuthenticator" type="org.apache.hadoop.security.authentication.client.Authenticator"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="setConnectionConfigurator"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="configurator" type="org.apache.hadoop.security.authentication.client.ConnectionConfigurator"/>
- </method>
- <method name="authenticate"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- </method>
- <method name="getDelegationToken" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <param name="renewer" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Requests a delegation token using the configured <code>Authenticator</code>
- for authentication.
- @param url the URL to get the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token being used for the user where the
- Delegation token will be stored.
- @param renewer the renewer user.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="getDelegationToken" return="org.apache.hadoop.security.token.Token"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <param name="renewer" type="java.lang.String"/>
- <param name="doAsUser" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Requests a delegation token using the configured <code>Authenticator</code>
- for authentication.
- @param url the URL to get the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token being used for the user where the
- Delegation token will be stored.
- @param renewer the renewer user.
- @param doAsUser the user to do as, which will be the token owner.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="renewDelegationToken" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <param name="dToken" type="org.apache.hadoop.security.token.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Renews a delegation token from the server end-point using the
- configured <code>Authenticator</code> for authentication.
- @param url the URL to renew the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token with the Delegation Token to renew.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="renewDelegationToken" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <param name="dToken" type="org.apache.hadoop.security.token.Token"/>
- <param name="doAsUser" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <exception name="AuthenticationException" type="org.apache.hadoop.security.authentication.client.AuthenticationException"/>
- <doc>
- <![CDATA[Renews a delegation token from the server end-point using the
- configured <code>Authenticator</code> for authentication.
- @param url the URL to renew the delegation token from. Only HTTP/S URLs are
- supported.
- @param token the authentication token with the Delegation Token to renew.
- @param doAsUser the user to do as, which will be the token owner.
- @throws IOException if an IO error occurred.
- @throws AuthenticationException if an authentication exception occurred.]]>
- </doc>
- </method>
- <method name="cancelDelegationToken"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <param name="dToken" type="org.apache.hadoop.security.token.Token"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Cancels a delegation token from the server end-point. It does not require
- being authenticated by the configured <code>Authenticator</code>.
- @param url the URL to cancel the delegation token from. Only HTTP/S URLs
- are supported.
- @param token the authentication token with the Delegation Token to cancel.
- @throws IOException if an IO error occurred.]]>
- </doc>
- </method>
- <method name="cancelDelegationToken"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="url" type="java.net.URL"/>
- <param name="token" type="org.apache.hadoop.security.authentication.client.AuthenticatedURL.Token"/>
- <param name="dToken" type="org.apache.hadoop.security.token.Token"/>
- <param name="doAsUser" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Cancels a delegation token from the server end-point. It does not require
- being authenticated by the configured <code>Authenticator</code>.
- @param url the URL to cancel the delegation token from. Only HTTP/S URLs
- are supported.
- @param token the authentication token with the Delegation Token to cancel.
- @param doAsUser the user to do as, which will be the token owner.
- @throws IOException if an IO error occurred.]]>
- </doc>
- </method>
- <field name="OP_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DELEGATION_TOKEN_HEADER" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DELEGATION_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="TOKEN_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RENEWER_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="SERVICE_PARAM" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DELEGATION_TOKEN_JSON" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="DELEGATION_TOKEN_URL_STRING_JSON" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="RENEW_DELEGATION_TOKEN_JSON" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[{@link Authenticator} wrapper that enhances an {@link Authenticator} with
- Delegation Token support.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator -->
- <!-- start class org.apache.hadoop.security.token.delegation.web.KerberosDelegationTokenAuthenticator -->
- <class name="KerberosDelegationTokenAuthenticator" extends="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="KerberosDelegationTokenAuthenticator"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[The <code>KerberosDelegationTokenAuthenticator</code> provides support for
- Kerberos SPNEGO authentication mechanism and support for Hadoop Delegation
- Token operations.
- <p/>
- It falls back to the {@link PseudoDelegationTokenAuthenticator} if the HTTP
- endpoint does not trigger a SPNEGO authentication]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.delegation.web.KerberosDelegationTokenAuthenticator -->
- <!-- start class org.apache.hadoop.security.token.delegation.web.PseudoDelegationTokenAuthenticator -->
- <class name="PseudoDelegationTokenAuthenticator" extends="org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="PseudoDelegationTokenAuthenticator"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <doc>
- <![CDATA[The <code>PseudoDelegationTokenAuthenticator</code> provides support for
- Hadoop's pseudo authentication mechanism that accepts
- the user name specified as a query string parameter and support for Hadoop
- Delegation Token operations.
- <p/>
- This mimics the model of Hadoop Simple authentication trusting the
- {@link UserGroupInformation#getCurrentUser()} value.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.security.token.delegation.web.PseudoDelegationTokenAuthenticator -->
- </package>
- <package name="org.apache.hadoop.service">
- <!-- start class org.apache.hadoop.service.AbstractService -->
- <class name="AbstractService" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.service.Service"/>
- <constructor name="AbstractService" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct the service.
- @param name service name]]>
- </doc>
- </constructor>
- <method name="getServiceState" return="org.apache.hadoop.service.Service.STATE"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getFailureCause" return="java.lang.Throwable"
- abstract="false" native="false" synchronized="true"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getFailureState" return="org.apache.hadoop.service.Service.STATE"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="setConfig"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Set the configuration for this service.
- This method is called during {@link #init(Configuration)}
- and should only be needed if for some reason a service implementation
- needs to override that initial setting -for example replacing
- it with a new subclass of {@link Configuration}
- @param conf new configuration.]]>
- </doc>
- </method>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[{@inheritDoc}
- This invokes {@link #serviceInit}
- @param conf the configuration of the service. This must not be null
- @throws ServiceStateException if the configuration was null,
- the state change not permitted, or something else went wrong]]>
- </doc>
- </method>
- <method name="start"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[{@inheritDoc}
- @throws ServiceStateException if the current service state does not permit
- this action]]>
- </doc>
- </method>
- <method name="stop"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[{@inheritDoc}]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Relay to {@link #stop()}
- @throws IOException]]>
- </doc>
- </method>
- <method name="noteFailure"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="protected"
- deprecated="not deprecated">
- <param name="exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Failure handling: record the exception
- that triggered it -if there was not one already.
- Services are free to call this themselves.
- @param exception the exception]]>
- </doc>
- </method>
- <method name="waitForServiceToStop" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="timeout" type="long"/>
- </method>
- <method name="serviceInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[All initialization code needed by a service.
- This method will only ever be called once during the lifecycle of
- a specific service instance.
- Implementations do not need to be synchronized as the logic
- in {@link #init(Configuration)} prevents re-entrancy.
- The base implementation checks to see if the subclass has created
- a new configuration instance, and if so, updates the base class value
- @param conf configuration
- @throws Exception on a failure -these will be caught,
- possibly wrapped, and wil; trigger a service stop]]>
- </doc>
- </method>
- <method name="serviceStart"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Actions called during the INITED to STARTED transition.
- This method will only ever be called once during the lifecycle of
- a specific service instance.
- Implementations do not need to be synchronized as the logic
- in {@link #start()} prevents re-entrancy.
- @throws Exception if needed -these will be caught,
- wrapped, and trigger a service stop]]>
- </doc>
- </method>
- <method name="serviceStop"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Actions called during the transition to the STOPPED state.
- This method will only ever be called once during the lifecycle of
- a specific service instance.
- Implementations do not need to be synchronized as the logic
- in {@link #stop()} prevents re-entrancy.
- Implementations MUST write this to be robust against failures, including
- checks for null references -and for the first failure to not stop other
- attempts to shut down parts of the service.
- @throws Exception if needed -these will be caught and logged.]]>
- </doc>
- </method>
- <method name="registerServiceListener"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="org.apache.hadoop.service.ServiceStateChangeListener"/>
- </method>
- <method name="unregisterServiceListener"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="org.apache.hadoop.service.ServiceStateChangeListener"/>
- </method>
- <method name="registerGlobalListener"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="org.apache.hadoop.service.ServiceStateChangeListener"/>
- <doc>
- <![CDATA[Register a global listener, which receives notifications
- from the state change events of all services in the JVM
- @param l listener]]>
- </doc>
- </method>
- <method name="unregisterGlobalListener" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="l" type="org.apache.hadoop.service.ServiceStateChangeListener"/>
- <doc>
- <![CDATA[unregister a global listener.
- @param l listener to unregister
- @return true if the listener was found (and then deleted)]]>
- </doc>
- </method>
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getConfig" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getStartTime" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getLifecycleHistory" return="java.util.List"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="isInState" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="expected" type="org.apache.hadoop.service.Service.STATE"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="putBlocker"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="details" type="java.lang.String"/>
- <doc>
- <![CDATA[Put a blocker to the blocker map -replacing any
- with the same name.
- @param name blocker name
- @param details any specifics on the block. This must be non-null.]]>
- </doc>
- </method>
- <method name="removeBlocker"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <doc>
- <![CDATA[Remove a blocker from the blocker map -
- this is a no-op if the blocker is not present
- @param name the name of the blocker]]>
- </doc>
- </method>
- <method name="getBlockers" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <doc>
- <![CDATA[This is the base implementation class for services.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.AbstractService -->
- <!-- start class org.apache.hadoop.service.CompositeService -->
- <class name="CompositeService" extends="org.apache.hadoop.service.AbstractService"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="CompositeService" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getServices" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get a cloned list of services
- @return a list of child services at the time of invocation -
- added services will not be picked up.]]>
- </doc>
- </method>
- <method name="addService"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="service" type="org.apache.hadoop.service.Service"/>
- <doc>
- <![CDATA[Add the passed {@link Service} to the list of services managed by this
- {@link CompositeService}
- @param service the {@link Service} to be added]]>
- </doc>
- </method>
- <method name="addIfService" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="object" type="java.lang.Object"/>
- <doc>
- <![CDATA[If the passed object is an instance of {@link Service},
- add it to the list of services managed by this {@link CompositeService}
- @param object
- @return true if a service is added, false otherwise.]]>
- </doc>
- </method>
- <method name="removeService" return="boolean"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="service" type="org.apache.hadoop.service.Service"/>
- </method>
- <method name="serviceInit"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <exception name="Exception" type="java.lang.Exception"/>
- </method>
- <method name="serviceStart"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="Exception" type="java.lang.Exception"/>
- </method>
- <method name="serviceStop"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="Exception" type="java.lang.Exception"/>
- </method>
- <field name="STOP_ONLY_STARTED_SERVICES" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Policy on shutdown: attempt to close everything (purest) or
- only try to close started services (which assumes
- that the service implementations may not handle the stop() operation
- except when started.
- Irrespective of this policy, if a child service fails during
- its init() or start() operations, it will have stop() called on it.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Composition of services.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.CompositeService -->
- <!-- start class org.apache.hadoop.service.LifecycleEvent -->
- <class name="LifecycleEvent" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.io.Serializable"/>
- <constructor name="LifecycleEvent"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <field name="time" type="long"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Local time in milliseconds when the event occurred]]>
- </doc>
- </field>
- <field name="state" type="org.apache.hadoop.service.Service.STATE"
- transient="false" volatile="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[new state]]>
- </doc>
- </field>
- <doc>
- <![CDATA[A serializable lifecycle event: the time a state
- transition occurred, and what state was entered.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.LifecycleEvent -->
- <!-- start class org.apache.hadoop.service.LoggingStateChangeListener -->
- <class name="LoggingStateChangeListener" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.service.ServiceStateChangeListener"/>
- <constructor name="LoggingStateChangeListener" type="org.slf4j.Logger"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Log events to the given log
- @param log destination for events]]>
- </doc>
- </constructor>
- <constructor name="LoggingStateChangeListener"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Log events to the static log for this class]]>
- </doc>
- </constructor>
- <method name="stateChanged"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="service" type="org.apache.hadoop.service.Service"/>
- <doc>
- <![CDATA[Callback for a state change event: log it
- @param service the service that has changed.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This is a state change listener that logs events at INFO level]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.LoggingStateChangeListener -->
- <!-- start interface org.apache.hadoop.service.Service -->
- <interface name="Service" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.io.Closeable"/>
- <method name="init"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="config" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Initialize the service.
- The transition MUST be from {@link STATE#NOTINITED} to {@link STATE#INITED}
- unless the operation failed and an exception was raised, in which case
- {@link #stop()} MUST be invoked and the service enter the state
- {@link STATE#STOPPED}.
- @param config the configuration of the service
- @throws RuntimeException on any failure during the operation]]>
- </doc>
- </method>
- <method name="start"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Start the service.
- The transition MUST be from {@link STATE#INITED} to {@link STATE#STARTED}
- unless the operation failed and an exception was raised, in which case
- {@link #stop()} MUST be invoked and the service enter the state
- {@link STATE#STOPPED}.
- @throws RuntimeException on any failure during the operation]]>
- </doc>
- </method>
- <method name="stop"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Stop the service. This MUST be a no-op if the service is already
- in the {@link STATE#STOPPED} state. It SHOULD be a best-effort attempt
- to stop all parts of the service.
- The implementation must be designed to complete regardless of the service
- state, including the initialized/uninitialized state of all its internal
- fields.
- @throws RuntimeException on any failure during the stop operation]]>
- </doc>
- </method>
- <method name="close"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[A version of stop() that is designed to be usable in Java7 closure
- clauses.
- Implementation classes MUST relay this directly to {@link #stop()}
- @throws IOException never
- @throws RuntimeException on any failure during the stop operation]]>
- </doc>
- </method>
- <method name="registerServiceListener"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="listener" type="org.apache.hadoop.service.ServiceStateChangeListener"/>
- <doc>
- <![CDATA[Register a listener to the service state change events.
- If the supplied listener is already listening to this service,
- this method is a no-op.
- @param listener a new listener]]>
- </doc>
- </method>
- <method name="unregisterServiceListener"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="listener" type="org.apache.hadoop.service.ServiceStateChangeListener"/>
- <doc>
- <![CDATA[Unregister a previously registered listener of the service state
- change events. No-op if the listener is already unregistered.
- @param listener the listener to unregister.]]>
- </doc>
- </method>
- <method name="getName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the name of this service.
- @return the service name]]>
- </doc>
- </method>
- <method name="getConfig" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the configuration of this service.
- This is normally not a clone and may be manipulated, though there are no
- guarantees as to what the consequences of such actions may be
- @return the current configuration, unless a specific implentation chooses
- otherwise.]]>
- </doc>
- </method>
- <method name="getServiceState" return="org.apache.hadoop.service.Service.STATE"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the current service state
- @return the state of the service]]>
- </doc>
- </method>
- <method name="getStartTime" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the service start time
- @return the start time of the service. This will be zero if the service
- has not yet been started.]]>
- </doc>
- </method>
- <method name="isInState" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="state" type="org.apache.hadoop.service.Service.STATE"/>
- <doc>
- <![CDATA[Query to see if the service is in a specific state.
- In a multi-threaded system, the state may not hold for very long.
- @param state the expected state
- @return true if, at the time of invocation, the service was in that state.]]>
- </doc>
- </method>
- <method name="getFailureCause" return="java.lang.Throwable"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the first exception raised during the service failure. If null,
- no exception was logged
- @return the failure logged during a transition to the stopped state]]>
- </doc>
- </method>
- <method name="getFailureState" return="org.apache.hadoop.service.Service.STATE"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the state in which the failure in {@link #getFailureCause()} occurred.
- @return the state or null if there was no failure]]>
- </doc>
- </method>
- <method name="waitForServiceToStop" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="timeout" type="long"/>
- <doc>
- <![CDATA[Block waiting for the service to stop; uses the termination notification
- object to do so.
- This method will only return after all the service stop actions
- have been executed (to success or failure), or the timeout elapsed
- This method can be called before the service is inited or started; this is
- to eliminate any race condition with the service stopping before
- this event occurs.
- @param timeout timeout in milliseconds. A value of zero means "forever"
- @return true iff the service stopped in the time period]]>
- </doc>
- </method>
- <method name="getLifecycleHistory" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get a snapshot of the lifecycle history; it is a static list
- @return a possibly empty but never null list of lifecycle events.]]>
- </doc>
- </method>
- <method name="getBlockers" return="java.util.Map"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the blockers on a service -remote dependencies
- that are stopping the service from being <i>live</i>.
- @return a (snapshotted) map of blocker name->description values]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Service LifeCycle.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.service.Service -->
- <!-- start class org.apache.hadoop.service.ServiceOperations -->
- <class name="ServiceOperations" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="stop"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="service" type="org.apache.hadoop.service.Service"/>
- <doc>
- <![CDATA[Stop a service.
- <p/>Do nothing if the service is null or not
- in a state in which it can be/needs to be stopped.
- <p/>
- The service state is checked <i>before</i> the operation begins.
- This process is <i>not</i> thread safe.
- @param service a service or null]]>
- </doc>
- </method>
- <method name="stopQuietly" return="java.lang.Exception"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="service" type="org.apache.hadoop.service.Service"/>
- <doc>
- <![CDATA[Stop a service; if it is null do nothing. Exceptions are caught and
- logged at warn level. (but not Throwables). This operation is intended to
- be used in cleanup operations
- @param service a service; may be null
- @return any exception that was caught; null if none was.]]>
- </doc>
- </method>
- <method name="stopQuietly" return="java.lang.Exception"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="log" type="org.apache.commons.logging.Log"/>
- <param name="service" type="org.apache.hadoop.service.Service"/>
- <doc>
- <![CDATA[Stop a service; if it is null do nothing. Exceptions are caught and
- logged at warn level. (but not Throwables). This operation is intended to
- be used in cleanup operations
- @param log the log to warn at
- @param service a service; may be null
- @return any exception that was caught; null if none was.
- @see ServiceOperations#stopQuietly(Service)]]>
- </doc>
- </method>
- <method name="stopQuietly" return="java.lang.Exception"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="log" type="org.slf4j.Logger"/>
- <param name="service" type="org.apache.hadoop.service.Service"/>
- <doc>
- <![CDATA[Stop a service; if it is null do nothing. Exceptions are caught and
- logged at warn level. (but not Throwables). This operation is intended to
- be used in cleanup operations
- @param log the log to warn at
- @param service a service; may be null
- @return any exception that was caught; null if none was.
- @see ServiceOperations#stopQuietly(Service)]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This class contains a set of methods to work with services, especially
- to walk them through their lifecycle.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.ServiceOperations -->
- <!-- start interface org.apache.hadoop.service.ServiceStateChangeListener -->
- <interface name="ServiceStateChangeListener" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="stateChanged"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="service" type="org.apache.hadoop.service.Service"/>
- <doc>
- <![CDATA[Callback to notify of a state change. The service will already
- have changed state before this callback is invoked.
- This operation is invoked on the thread that initiated the state change,
- while the service itself in in a sychronized section.
- <ol>
- <li>Any long-lived operation here will prevent the service state
- change from completing in a timely manner.</li>
- <li>If another thread is somehow invoked from the listener, and
- that thread invokes the methods of the service (including
- subclass-specific methods), there is a risk of a deadlock.</li>
- </ol>
- @param service the service that has changed.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Interface to notify state changes of a service.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.service.ServiceStateChangeListener -->
- <!-- start class org.apache.hadoop.service.ServiceStateException -->
- <class name="ServiceStateException" extends="java.lang.RuntimeException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.util.ExitCodeProvider"/>
- <constructor name="ServiceStateException" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Instantiate
- @param message error message]]>
- </doc>
- </constructor>
- <constructor name="ServiceStateException" type="java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Instantiate with a message and cause; if the cause has an exit code
- then it is used, otherwise the generic
- {@link LauncherExitCodes#EXIT_SERVICE_LIFECYCLE_EXCEPTION} exit code
- is used.
- @param message exception message
- @param cause optional inner cause]]>
- </doc>
- </constructor>
- <constructor name="ServiceStateException" type="int, java.lang.String, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Instantiate, using the specified exit code as the exit code
- of the exception, irrespetive of any exit code supplied by any inner
- cause.
- @param exitCode exit code to declare
- @param message exception message
- @param cause inner cause]]>
- </doc>
- </constructor>
- <constructor name="ServiceStateException" type="java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="getExitCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="convert" return="java.lang.RuntimeException"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="fault" type="java.lang.Throwable"/>
- <doc>
- <![CDATA[Convert any exception into a {@link RuntimeException}.
- All other exception types are wrapped in a new instance of
- {@code ServiceStateException}.
- @param fault exception or throwable
- @return a {@link RuntimeException} to rethrow]]>
- </doc>
- </method>
- <method name="convert" return="java.lang.RuntimeException"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="text" type="java.lang.String"/>
- <param name="fault" type="java.lang.Throwable"/>
- <doc>
- <![CDATA[Convert any exception into a {@link RuntimeException}.
- If the caught exception is already of that type, it is typecast to a
- {@link RuntimeException} and returned.
- All other exception types are wrapped in a new instance of
- {@code ServiceStateException}.
- @param text text to use if a new exception is created
- @param fault exception or throwable
- @return a {@link RuntimeException} to rethrow]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Exception that can be raised on state change operations, whose
- exit code can be explicitly set, determined from that of any nested
- cause, or a default value of
- {@link LauncherExitCodes#EXIT_SERVICE_LIFECYCLE_EXCEPTION}.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.ServiceStateException -->
- <!-- start class org.apache.hadoop.service.ServiceStateModel -->
- <class name="ServiceStateModel" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ServiceStateModel" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create the service state model in the {@link Service.STATE#NOTINITED}
- state.]]>
- </doc>
- </constructor>
- <constructor name="ServiceStateModel" type="java.lang.String, org.apache.hadoop.service.Service.STATE"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a service state model instance in the chosen state
- @param state the starting state]]>
- </doc>
- </constructor>
- <method name="getState" return="org.apache.hadoop.service.Service.STATE"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Query the service state. This is a non-blocking operation.
- @return the state]]>
- </doc>
- </method>
- <method name="isInState" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="proposed" type="org.apache.hadoop.service.Service.STATE"/>
- <doc>
- <![CDATA[Query that the state is in a specific state
- @param proposed proposed new state
- @return the state]]>
- </doc>
- </method>
- <method name="ensureCurrentState"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="expectedState" type="org.apache.hadoop.service.Service.STATE"/>
- <doc>
- <![CDATA[Verify that that a service is in a given state.
- @param expectedState the desired state
- @throws ServiceStateException if the service state is different from
- the desired state]]>
- </doc>
- </method>
- <method name="enterState" return="org.apache.hadoop.service.Service.STATE"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="proposed" type="org.apache.hadoop.service.Service.STATE"/>
- <doc>
- <![CDATA[Enter a state -thread safe.
- @param proposed proposed new state
- @return the original state
- @throws ServiceStateException if the transition is not permitted]]>
- </doc>
- </method>
- <method name="checkStateTransition"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="state" type="org.apache.hadoop.service.Service.STATE"/>
- <param name="proposed" type="org.apache.hadoop.service.Service.STATE"/>
- <doc>
- <![CDATA[Check that a state tansition is valid and
- throw an exception if not
- @param name name of the service (can be null)
- @param state current state
- @param proposed proposed new state]]>
- </doc>
- </method>
- <method name="isValidStateTransition" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="current" type="org.apache.hadoop.service.Service.STATE"/>
- <param name="proposed" type="org.apache.hadoop.service.Service.STATE"/>
- <doc>
- <![CDATA[Is a state transition valid?
- There are no checks for current==proposed
- as that is considered a non-transition.
- using an array kills off all branch misprediction costs, at the expense
- of cache line misses.
- @param current current state
- @param proposed proposed new state
- @return true if the transition to a new state is valid]]>
- </doc>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[return the state text as the toString() value
- @return the current state's description]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Implements the service state model.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.ServiceStateModel -->
- </package>
- <package name="org.apache.hadoop.service.launcher">
- <!-- start class org.apache.hadoop.service.launcher.AbstractLaunchableService -->
- <class name="AbstractLaunchableService" extends="org.apache.hadoop.service.AbstractService"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.service.launcher.LaunchableService"/>
- <constructor name="AbstractLaunchableService" type="java.lang.String"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Construct an instance with the given name.]]>
- </doc>
- </constructor>
- <method name="bindArgs" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="config" type="org.apache.hadoop.conf.Configuration"/>
- <param name="args" type="java.util.List"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[{@inheritDoc}
- <p>
- The base implementation logs all arguments at the debug level,
- then returns the passed in config unchanged.]]>
- </doc>
- </method>
- <method name="execute" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[{@inheritDoc}
- <p>
- The action is to signal success by returning the exit code 0.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Subclass of {@link AbstractService} that provides basic implementations
- of the {@link LaunchableService} methods.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.launcher.AbstractLaunchableService -->
- <!-- start class org.apache.hadoop.service.launcher.HadoopUncaughtExceptionHandler -->
- <class name="HadoopUncaughtExceptionHandler" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.lang.Thread.UncaughtExceptionHandler"/>
- <constructor name="HadoopUncaughtExceptionHandler" type="java.lang.Thread.UncaughtExceptionHandler"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance delegating to the supplied handler if
- the exception is considered "simple".
- @param delegate a delegate exception handler.]]>
- </doc>
- </constructor>
- <constructor name="HadoopUncaughtExceptionHandler"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Basic exception handler -logs simple exceptions, then continues.]]>
- </doc>
- </constructor>
- <method name="uncaughtException"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="thread" type="java.lang.Thread"/>
- <param name="exception" type="java.lang.Throwable"/>
- <doc>
- <![CDATA[Uncaught exception handler.
- If an error is raised: shutdown
- The state of the system is unknown at this point -attempting
- a clean shutdown is dangerous. Instead: exit
- @param thread thread that failed
- @param exception the raised exception]]>
- </doc>
- </method>
- <doc>
- <![CDATA[This class is intended to be installed by calling
- {@link Thread#setDefaultUncaughtExceptionHandler(UncaughtExceptionHandler)}
- in the main entry point.
- The base class will always attempt to shut down the process if an Error
- was raised; the behavior on a standard Exception, raised outside
- process shutdown, is simply to log it.
- (Based on the class {@code YarnUncaughtExceptionHandler})]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.launcher.HadoopUncaughtExceptionHandler -->
- <!-- start interface org.apache.hadoop.service.launcher.LaunchableService -->
- <interface name="LaunchableService" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.service.Service"/>
- <method name="bindArgs" return="org.apache.hadoop.conf.Configuration"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="config" type="org.apache.hadoop.conf.Configuration"/>
- <param name="args" type="java.util.List"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Propagate the command line arguments.
- <p>
- This method is called before {@link #init(Configuration)};
- Any non-null configuration that is returned from this operation
- becomes the one that is passed on to that {@link #init(Configuration)}
- operation.
- <p>
- This permits implementations to change the configuration before
- the init operation. As the ServiceLauncher only creates
- an instance of the base {@link Configuration} class, it is
- recommended to instantiate any subclass (such as YarnConfiguration)
- that injects new resources.
- <p>
- @param config the initial configuration build up by the
- service launcher.
- @param args list of arguments passed to the command line
- after any launcher-specific commands have been stripped.
- @return the configuration to init the service with.
- Recommended: pass down the config parameter with any changes
- @throws Exception any problem]]>
- </doc>
- </method>
- <method name="execute" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Run a service. This method is called after {@link Service#start()}.
- <p>
- The return value becomes the exit code of the launched process.
- <p>
- If an exception is raised, the policy is:
- <ol>
- <li>Any subset of {@link org.apache.hadoop.util.ExitUtil.ExitException}:
- the exception is passed up unmodified.
- </li>
- <li>Any exception which implements
- {@link org.apache.hadoop.util.ExitCodeProvider}:
- A new {@link ServiceLaunchException} is created with the exit code
- and message of the thrown exception; the thrown exception becomes the
- cause.</li>
- <li>Any other exception: a new {@link ServiceLaunchException} is created
- with the exit code {@link LauncherExitCodes#EXIT_EXCEPTION_THROWN} and
- the message of the original exception (which becomes the cause).</li>
- </ol>
- @return the exit code
- @throws org.apache.hadoop.util.ExitUtil.ExitException an exception passed
- up as the exit code and error text.
- @throws Exception any exception to report. If it provides an exit code
- this is used in a wrapping exception.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[An interface which services can implement to have their
- execution managed by the ServiceLauncher.
- <p>
- The command line options will be passed down before the
- {@link Service#init(Configuration)} operation is invoked via an
- invocation of {@link LaunchableService#bindArgs(Configuration, List)}
- After the service has been successfully started via {@link Service#start()}
- the {@link LaunchableService#execute()} method is called to execute the
- service. When this method returns, the service launcher will exit, using
- the return code from the method as its exit option.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.service.launcher.LaunchableService -->
- <!-- start interface org.apache.hadoop.service.launcher.LauncherExitCodes -->
- <interface name="LauncherExitCodes" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <field name="EXIT_SUCCESS" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Success: {@value}.]]>
- </doc>
- </field>
- <field name="EXIT_FAIL" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Generic "false/fail" response: {@value}.
- The operation worked but the result was not "true" from the viewpoint
- of the executed code.]]>
- </doc>
- </field>
- <field name="EXIT_CLIENT_INITIATED_SHUTDOWN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when a client requested service termination: {@value}.]]>
- </doc>
- </field>
- <field name="EXIT_TASK_LAUNCH_FAILURE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when targets could not be launched: {@value}.]]>
- </doc>
- </field>
- <field name="EXIT_INTERRUPTED" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when a control-C, kill -3, signal was picked up: {@value}.]]>
- </doc>
- </field>
- <field name="EXIT_OTHER_FAILURE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when something happened but we can't be specific: {@value}.]]>
- </doc>
- </field>
- <field name="EXIT_COMMAND_ARGUMENT_ERROR" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when the command line doesn't parse: {@value}, or
- when it is otherwise invalid.
- <p>
- Approximate HTTP equivalent: {@code 400 Bad Request}]]>
- </doc>
- </field>
- <field name="EXIT_UNAUTHORIZED" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The request requires user authentication: {@value}.
- <p>
- approximate HTTP equivalent: Approximate HTTP equivalent: {@code 401 Unauthorized}]]>
- </doc>
- </field>
- <field name="EXIT_USAGE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when a usage message was printed: {@value}.]]>
- </doc>
- </field>
- <field name="EXIT_FORBIDDEN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Forbidden action: {@value}.
- <p>
- Approximate HTTP equivalent: Approximate HTTP equivalent: {@code 403: Forbidden}]]>
- </doc>
- </field>
- <field name="EXIT_NOT_FOUND" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Something was not found: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 404: Not Found}]]>
- </doc>
- </field>
- <field name="EXIT_OPERATION_NOT_ALLOWED" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The operation is not allowed: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 405: Not allowed}]]>
- </doc>
- </field>
- <field name="EXIT_NOT_ACCEPTABLE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The command is somehow not acceptable: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 406: Not Acceptable}]]>
- </doc>
- </field>
- <field name="EXIT_CONNECTIVITY_PROBLEM" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code on connectivity problems: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 408: Request Timeout}]]>
- </doc>
- </field>
- <field name="EXIT_BAD_CONFIGURATION" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when the configurations in valid/incomplete: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 409: Conflict}]]>
- </doc>
- </field>
- <field name="EXIT_EXCEPTION_THROWN" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Exit code when an exception was thrown from the service: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 500 Internal Server Error}]]>
- </doc>
- </field>
- <field name="EXIT_UNIMPLEMENTED" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Unimplemented feature: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 501: Not Implemented}]]>
- </doc>
- </field>
- <field name="EXIT_SERVICE_UNAVAILABLE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Service Unavailable; it may be available later: {@value}.
- <p>
- Approximate HTTP equivalent: {@code 503 Service Unavailable}]]>
- </doc>
- </field>
- <field name="EXIT_UNSUPPORTED_VERSION" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The application does not support, or refuses to support this
- version: {@value}.
- <p>
- If raised, this is expected to be raised server-side and likely due
- to client/server version incompatibilities.
- <p>
- Approximate HTTP equivalent: {@code 505: Version Not Supported}]]>
- </doc>
- </field>
- <field name="EXIT_SERVICE_CREATION_FAILURE" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The service instance could not be created: {@value}.]]>
- </doc>
- </field>
- <field name="EXIT_SERVICE_LIFECYCLE_EXCEPTION" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The service instance could not be created: {@value}.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Common Exit codes.
- <p>
- Codes with a YARN prefix are YARN-related.
- <p>
- Many of the exit codes are designed to resemble HTTP error codes,
- squashed into a single byte. e.g 44 , "not found" is the equivalent
- of 404. The various 2XX HTTP error codes aren't followed;
- the Unix standard of "0" for success is used.
- <pre>
- 0-10: general command issues
- 30-39: equivalent to the 3XX responses, where those responses are
- considered errors by the application.
- 40-49: client-side/CLI/config problems
- 50-59: service-side problems.
- 60+ : application specific error codes
- </pre>]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.service.launcher.LauncherExitCodes -->
- <!-- start class org.apache.hadoop.service.launcher.ServiceLaunchException -->
- <class name="ServiceLaunchException" extends="org.apache.hadoop.util.ExitUtil.ExitException"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.util.ExitCodeProvider"/>
- <implements name="org.apache.hadoop.service.launcher.LauncherExitCodes"/>
- <constructor name="ServiceLaunchException" type="int, java.lang.Throwable"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an exception with the specific exit code.
- @param exitCode exit code
- @param cause cause of the exception]]>
- </doc>
- </constructor>
- <constructor name="ServiceLaunchException" type="int, java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an exception with the specific exit code and text.
- @param exitCode exit code
- @param message message to use in exception]]>
- </doc>
- </constructor>
- <constructor name="ServiceLaunchException" type="int, java.lang.String, java.lang.Object[]"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a formatted exception.
- <p>
- This uses {@link String#format(String, Object...)}
- to build the formatted exception in the ENGLISH locale.
- <p>
- If the last argument is a throwable, it becomes the cause of the exception.
- It will also be used as a parameter for the format.
- @param exitCode exit code
- @param format format for message to use in exception
- @param args list of arguments]]>
- </doc>
- </constructor>
- <doc>
- <![CDATA[A service launch exception that includes an exit code.
- <p>
- When caught by the ServiceLauncher, it will convert that
- into a process exit code.
-
- The {@link #ServiceLaunchException(int, String, Object...)} constructor
- generates formatted exceptions.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.service.launcher.ServiceLaunchException -->
- </package>
- <package name="org.apache.hadoop.tools">
- </package>
- <package name="org.apache.hadoop.tools.protocolPB">
- </package>
- <package name="org.apache.hadoop.tracing">
- <!-- start class org.apache.hadoop.tracing.SpanReceiverInfo -->
- <class name="SpanReceiverInfo" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="getId" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getClassName" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- </class>
- <!-- end class org.apache.hadoop.tracing.SpanReceiverInfo -->
- <!-- start class org.apache.hadoop.tracing.SpanReceiverInfoBuilder -->
- <class name="SpanReceiverInfoBuilder" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="SpanReceiverInfoBuilder" type="java.lang.String"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="addConfigurationPair"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="java.lang.String"/>
- <param name="value" type="java.lang.String"/>
- </method>
- <method name="build" return="org.apache.hadoop.tracing.SpanReceiverInfo"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- </class>
- <!-- end class org.apache.hadoop.tracing.SpanReceiverInfoBuilder -->
- <!-- start interface org.apache.hadoop.tracing.TraceAdminProtocol -->
- <interface name="TraceAdminProtocol" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="listSpanReceivers" return="org.apache.hadoop.tracing.SpanReceiverInfo[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[List the currently active trace span receivers.
-
- @throws IOException On error.]]>
- </doc>
- </method>
- <method name="addSpanReceiver" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="desc" type="org.apache.hadoop.tracing.SpanReceiverInfo"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Add a new trace span receiver.
-
- @param desc The span receiver description.
- @return The ID of the new trace span receiver.
- @throws IOException On error.]]>
- </doc>
- </method>
- <method name="removeSpanReceiver"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="spanReceiverId" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Remove a trace span receiver.
- @param spanReceiverId The id of the span receiver to remove.
- @throws IOException On error.]]>
- </doc>
- </method>
- <field name="versionID" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <doc>
- <![CDATA[Protocol interface that provides tracing.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.tracing.TraceAdminProtocol -->
- <!-- start interface org.apache.hadoop.tracing.TraceAdminProtocolPB -->
- <interface name="TraceAdminProtocolPB" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.tracing.TraceAdminPB.TraceAdminService.BlockingInterface"/>
- <implements name="org.apache.hadoop.ipc.VersionedProtocol"/>
- </interface>
- <!-- end interface org.apache.hadoop.tracing.TraceAdminProtocolPB -->
- </package>
- <package name="org.apache.hadoop.util">
- <!-- start class org.apache.hadoop.util.ApplicationClassLoader -->
- <class name="ApplicationClassLoader" extends="java.net.URLClassLoader"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ApplicationClassLoader" type="java.net.URL[], java.lang.ClassLoader, java.util.List"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <constructor name="ApplicationClassLoader" type="java.lang.String, java.lang.ClassLoader, java.util.List"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="MalformedURLException" type="java.net.MalformedURLException"/>
- </constructor>
- <method name="getResource" return="java.net.URL"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- </method>
- <method name="loadClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <exception name="ClassNotFoundException" type="java.lang.ClassNotFoundException"/>
- </method>
- <method name="loadClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="true"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="resolve" type="boolean"/>
- <exception name="ClassNotFoundException" type="java.lang.ClassNotFoundException"/>
- </method>
- <method name="isSystemClass" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="name" type="java.lang.String"/>
- <param name="systemClasses" type="java.util.List"/>
- <doc>
- <![CDATA[Checks if a class should be included as a system class.
- A class is a system class if and only if it matches one of the positive
- patterns and none of the negative ones.
- @param name the class name to check
- @param systemClasses a list of system class configurations.
- @return true if the class is a system class]]>
- </doc>
- </method>
- <field name="SYSTEM_CLASSES_DEFAULT" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default value of the system classes if the user did not override them.
- JDK classes, hadoop classes and resources, and some select third-party
- classes are considered system classes, and are not loaded by the
- application classloader.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[A {@link URLClassLoader} for application isolation. Classes from the
- application JARs are loaded in preference to the parent loader.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.ApplicationClassLoader -->
- <!-- start interface org.apache.hadoop.util.IPList -->
- <interface name="IPList" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="isIn" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ipAddress" type="java.lang.String"/>
- <doc>
- <![CDATA[returns true if the ipAddress is in the IPList.
- @param ipAddress
- @return boolean value indicating whether the ipAddress is in the IPList]]>
- </doc>
- </method>
- </interface>
- <!-- end interface org.apache.hadoop.util.IPList -->
- <!-- start interface org.apache.hadoop.util.Progressable -->
- <interface name="Progressable" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <method name="progress"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Report progress to the Hadoop framework.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A facility for reporting progress.
-
- <p>Clients and/or applications can use the provided <code>Progressable</code>
- to explicitly report progress to the Hadoop framework. This is especially
- important for operations which take significant amount of time since,
- in-lieu of the reported progress, the framework has to assume that an error
- has occured and time-out the operation.</p>]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.util.Progressable -->
- <!-- start class org.apache.hadoop.util.PureJavaCrc32 -->
- <class name="PureJavaCrc32" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.util.zip.Checksum"/>
- <constructor name="PureJavaCrc32"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new PureJavaCrc32 object.]]>
- </doc>
- </constructor>
- <method name="getValue" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="reset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="update"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="offset" type="int"/>
- <param name="len" type="int"/>
- </method>
- <method name="update"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="int"/>
- </method>
- <doc>
- <![CDATA[A pure-java implementation of the CRC32 checksum that uses
- the same polynomial as the built-in native CRC32.
- This is to avoid the JNI overhead for certain uses of Checksumming
- where many small pieces of data are checksummed in succession.
- The current version is ~10x to 1.8x as fast as Sun's native
- java.util.zip.CRC32 in Java 1.6
- @see java.util.zip.CRC32]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.PureJavaCrc32 -->
- <!-- start class org.apache.hadoop.util.PureJavaCrc32C -->
- <class name="PureJavaCrc32C" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="java.util.zip.Checksum"/>
- <constructor name="PureJavaCrc32C"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a new PureJavaCrc32 object.]]>
- </doc>
- </constructor>
- <method name="getValue" return="long"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="reset"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="update"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="byte[]"/>
- <param name="off" type="int"/>
- <param name="len" type="int"/>
- </method>
- <method name="update"
- abstract="false" native="false" synchronized="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <param name="b" type="int"/>
- </method>
- <doc>
- <![CDATA[A pure-java implementation of the CRC32 checksum that uses
- the CRC32-C polynomial, the same polynomial used by iSCSI
- and implemented on many Intel chipsets supporting SSE4.2.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.PureJavaCrc32C -->
- <!-- start class org.apache.hadoop.util.ReflectionUtils -->
- <class name="ReflectionUtils" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ReflectionUtils"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="setConf"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="theObject" type="java.lang.Object"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Check and set 'configuration' if necessary.
-
- @param theObject object for which to set configuration
- @param conf Configuration]]>
- </doc>
- </method>
- <method name="newInstance" return="T"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="theClass" type="java.lang.Class"/>
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <doc>
- <![CDATA[Create an object for the given class and initialize it from conf
-
- @param theClass class of which an object is created
- @param conf Configuration
- @return a new object]]>
- </doc>
- </method>
- <method name="setContentionTracing"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="val" type="boolean"/>
- </method>
- <method name="printThreadInfo"
- abstract="false" native="false" synchronized="true"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="stream" type="java.io.PrintStream"/>
- <param name="title" type="java.lang.String"/>
- <doc>
- <![CDATA[Print all of the thread's information and stack traces.
-
- @param stream the stream to
- @param title a string title for the stack trace]]>
- </doc>
- </method>
- <method name="logThreadInfo"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="log" type="org.apache.commons.logging.Log"/>
- <param name="title" type="java.lang.String"/>
- <param name="minInterval" type="long"/>
- <doc>
- <![CDATA[Log the current thread stacks at INFO level.
- @param log the logger that logs the stack trace
- @param title a descriptive title for the call stacks
- @param minInterval the minimum time from the last]]>
- </doc>
- </method>
- <method name="logThreadInfo"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="log" type="org.slf4j.Logger"/>
- <param name="title" type="java.lang.String"/>
- <param name="minInterval" type="long"/>
- <doc>
- <![CDATA[Log the current thread stacks at INFO level.
- @param log the logger that logs the stack trace
- @param title a descriptive title for the call stacks
- @param minInterval the minimum time from the last]]>
- </doc>
- </method>
- <method name="getClass" return="java.lang.Class"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="o" type="T"/>
- <doc>
- <![CDATA[Return the correctly-typed {@link Class} of the given object.
-
- @param o object whose correctly-typed <code>Class</code> is to be obtained
- @return the correctly typed <code>Class</code> of the given object.]]>
- </doc>
- </method>
- <method name="copy" return="T"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="src" type="T"/>
- <param name="dst" type="T"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Make a copy of the writable object using serialization to a buffer
- @param src the object to copy from
- @param dst the object to copy into, which is destroyed
- @return dst param (the copy)
- @throws IOException]]>
- </doc>
- </method>
- <method name="cloneWritableInto"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="dst" type="org.apache.hadoop.io.Writable"/>
- <param name="src" type="org.apache.hadoop.io.Writable"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="getDeclaredFieldsIncludingInherited" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="clazz" type="java.lang.Class"/>
- <doc>
- <![CDATA[Gets all the declared fields of a class including fields declared in
- superclasses.]]>
- </doc>
- </method>
- <method name="getDeclaredMethodsIncludingInherited" return="java.util.List"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="clazz" type="java.lang.Class"/>
- <doc>
- <![CDATA[Gets all the declared methods of a class including methods declared in
- superclasses.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[General reflection utils]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.ReflectionUtils -->
- <!-- start class org.apache.hadoop.util.Shell -->
- <class name="Shell" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="Shell"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance with no minimum interval between runs; stderr is
- not merged with stdout.]]>
- </doc>
- </constructor>
- <constructor name="Shell" type="long"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create an instance with a minimum interval between executions; stderr is
- not merged with stdout.
- @param interval interval in milliseconds between command executions.]]>
- </doc>
- </constructor>
- <constructor name="Shell" type="long, boolean"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Create a shell instance which can be re-executed when the {@link #run()}
- method is invoked with a given elapsed time between calls.
- @param interval the minimum duration in milliseconds to wait before
- re-executing the command. If set to 0, there is no minimum.
- @param redirectErrorStream should the error stream be merged with
- the normal output stream?]]>
- </doc>
- </constructor>
- <method name="isJava7OrAbove" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="This call isn't needed any more: please remove uses of it.">
- <doc>
- <![CDATA[query to see if system is Java 7 or later.
- Now that Hadoop requires Java 7 or later, this always returns true.
- @deprecated This call isn't needed any more: please remove uses of it.
- @return true, always.]]>
- </doc>
- </method>
- <method name="checkWindowsCommandLineLength"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="commands" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Checks if a given command (String[]) fits in the Windows maximum command
- line length Note that the input is expected to already include space
- delimiters, no extra count will be added for delimiters.
- @param commands command parts, including any space delimiters]]>
- </doc>
- </method>
- <method name="getGroupsCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[a Unix command to get the current user's groups list.]]>
- </doc>
- </method>
- <method name="getGroupsForUserCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <doc>
- <![CDATA[A command to get a given user's groups list.
- If the OS is not WINDOWS, the command will get the user's primary group
- first and finally get the groups list which includes the primary group.
- i.e. the user's primary group will be included twice.]]>
- </doc>
- </method>
- <method name="getGroupsIDForUserCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="user" type="java.lang.String"/>
- <doc>
- <![CDATA[A command to get a given user's group id list.
- The command will get the user's primary group
- first and finally get the groups list which includes the primary group.
- i.e. the user's primary group will be included twice.
- This command does not support Windows and will only return group names.]]>
- </doc>
- </method>
- <method name="getUsersForNetgroupCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="netgroup" type="java.lang.String"/>
- <doc>
- <![CDATA[A command to get a given netgroup's user list.]]>
- </doc>
- </method>
- <method name="getGetPermissionCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a command to get permission information.]]>
- </doc>
- </method>
- <method name="getSetPermissionCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="perm" type="java.lang.String"/>
- <param name="recursive" type="boolean"/>
- <doc>
- <![CDATA[Return a command to set permission.]]>
- </doc>
- </method>
- <method name="getSetPermissionCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="perm" type="java.lang.String"/>
- <param name="recursive" type="boolean"/>
- <param name="file" type="java.lang.String"/>
- <doc>
- <![CDATA[Return a command to set permission for specific file.
- @param perm String permission to set
- @param recursive boolean true to apply to all sub-directories recursively
- @param file String file to set
- @return String[] containing command and arguments]]>
- </doc>
- </method>
- <method name="getSetOwnerCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="owner" type="java.lang.String"/>
- <doc>
- <![CDATA[Return a command to set owner.]]>
- </doc>
- </method>
- <method name="getSymlinkCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="target" type="java.lang.String"/>
- <param name="link" type="java.lang.String"/>
- <doc>
- <![CDATA[Return a command to create symbolic links.]]>
- </doc>
- </method>
- <method name="getReadlinkCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="link" type="java.lang.String"/>
- <doc>
- <![CDATA[Return a command to read the target of the a symbolic link.]]>
- </doc>
- </method>
- <method name="getCheckProcessIsAliveCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="pid" type="java.lang.String"/>
- <doc>
- <![CDATA[Return a command for determining if process with specified pid is alive.
- @param pid process ID
- @return a <code>kill -0</code> command or equivalent]]>
- </doc>
- </method>
- <method name="getSignalKillCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="code" type="int"/>
- <param name="pid" type="java.lang.String"/>
- <doc>
- <![CDATA[Return a command to send a signal to a given pid.]]>
- </doc>
- </method>
- <method name="getEnvironmentVariableRegex" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return a regular expression string that match environment variables.]]>
- </doc>
- </method>
- <method name="appendScriptExtension" return="java.io.File"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="parent" type="java.io.File"/>
- <param name="basename" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns a File referencing a script with the given basename, inside the
- given parent directory. The file extension is inferred by platform:
- <code>".cmd"</code> on Windows, or <code>".sh"</code> otherwise.
- @param parent File parent directory
- @param basename String script file basename
- @return File referencing the script in the directory]]>
- </doc>
- </method>
- <method name="appendScriptExtension" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="basename" type="java.lang.String"/>
- <doc>
- <![CDATA[Returns a script file name with the given basename.
- The file extension is inferred by platform:
- <code>".cmd"</code> on Windows, or <code>".sh"</code> otherwise.
- @param basename String script file basename
- @return String script file name]]>
- </doc>
- </method>
- <method name="getRunScriptCommand" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="script" type="java.io.File"/>
- <doc>
- <![CDATA[Returns a command to run the given script. The script interpreter is
- inferred by platform: cmd on Windows or bash otherwise.
- @param script File script to run
- @return String[] command to run the script]]>
- </doc>
- </method>
- <method name="getHadoopHome" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Get the Hadoop home directory. Raises an exception if not found
- @return the home dir
- @throws IOException if the home directory cannot be located.]]>
- </doc>
- </method>
- <method name="getQualifiedBin" return="java.io.File"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="executable" type="java.lang.String"/>
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <doc>
- <![CDATA[Fully qualify the path to a binary that should be in a known hadoop
- bin location. This is primarily useful for disambiguating call-outs
- to executable sub-components of Hadoop to avoid clashes with other
- executables that may be in the path. Caveat: this call doesn't
- just format the path to the bin directory. It also checks for file
- existence of the composed path. The output of this call should be
- cached by callers.
- @param executable executable
- @return executable file reference
- @throws FileNotFoundException if the path does not exist]]>
- </doc>
- </method>
- <method name="getQualifiedBinPath" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="executable" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Fully qualify the path to a binary that should be in a known hadoop
- bin location. This is primarily useful for disambiguating call-outs
- to executable sub-components of Hadoop to avoid clashes with other
- executables that may be in the path. Caveat: this call doesn't
- just format the path to the bin directory. It also checks for file
- existence of the composed path. The output of this call should be
- cached by callers.
- @param executable executable
- @return executable file reference
- @throws FileNotFoundException if the path does not exist
- @throws IOException on path canonicalization failures]]>
- </doc>
- </method>
- <method name="hasWinutilsPath" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Predicate to indicate whether or not the path to winutils is known.
- If true, then {@link #WINUTILS} is non-null, and both
- {@link #getWinUtilsPath()} and {@link #getWinUtilsFile()}
- will successfully return this value. Always false on non-windows systems.
- @return true if there is a valid path to the binary]]>
- </doc>
- </method>
- <method name="getWinUtilsPath" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Locate the winutils binary, or fail with a meaningful
- exception and stack trace as an RTE.
- This method is for use in methods which don't explicitly throw
- an <code>IOException</code>.
- @return the path to {@link #WINUTILS_EXE}
- @throws RuntimeException if the path is not resolvable]]>
- </doc>
- </method>
- <method name="getWinUtilsFile" return="java.io.File"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="FileNotFoundException" type="java.io.FileNotFoundException"/>
- <doc>
- <![CDATA[Get a file reference to winutils.
- Always raises an exception if there isn't one
- @return the file instance referring to the winutils bin.
- @throws FileNotFoundException on any failure to locate that file.]]>
- </doc>
- </method>
- <method name="checkIsBashSupported" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <exception name="InterruptedIOException" type="java.io.InterruptedIOException"/>
- </method>
- <method name="setEnvironment"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="env" type="java.util.Map"/>
- <doc>
- <![CDATA[Set the environment for the command.
- @param env Mapping of environment variables]]>
- </doc>
- </method>
- <method name="setWorkingDirectory"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="dir" type="java.io.File"/>
- <doc>
- <![CDATA[Set the working directory.
- @param dir The directory where the command will be executed]]>
- </doc>
- </method>
- <method name="run"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Check to see if a command needs to be executed and execute if needed.]]>
- </doc>
- </method>
- <method name="getExecString" return="java.lang.String[]"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[return an array containing the command name and its parameters.]]>
- </doc>
- </method>
- <method name="parseExecResult"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <param name="lines" type="java.io.BufferedReader"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Parse the execution result]]>
- </doc>
- </method>
- <method name="getEnvironment" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="env" type="java.lang.String"/>
- <doc>
- <![CDATA[Get an environment variable.
- @param env the environment var
- @return the value or null if it was unset.]]>
- </doc>
- </method>
- <method name="getProcess" return="java.lang.Process"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the current sub-process executing the given command.
- @return process executing the command]]>
- </doc>
- </method>
- <method name="getExitCode" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the exit code.
- @return the exit code of the process]]>
- </doc>
- </method>
- <method name="getWaitingThread" return="java.lang.Thread"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[get the thread that is waiting on this instance of <code>Shell</code>.
- @return the thread that ran runCommand() that spawned this shell
- or null if no thread is waiting for this shell to complete]]>
- </doc>
- </method>
- <method name="isTimedOut" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[To check if the passed script to shell command executor timed out or
- not.
- @return if the script timed out.]]>
- </doc>
- </method>
- <method name="execCommand" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="cmd" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Static method to execute a shell command.
- Covers most of the simple cases without requiring the user to implement
- the <code>Shell</code> interface.
- @param cmd shell command to execute.
- @return the output of the executed command.]]>
- </doc>
- </method>
- <method name="execCommand" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="env" type="java.util.Map"/>
- <param name="cmd" type="java.lang.String[]"/>
- <param name="timeout" type="long"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Static method to execute a shell command.
- Covers most of the simple cases without requiring the user to implement
- the <code>Shell</code> interface.
- @param env the map of environment key=value
- @param cmd shell command to execute.
- @param timeout time in milliseconds after which script should be marked timeout
- @return the output of the executed command.
- @throws IOException on any problem.]]>
- </doc>
- </method>
- <method name="execCommand" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="env" type="java.util.Map"/>
- <param name="cmd" type="java.lang.String[]"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Static method to execute a shell command.
- Covers most of the simple cases without requiring the user to implement
- the <code>Shell</code> interface.
- @param env the map of environment key=value
- @param cmd shell command to execute.
- @return the output of the executed command.
- @throws IOException on any problem.]]>
- </doc>
- </method>
- <method name="destroyAllShellProcesses"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Static method to destroy all running <code>Shell</code> processes.
- Iterates through a map of all currently running <code>Shell</code>
- processes and destroys them one by one. This method is thread safe]]>
- </doc>
- </method>
- <method name="getAllShells" return="java.util.Set"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Static method to return a Set of all <code>Shell</code> objects.]]>
- </doc>
- </method>
- <method name="getMemlockLimit" return="java.lang.Long"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="ulimit" type="java.lang.Long"/>
- <doc>
- <![CDATA[Static method to return the memory lock limit for datanode.
- @param ulimit max value at which memory locked should be capped.
- @return long value specifying the memory lock limit.]]>
- </doc>
- </method>
- <field name="LOG" type="org.slf4j.Logger"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="SYSPROP_HADOOP_HOME_DIR" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[System property for the Hadoop home directory: {@value}.]]>
- </doc>
- </field>
- <field name="ENV_HADOOP_HOME" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Environment variable for Hadoop's home dir: {@value}.]]>
- </doc>
- </field>
- <field name="WINDOWS_MAX_SHELL_LENGTH" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Maximum command line length in Windows
- KB830473 documents this as 8191]]>
- </doc>
- </field>
- <field name="WINDOWS_MAX_SHELL_LENGHT" type="int"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="use the correctly spelled constant.">
- <doc>
- <![CDATA[mis-spelling of {@link #WINDOWS_MAX_SHELL_LENGTH}.
- @deprecated use the correctly spelled constant.]]>
- </doc>
- </field>
- <field name="USER_NAME_COMMAND" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[a Unix command to get the current user's name: {@value}.]]>
- </doc>
- </field>
- <field name="WindowsProcessLaunchLock" type="java.lang.Object"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Windows <code>CreateProcess</code> synchronization object.]]>
- </doc>
- </field>
- <field name="osType" type="org.apache.hadoop.util.Shell.OSType"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the type of the operating system, as determined from parsing
- the <code>os.name</code> property.]]>
- </doc>
- </field>
- <field name="WINDOWS" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="SOLARIS" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="MAC" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="FREEBSD" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="LINUX" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="OTHER" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="PPC_64" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- </field>
- <field name="ENV_NAME_REGEX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Regular expression for environment variables: {@value}.]]>
- </doc>
- </field>
- <field name="SET_PERMISSION_COMMAND" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[a Unix command to set permission: {@value}.]]>
- </doc>
- </field>
- <field name="SET_OWNER_COMMAND" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[a Unix command to set owner: {@value}.]]>
- </doc>
- </field>
- <field name="SET_GROUP_COMMAND" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[a Unix command to set the change user's groups list: {@value}.]]>
- </doc>
- </field>
- <field name="LINK_COMMAND" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[a Unix command to create a link: {@value}.]]>
- </doc>
- </field>
- <field name="READ_LINK_COMMAND" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[a Unix command to get a link target: {@value}.]]>
- </doc>
- </field>
- <field name="timeOutInterval" type="long"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Time after which the executing script would be timedout.]]>
- </doc>
- </field>
- <field name="inheritParentEnv" type="boolean"
- transient="false" volatile="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Indicates if the parent env vars should be inherited or not]]>
- </doc>
- </field>
- <field name="WINUTILS" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="use one of the exception-raising getter methods,
- specifically {@link #getWinUtilsPath()} or {@link #getWinUtilsFile()}">
- <doc>
- <![CDATA[Location of winutils as a string; null if not found.
- <p>
- <i>Important: caller must check for this value being null</i>.
- The lack of such checks has led to many support issues being raised.
- <p>
- @deprecated use one of the exception-raising getter methods,
- specifically {@link #getWinUtilsPath()} or {@link #getWinUtilsFile()}]]>
- </doc>
- </field>
- <field name="isSetsidAvailable" type="boolean"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Flag which is true if setsid exists.]]>
- </doc>
- </field>
- <field name="TOKEN_SEPARATOR_REGEX" type="java.lang.String"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Token separator regex used to parse Shell tool outputs.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[A base class for running a Shell command.
- <code>Shell</code> can be used to run shell commands like <code>du</code> or
- <code>df</code>. It also offers facilities to gate commands by
- time-intervals.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.Shell -->
- <!-- start class org.apache.hadoop.util.ShutdownHookManager -->
- <class name="ShutdownHookManager" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <method name="get" return="org.apache.hadoop.util.ShutdownHookManager"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return <code>ShutdownHookManager</code> singleton.
- @return <code>ShutdownHookManager</code> singleton.]]>
- </doc>
- </method>
- <method name="addShutdownHook"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="shutdownHook" type="java.lang.Runnable"/>
- <param name="priority" type="int"/>
- <doc>
- <![CDATA[Adds a shutdownHook with a priority, the higher the priority
- the earlier will run. ShutdownHooks with same priority run
- in a non-deterministic order.
- @param shutdownHook shutdownHook <code>Runnable</code>
- @param priority priority of the shutdownHook.]]>
- </doc>
- </method>
- <method name="addShutdownHook"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="shutdownHook" type="java.lang.Runnable"/>
- <param name="priority" type="int"/>
- <param name="timeout" type="long"/>
- <param name="unit" type="java.util.concurrent.TimeUnit"/>
- <doc>
- <![CDATA[Adds a shutdownHook with a priority and timeout the higher the priority
- the earlier will run. ShutdownHooks with same priority run
- in a non-deterministic order. The shutdown hook will be terminated if it
- has not been finished in the specified period of time.
- @param shutdownHook shutdownHook <code>Runnable</code>
- @param priority priority of the shutdownHook
- @param timeout timeout of the shutdownHook
- @param unit unit of the timeout <code>TimeUnit</code>]]>
- </doc>
- </method>
- <method name="removeShutdownHook" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="shutdownHook" type="java.lang.Runnable"/>
- <doc>
- <![CDATA[Removes a shutdownHook.
- @param shutdownHook shutdownHook to remove.
- @return TRUE if the shutdownHook was registered and removed,
- FALSE otherwise.]]>
- </doc>
- </method>
- <method name="hasShutdownHook" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="shutdownHook" type="java.lang.Runnable"/>
- <doc>
- <![CDATA[Indicates if a shutdownHook is registered or not.
- @param shutdownHook shutdownHook to check if registered.
- @return TRUE/FALSE depending if the shutdownHook is is registered.]]>
- </doc>
- </method>
- <method name="isShutdownInProgress" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Indicates if shutdown is in progress or not.
-
- @return TRUE if the shutdown is in progress, otherwise FALSE.]]>
- </doc>
- </method>
- <method name="clearShutdownHooks"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[clear all registered shutdownHooks.]]>
- </doc>
- </method>
- <field name="TIMEOUT_MINIMUM" type="long"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Minimum shutdown timeout: {@value} second(s).]]>
- </doc>
- </field>
- <field name="TIME_UNIT_DEFAULT" type="java.util.concurrent.TimeUnit"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The default time unit used: seconds.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[The <code>ShutdownHookManager</code> enables running shutdownHook
- in a deterministic order, higher priority first.
- <p/>
- The JVM runs ShutdownHooks in a non-deterministic order or in parallel.
- This class registers a single JVM shutdownHook and run all the
- shutdownHooks registered to it (to this class) in order based on their
- priority.
- Unless a hook was registered with a shutdown explicitly set through
- {@link #addShutdownHook(Runnable, int, long, TimeUnit)},
- the shutdown time allocated to it is set by the configuration option
- {@link CommonConfigurationKeysPublic#SERVICE_SHUTDOWN_TIMEOUT} in
- {@code core-site.xml}, with a default value of
- {@link CommonConfigurationKeysPublic#SERVICE_SHUTDOWN_TIMEOUT_DEFAULT}
- seconds.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.ShutdownHookManager -->
- <!-- start class org.apache.hadoop.util.StringInterner -->
- <class name="StringInterner" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="StringInterner"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="strongIntern" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="sample" type="java.lang.String"/>
- <doc>
- <![CDATA[Interns and returns a reference to the representative instance
- for any of a collection of string instances that are equal to each other.
- Retains strong reference to the instance,
- thus preventing it from being garbage-collected.
-
- @param sample string instance to be interned
- @return strong reference to interned string instance]]>
- </doc>
- </method>
- <method name="weakIntern" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="sample" type="java.lang.String"/>
- <doc>
- <![CDATA[Interns and returns a reference to the representative instance
- for any of a collection of string instances that are equal to each other.
- Retains weak reference to the instance,
- and so does not prevent it from being garbage-collected.
-
- @param sample string instance to be interned
- @return weak reference to interned string instance]]>
- </doc>
- </method>
- <method name="internStringsInArray" return="java.lang.String[]"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="strings" type="java.lang.String[]"/>
- <doc>
- <![CDATA[Interns all the strings in the given array in place,
- returning the same array.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Provides string interning utility methods. For weak interning,
- we use the standard String.intern() call, that performs very well
- (no problems with PermGen overflowing, etc.) starting from JDK 7.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.StringInterner -->
- <!-- start class org.apache.hadoop.util.SysInfo -->
- <class name="SysInfo" extends="java.lang.Object"
- abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="SysInfo"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="newInstance" return="org.apache.hadoop.util.SysInfo"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Return default OS instance.
- @throws UnsupportedOperationException If cannot determine OS.
- @return Default instance for the detected OS.]]>
- </doc>
- </method>
- <method name="getVirtualMemorySize" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the total size of the virtual memory present in the system.
- @return virtual memory size in bytes.]]>
- </doc>
- </method>
- <method name="getPhysicalMemorySize" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the total size of the physical memory present in the system.
- @return physical memory size bytes.]]>
- </doc>
- </method>
- <method name="getAvailableVirtualMemorySize" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the total size of the available virtual memory present
- in the system.
- @return available virtual memory size in bytes.]]>
- </doc>
- </method>
- <method name="getAvailablePhysicalMemorySize" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the total size of the available physical memory present
- in the system.
- @return available physical memory size bytes.]]>
- </doc>
- </method>
- <method name="getNumProcessors" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the total number of logical processors present on the system.
- @return number of logical processors]]>
- </doc>
- </method>
- <method name="getNumCores" return="int"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain total number of physical cores present on the system.
- @return number of physical cores]]>
- </doc>
- </method>
- <method name="getCpuFrequency" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the CPU frequency of on the system.
- @return CPU frequency in kHz]]>
- </doc>
- </method>
- <method name="getCumulativeCpuTime" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the cumulative CPU time since the system is on.
- @return cumulative CPU time in milliseconds]]>
- </doc>
- </method>
- <method name="getCpuUsagePercentage" return="float"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the CPU usage % of the machine. Return -1 if it is unavailable
- @return CPU usage as a percentage (from 0 to 100) of available cycles.]]>
- </doc>
- </method>
- <method name="getNumVCoresUsed" return="float"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the number of VCores used. Return -1 if it is unavailable
- @return Number of VCores used a percentage (from 0 to #VCores).]]>
- </doc>
- </method>
- <method name="getNetworkBytesRead" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the aggregated number of bytes read over the network.
- @return total number of bytes read.]]>
- </doc>
- </method>
- <method name="getNetworkBytesWritten" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the aggregated number of bytes written to the network.
- @return total number of bytes written.]]>
- </doc>
- </method>
- <method name="getStorageBytesRead" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the aggregated number of bytes read from disks.
- @return total number of bytes read.]]>
- </doc>
- </method>
- <method name="getStorageBytesWritten" return="long"
- abstract="true" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Obtain the aggregated number of bytes written to disks.
- @return total number of bytes written.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Plugin to calculate resource information on the system.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.SysInfo -->
- <!-- start interface org.apache.hadoop.util.Tool -->
- <interface name="Tool" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.conf.Configurable"/>
- <method name="run" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Execute the command with the given arguments.
-
- @param args command specific arguments.
- @return exit code.
- @throws Exception]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A tool interface that supports handling of generic command-line options.
-
- <p><code>Tool</code>, is the standard for any Map-Reduce tool/application.
- The tool/application should delegate the handling of
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/CommandsManual.html#Generic_Options">
- standard command-line options</a> to {@link ToolRunner#run(Tool, String[])}
- and only handle its custom arguments.</p>
-
- <p>Here is how a typical <code>Tool</code> is implemented:</p>
- <p><blockquote><pre>
- public class MyApp extends Configured implements Tool {
-
- public int run(String[] args) throws Exception {
- // <code>Configuration</code> processed by <code>ToolRunner</code>
- Configuration conf = getConf();
-
- // Create a JobConf using the processed <code>conf</code>
- JobConf job = new JobConf(conf, MyApp.class);
-
- // Process custom command-line options
- Path in = new Path(args[1]);
- Path out = new Path(args[2]);
-
- // Specify various job-specific parameters
- job.setJobName("my-app");
- job.setInputPath(in);
- job.setOutputPath(out);
- job.setMapperClass(MyMapper.class);
- job.setReducerClass(MyReducer.class);
- // Submit the job, then poll for progress until the job is complete
- RunningJob runningJob = JobClient.runJob(job);
- if (runningJob.isSuccessful()) {
- return 0;
- } else {
- return 1;
- }
- }
-
- public static void main(String[] args) throws Exception {
- // Let <code>ToolRunner</code> handle generic command-line options
- int res = ToolRunner.run(new Configuration(), new MyApp(), args);
-
- System.exit(res);
- }
- }
- </pre></blockquote></p>
-
- @see GenericOptionsParser
- @see ToolRunner]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.util.Tool -->
- <!-- start class org.apache.hadoop.util.ToolRunner -->
- <class name="ToolRunner" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="ToolRunner"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </constructor>
- <method name="run" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="conf" type="org.apache.hadoop.conf.Configuration"/>
- <param name="tool" type="org.apache.hadoop.util.Tool"/>
- <param name="args" type="java.lang.String[]"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Runs the given <code>Tool</code> by {@link Tool#run(String[])}, after
- parsing with the given generic arguments. Uses the given
- <code>Configuration</code>, or builds one if null.
-
- Sets the <code>Tool</code>'s configuration with the possibly modified
- version of the <code>conf</code>.
-
- @param conf <code>Configuration</code> for the <code>Tool</code>.
- @param tool <code>Tool</code> to run.
- @param args command-line arguments to the tool.
- @return exit code of the {@link Tool#run(String[])} method.]]>
- </doc>
- </method>
- <method name="run" return="int"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="tool" type="org.apache.hadoop.util.Tool"/>
- <param name="args" type="java.lang.String[]"/>
- <exception name="Exception" type="java.lang.Exception"/>
- <doc>
- <![CDATA[Runs the <code>Tool</code> with its <code>Configuration</code>.
-
- Equivalent to <code>run(tool.getConf(), tool, args)</code>.
-
- @param tool <code>Tool</code> to run.
- @param args command-line arguments to the tool.
- @return exit code of the {@link Tool#run(String[])} method.]]>
- </doc>
- </method>
- <method name="printGenericCommandUsage"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.PrintStream"/>
- <doc>
- <![CDATA[Prints generic command-line argurments and usage information.
-
- @param out stream to write usage information to.]]>
- </doc>
- </method>
- <method name="confirmPrompt" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="prompt" type="java.lang.String"/>
- <exception name="IOException" type="java.io.IOException"/>
- <doc>
- <![CDATA[Print out a prompt to the user, and return true if the user
- responds with "y" or "yes". (case insensitive)]]>
- </doc>
- </method>
- <doc>
- <![CDATA[A utility to help run {@link Tool}s.
-
- <p><code>ToolRunner</code> can be used to run classes implementing
- <code>Tool</code> interface. It works in conjunction with
- {@link GenericOptionsParser} to parse the
- <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/CommandsManual.html#Generic_Options">
- generic hadoop command line arguments</a> and modifies the
- <code>Configuration</code> of the <code>Tool</code>. The
- application-specific options are passed along without being modified.
- </p>
-
- @see Tool
- @see GenericOptionsParser]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.ToolRunner -->
- <!-- start class org.apache.hadoop.util.VersionInfo -->
- <class name="VersionInfo" extends="java.lang.Object"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="VersionInfo" type="java.lang.String"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </constructor>
- <method name="_getVersion" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getRevision" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getBranch" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getDate" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getUser" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getUrl" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getSrcChecksum" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getBuildVersion" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="_getProtocVersion" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="protected"
- deprecated="not deprecated">
- </method>
- <method name="getVersion" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the Hadoop version.
- @return the Hadoop version string, eg. "0.6.3-dev"]]>
- </doc>
- </method>
- <method name="getRevision" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the Git commit hash of the repository when compiled.
- @return the commit hash, eg. "18f64065d5db6208daf50b02c1b5ed4ee3ce547a"]]>
- </doc>
- </method>
- <method name="getBranch" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the branch on which this originated.
- @return The branch name, e.g. "trunk" or "branches/branch-0.20"]]>
- </doc>
- </method>
- <method name="getDate" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The date that Hadoop was compiled.
- @return the compilation date in unix date format]]>
- </doc>
- </method>
- <method name="getUser" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[The user that compiled Hadoop.
- @return the username of the user]]>
- </doc>
- </method>
- <method name="getUrl" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the URL for the Hadoop repository.
- @return the URL of the Hadoop repository]]>
- </doc>
- </method>
- <method name="getSrcChecksum" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Get the checksum of the source files from which Hadoop was built.
- @return the checksum of the source files]]>
- </doc>
- </method>
- <method name="getBuildVersion" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the buildVersion which includes version,
- revision, user and date.
- @return the buildVersion]]>
- </doc>
- </method>
- <method name="getProtocVersion" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Returns the protoc version used for the build.
- @return the protoc version]]>
- </doc>
- </method>
- <method name="main"
- abstract="false" native="false" synchronized="false"
- static="true" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="args" type="java.lang.String[]"/>
- </method>
- <doc>
- <![CDATA[This class returns build information about Hadoop components.]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.VersionInfo -->
- <doc>
- <![CDATA[Common utilities.]]>
- </doc>
- </package>
- <package name="org.apache.hadoop.util.bloom">
- <!-- start class org.apache.hadoop.util.bloom.BloomFilter -->
- <class name="BloomFilter" extends="org.apache.hadoop.util.bloom.Filter"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="BloomFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default constructor - use with readFields]]>
- </doc>
- </constructor>
- <constructor name="BloomFilter" type="int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor
- @param vectorSize The vector size of <i>this</i> filter.
- @param nbHash The number of hash function to consider.
- @param hashType type of the hashing function (see
- {@link org.apache.hadoop.util.hash.Hash}).]]>
- </doc>
- </constructor>
- <method name="add"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- </method>
- <method name="and"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="membershipTest" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- </method>
- <method name="not"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="or"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="xor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="getVectorSize" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[@return size of the the bloomfilter]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Implements a <i>Bloom filter</i>, as defined by Bloom in 1970.
- <p>
- The Bloom filter is a data structure that was introduced in 1970 and that has been adopted by
- the networking research community in the past decade thanks to the bandwidth efficiencies that it
- offers for the transmission of set membership information between networked hosts. A sender encodes
- the information into a bit vector, the Bloom filter, that is more compact than a conventional
- representation. Computation and space costs for construction are linear in the number of elements.
- The receiver uses the filter to test whether various elements are members of the set. Though the
- filter will occasionally return a false positive, it will never return a false negative. When creating
- the filter, the sender can choose its desired point in a trade-off between the false positive rate and the size.
-
- <p>
- Originally created by
- <a href="http://www.one-lab.org">European Commission One-Lab Project 034819</a>.
-
- @see Filter The general behavior of a filter
-
- @see <a href="http://portal.acm.org/citation.cfm?id=362692&dl=ACM&coll=portal">Space/Time Trade-Offs in Hash Coding with Allowable Errors</a>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.bloom.BloomFilter -->
- <!-- start class org.apache.hadoop.util.bloom.CountingBloomFilter -->
- <class name="CountingBloomFilter" extends="org.apache.hadoop.util.bloom.Filter"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <constructor name="CountingBloomFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default constructor - use with readFields]]>
- </doc>
- </constructor>
- <constructor name="CountingBloomFilter" type="int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor
- @param vectorSize The vector size of <i>this</i> filter.
- @param nbHash The number of hash function to consider.
- @param hashType type of the hashing function (see
- {@link org.apache.hadoop.util.hash.Hash}).]]>
- </doc>
- </constructor>
- <method name="add"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- </method>
- <method name="delete"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- <doc>
- <![CDATA[Removes a specified key from <i>this</i> counting Bloom filter.
- <p>
- <b>Invariant</b>: nothing happens if the specified key does not belong to <i>this</i> counter Bloom filter.
- @param key The key to remove.]]>
- </doc>
- </method>
- <method name="and"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="membershipTest" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- </method>
- <method name="approximateCount" return="int"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- <doc>
- <![CDATA[This method calculates an approximate count of the key, i.e. how many
- times the key was added to the filter. This allows the filter to be
- used as an approximate <code>key -> count</code> map.
- <p>NOTE: due to the bucket size of this filter, inserting the same
- key more than 15 times will cause an overflow at all filter positions
- associated with this key, and it will significantly increase the error
- rate for this and other keys. For this reason the filter can only be
- used to store small count values <code>0 <= N << 15</code>.
- @param key key to be tested
- @return 0 if the key is not present. Otherwise, a positive value v will
- be returned such that <code>v == count</code> with probability equal to the
- error rate of this filter, and <code>v > count</code> otherwise.
- Additionally, if the filter experienced an underflow as a result of
- {@link #delete(Key)} operation, the return value may be lower than the
- <code>count</code> with the probability of the false negative rate of such
- filter.]]>
- </doc>
- </method>
- <method name="not"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="or"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="xor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Implements a <i>counting Bloom filter</i>, as defined by Fan et al. in a ToN
- 2000 paper.
- <p>
- A counting Bloom filter is an improvement to standard a Bloom filter as it
- allows dynamic additions and deletions of set membership information. This
- is achieved through the use of a counting vector instead of a bit vector.
- <p>
- Originally created by
- <a href="http://www.one-lab.org">European Commission One-Lab Project 034819</a>.
- @see Filter The general behavior of a filter
-
- @see <a href="http://portal.acm.org/citation.cfm?id=343571.343572">Summary cache: a scalable wide-area web cache sharing protocol</a>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.bloom.CountingBloomFilter -->
- <!-- start class org.apache.hadoop.util.bloom.DynamicBloomFilter -->
- <class name="DynamicBloomFilter" extends="org.apache.hadoop.util.bloom.Filter"
- abstract="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <constructor name="DynamicBloomFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Zero-args constructor for the serialization.]]>
- </doc>
- </constructor>
- <constructor name="DynamicBloomFilter" type="int, int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor.
- <p>
- Builds an empty Dynamic Bloom filter.
- @param vectorSize The number of bits in the vector.
- @param nbHash The number of hash function to consider.
- @param hashType type of the hashing function (see
- {@link org.apache.hadoop.util.hash.Hash}).
- @param nr The threshold for the maximum number of keys to record in a
- dynamic Bloom filter row.]]>
- </doc>
- </constructor>
- <method name="add"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- </method>
- <method name="and"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="membershipTest" return="boolean"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- </method>
- <method name="not"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="or"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="xor"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="filter" type="org.apache.hadoop.util.bloom.Filter"/>
- </method>
- <method name="toString" return="java.lang.String"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Implements a <i>dynamic Bloom filter</i>, as defined in the INFOCOM 2006 paper.
- <p>
- A dynamic Bloom filter (DBF) makes use of a <code>s * m</code> bit matrix but
- each of the <code>s</code> rows is a standard Bloom filter. The creation
- process of a DBF is iterative. At the start, the DBF is a <code>1 * m</code>
- bit matrix, i.e., it is composed of a single standard Bloom filter.
- It assumes that <code>n<sub>r</sub></code> elements are recorded in the
- initial bit vector, where <code>n<sub>r</sub> <= n</code> (<code>n</code> is
- the cardinality of the set <code>A</code> to record in the filter).
- <p>
- As the size of <code>A</code> grows during the execution of the application,
- several keys must be inserted in the DBF. When inserting a key into the DBF,
- one must first get an active Bloom filter in the matrix. A Bloom filter is
- active when the number of recorded keys, <code>n<sub>r</sub></code>, is
- strictly less than the current cardinality of <code>A</code>, <code>n</code>.
- If an active Bloom filter is found, the key is inserted and
- <code>n<sub>r</sub></code> is incremented by one. On the other hand, if there
- is no active Bloom filter, a new one is created (i.e., a new row is added to
- the matrix) according to the current size of <code>A</code> and the element
- is added in this new Bloom filter and the <code>n<sub>r</sub></code> value of
- this new Bloom filter is set to one. A given key is said to belong to the
- DBF if the <code>k</code> positions are set to one in one of the matrix rows.
- <p>
- Originally created by
- <a href="http://www.one-lab.org">European Commission One-Lab Project 034819</a>.
- @see Filter The general behavior of a filter
- @see BloomFilter A Bloom filter
-
- @see <a href="http://www.cse.fau.edu/~jie/research/publications/Publication_files/infocom2006.pdf">Theory and Network Applications of Dynamic Bloom Filters</a>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.bloom.DynamicBloomFilter -->
- <!-- start class org.apache.hadoop.util.bloom.HashFunction -->
- <class name="HashFunction" extends="java.lang.Object"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <constructor name="HashFunction" type="int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor.
- <p>
- Builds a hash function that must obey to a given maximum number of returned values and a highest value.
- @param maxValue The maximum highest returned value.
- @param nbHash The number of resulting hashed values.
- @param hashType type of the hashing function (see {@link Hash}).]]>
- </doc>
- </constructor>
- <method name="clear"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Clears <i>this</i> hash function. A NOOP]]>
- </doc>
- </method>
- <method name="hash" return="int[]"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="k" type="org.apache.hadoop.util.bloom.Key"/>
- <doc>
- <![CDATA[Hashes a specified key into several integers.
- @param k The specified key.
- @return The array of hashed values.]]>
- </doc>
- </method>
- <doc>
- <![CDATA[Implements a hash object that returns a certain number of hashed values.
-
- @see Key The general behavior of a key being stored in a filter
- @see Filter The general behavior of a filter]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.bloom.HashFunction -->
- <!-- start interface org.apache.hadoop.util.bloom.RemoveScheme -->
- <interface name="RemoveScheme" abstract="true"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <field name="RANDOM" type="short"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Random selection.
- <p>
- The idea is to randomly select a bit to reset.]]>
- </doc>
- </field>
- <field name="MINIMUM_FN" type="short"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[MinimumFN Selection.
- <p>
- The idea is to select the bit to reset that will generate the minimum
- number of false negative.]]>
- </doc>
- </field>
- <field name="MAXIMUM_FP" type="short"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[MaximumFP Selection.
- <p>
- The idea is to select the bit to reset that will remove the maximum number
- of false positive.]]>
- </doc>
- </field>
- <field name="RATIO" type="short"
- transient="false" volatile="false"
- static="true" final="true" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Ratio Selection.
- <p>
- The idea is to select the bit to reset that will, at the same time, remove
- the maximum number of false positve while minimizing the amount of false
- negative generated.]]>
- </doc>
- </field>
- <doc>
- <![CDATA[Defines the different remove scheme for retouched Bloom filters.
- <p>
- Originally created by
- <a href="http://www.one-lab.org">European Commission One-Lab Project 034819</a>.]]>
- </doc>
- </interface>
- <!-- end interface org.apache.hadoop.util.bloom.RemoveScheme -->
- <!-- start class org.apache.hadoop.util.bloom.RetouchedBloomFilter -->
- <class name="RetouchedBloomFilter" extends="org.apache.hadoop.util.bloom.BloomFilter"
- abstract="false"
- static="false" final="true" visibility="public"
- deprecated="not deprecated">
- <implements name="org.apache.hadoop.util.bloom.RemoveScheme"/>
- <constructor name="RetouchedBloomFilter"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Default constructor - use with readFields]]>
- </doc>
- </constructor>
- <constructor name="RetouchedBloomFilter" type="int, int, int"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <doc>
- <![CDATA[Constructor
- @param vectorSize The vector size of <i>this</i> filter.
- @param nbHash The number of hash function to consider.
- @param hashType type of the hashing function (see
- {@link org.apache.hadoop.util.hash.Hash}).]]>
- </doc>
- </constructor>
- <method name="add"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- </method>
- <method name="addFalsePositive"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="key" type="org.apache.hadoop.util.bloom.Key"/>
- <doc>
- <![CDATA[Adds a false positive information to <i>this</i> retouched Bloom filter.
- <p>
- <b>Invariant</b>: if the false positive is <code>null</code>, nothing happens.
- @param key The false positive key to add.]]>
- </doc>
- </method>
- <method name="addFalsePositive"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="coll" type="java.util.Collection"/>
- <doc>
- <![CDATA[Adds a collection of false positive information to <i>this</i> retouched Bloom filter.
- @param coll The collection of false positive.]]>
- </doc>
- </method>
- <method name="addFalsePositive"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="keys" type="java.util.List"/>
- <doc>
- <![CDATA[Adds a list of false positive information to <i>this</i> retouched Bloom filter.
- @param keys The list of false positive.]]>
- </doc>
- </method>
- <method name="addFalsePositive"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="keys" type="org.apache.hadoop.util.bloom.Key[]"/>
- <doc>
- <![CDATA[Adds an array of false positive information to <i>this</i> retouched Bloom filter.
- @param keys The array of false positive.]]>
- </doc>
- </method>
- <method name="selectiveClearing"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="k" type="org.apache.hadoop.util.bloom.Key"/>
- <param name="scheme" type="short"/>
- <doc>
- <![CDATA[Performs the selective clearing for a given key.
- @param k The false positive key to remove from <i>this</i> retouched Bloom filter.
- @param scheme The selective clearing scheme to apply.]]>
- </doc>
- </method>
- <method name="write"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="out" type="java.io.DataOutput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <method name="readFields"
- abstract="false" native="false" synchronized="false"
- static="false" final="false" visibility="public"
- deprecated="not deprecated">
- <param name="in" type="java.io.DataInput"/>
- <exception name="IOException" type="java.io.IOException"/>
- </method>
- <doc>
- <![CDATA[Implements a <i>retouched Bloom filter</i>, as defined in the CoNEXT 2006 paper.
- <p>
- It allows the removal of selected false positives at the cost of introducing
- random false negatives, and with the benefit of eliminating some random false
- positives at the same time.
-
- <p>
- Originally created by
- <a href="http://www.one-lab.org">European Commission One-Lab Project 034819</a>.
-
- @see Filter The general behavior of a filter
- @see BloomFilter A Bloom filter
- @see RemoveScheme The different selective clearing algorithms
-
- @see <a href="http://www-rp.lip6.fr/site_npa/site_rp/_publications/740-rbf_cameraready.pdf">Retouched Bloom Filters: Allowing Networked Applications to Trade Off Selected False Positives Against False Negatives</a>]]>
- </doc>
- </class>
- <!-- end class org.apache.hadoop.util.bloom.RetouchedBloomFilter -->
- </package>
- <package name="org.apache.hadoop.util.curator">
- </package>
- <package name="org.apache.hadoop.util.hash">
- </package>
- </api>
|
