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@@ -41,7 +41,7 @@
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|start Project Logo
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+-->
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<div class="projectlogo">
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-<a href="http://hadoop.apache.org/core/"><img class="logoImage" alt="Hadoop" src="images/core-logo.jpg" title="Scalable Computing Platform"></a>
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+<a href="http://hadoop.apache.org/core/"><img class="logoImage" alt="Hadoop" src="images/core-logo.gif" title="Scalable Computing Platform"></a>
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</div>
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<!--+
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|end Project Logo
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@@ -200,6 +200,9 @@ document.write("Last Published: " + document.lastModified);
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<li>
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<a href="#3.6+gridservice-mapred+options">3.6 gridservice-mapred options</a>
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</li>
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+<li>
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+<a href="#3.7+hodring+options">3.7 hodring options</a>
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+</li>
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</ul>
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</li>
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</ul>
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@@ -288,9 +291,14 @@ document.write("Last Published: " + document.lastModified);
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<li>java-home: Location of Java to be used by Hadoop.</li>
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+
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+<li>syslog-address: Address to which a syslog daemon is bound to. The format
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+ of the value is host:port. If configured, HOD log messages
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+ will be logged to syslog using this value.</li>
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+
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</ul>
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-<a name="N1006B"></a><a name="3.2+hod+options"></a>
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+<a name="N1006E"></a><a name="3.2+hod+options"></a>
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<h3 class="h4">3.2 hod options</h3>
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<ul>
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@@ -305,7 +313,7 @@ document.write("Last Published: " + document.lastModified);
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should be used for running MapReduce jobs.</li>
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</ul>
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-<a name="N1007B"></a><a name="3.3+resource_manager+options"></a>
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+<a name="N1007E"></a><a name="3.3+resource_manager+options"></a>
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<h3 class="h4">3.3 resource_manager options</h3>
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<ul>
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@@ -328,7 +336,7 @@ document.write("Last Published: " + document.lastModified);
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can then use this variable.</li>
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</ul>
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-<a name="N1008E"></a><a name="3.4+ringmaster+options"></a>
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+<a name="N10091"></a><a name="3.4+ringmaster+options"></a>
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<h3 class="h4">3.4 ringmaster options</h3>
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<ul>
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@@ -341,7 +349,7 @@ document.write("Last Published: " + document.lastModified);
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and notes for the temp-dir variable apply here too.</li>
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</ul>
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-<a name="N1009B"></a><a name="3.5+gridservice-hdfs+options"></a>
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+<a name="N1009E"></a><a name="3.5+gridservice-hdfs+options"></a>
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<h3 class="h4">3.5 gridservice-hdfs options</h3>
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<ul>
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@@ -382,7 +390,7 @@ document.write("Last Published: " + document.lastModified);
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<li>final-server-params: Same as above, except they will be marked final.</li>
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</ul>
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-<a name="N100BA"></a><a name="3.6+gridservice-mapred+options"></a>
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+<a name="N100BD"></a><a name="3.6+gridservice-mapred+options"></a>
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<h3 class="h4">3.6 gridservice-mapred options</h3>
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<ul>
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@@ -414,6 +422,48 @@ document.write("Last Published: " + document.lastModified);
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<li>final-server-params: Same as above, except they will be marked final.</li>
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+</ul>
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+<a name="N100DC"></a><a name="3.7+hodring+options"></a>
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+<h3 class="h4">3.7 hodring options</h3>
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+<ul>
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+
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+<li>mapred-system-dir-root: Directory in the DFS under which HOD will
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+ generate sub-directory names and pass the full path
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+ as the value of the 'mapred.system.dir' configuration
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+ parameter to Hadoop daemons. The format of the full
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+ path will be value-of-this-option/userid/mapredsystem/cluster-id.
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+ Note that the directory specified here should be such
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+ that all users can create directories under this, if
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+ permissions are enabled in HDFS. Setting the value of
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+ this option to /user will make HOD use the user's
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+ home directory to generate the mapred.system.dir value.</li>
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+
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+
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+<li>log-destination-uri: URL describing a path in an external, static DFS or the
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+ cluster node's local file system where HOD will upload
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+ Hadoop logs when a cluster is deallocated. To specify a
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+ DFS path, use the format 'hdfs://path'. To specify a
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+ cluster node's local file path, use the format 'file://path'.
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+
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+ When clusters are deallocated by HOD, the hadoop logs will
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+ be deleted as part of HOD's cleanup process. In order to
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+ persist these logs, you can use this configuration option.
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+
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+ The format of the path is
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+ value-of-this-option/userid/hod-logs/cluster-id
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+
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+ Note that the directory you specify here must be such that all
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+ users can create sub-directories under this. Setting this value
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+ to hdfs://user will make the logs come in the user's home directory
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+ in DFS.</li>
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+
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+
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+<li>pkgs: Installation directory, under which bin/hadoop executable is located. This will
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+ be used by HOD to upload logs if a HDFS URL is specified in log-destination-uri
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+ option. Note that this is useful if the users are using a tarball whose version
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+ may differ from the external, static HDFS version.</li>
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+
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+
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</ul>
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</div>
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Nigel Daley
