hadoop/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/resources/hdfs-rbf-default.xml

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!--
   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.
-->

<!-- Do not modify this file directly.  Instead, copy entries that you -->
<!-- wish to modify from this file into hdfs-site.xml and change them -->
<!-- there.  If hdfs-site.xml does not already exist, create it.      -->

<configuration>
  <property>
    <name>dfs.federation.router.default.nameserviceId</name>
    <value></value>
    <description>
      Nameservice identifier of the default subcluster to monitor.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.default.nameservice.enable</name>
    <value>true</value>
    <description>
      The default subcluster is enabled to read and write files.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.rpc.enable</name>
    <value>true</value>
    <description>
      If true, the RPC service to handle client requests in the router is
      enabled.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.rpc-address</name>
    <value>0.0.0.0:8888</value>
    <description>
      RPC address that handles all clients requests.
      The value of this property will take the form of router-host1:rpc-port.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.rpc-bind-host</name>
    <value></value>
    <description>
      The actual address the RPC server will bind to. If this optional address is
      set, it overrides only the hostname portion of
      dfs.federation.router.rpc-address. This is useful for making the name node
      listen on all interfaces by setting it to 0.0.0.0.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.handler.count</name>
    <value>10</value>
    <description>
      The number of server threads for the router to handle RPC requests from
      clients.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.handler.queue.size</name>
    <value>100</value>
    <description>
      The size of the queue for the number of handlers to handle RPC client requests.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.reader.count</name>
    <value>1</value>
    <description>
      The number of readers for the router to handle RPC client requests.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.reader.queue.size</name>
    <value>100</value>
    <description>
      The size of the queue for the number of readers for the router to handle RPC client requests.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.connection.creator.queue-size</name>
    <value>100</value>
    <description>
      Size of async connection creator queue.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.connection.pool-size</name>
    <value>1</value>
    <description>
      Size of the pool of connections from the router to namenodes.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.connection.clean.ms</name>
    <value>10000</value>
    <description>
      Time interval, in milliseconds, to check if the connection pool should
      remove unused connections.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.connection.pool.clean.ms</name>
    <value>60000</value>
    <description>
      Time interval, in milliseconds, to check if the connection manager should
      remove unused connection pools.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.metrics.enable</name>
    <value>true</value>
    <description>
      If the metrics in the router are enabled.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.metrics.class</name>
    <value>org.apache.hadoop.hdfs.server.federation.metrics.FederationRPCPerformanceMonitor</value>
    <description>
      Class to monitor the RPC system in the router. It must implement the
      RouterRpcMonitor interface.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.admin.enable</name>
    <value>true</value>
    <description>
      If true, the RPC admin service to handle client requests in the router is
      enabled.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.admin-address</name>
    <value>0.0.0.0:8111</value>
    <description>
      RPC address that handles the admin requests.
      The value of this property will take the form of router-host1:rpc-port.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.admin-bind-host</name>
    <value></value>
    <description>
      The actual address the RPC admin server will bind to. If this optional
      address is set, it overrides only the hostname portion of
      dfs.federation.router.admin-address. This is useful for making the name
      node listen on all interfaces by setting it to 0.0.0.0.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.admin.handler.count</name>
    <value>1</value>
    <description>
      The number of server threads for the router to handle RPC requests from
      admin.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.http-address</name>
    <value>0.0.0.0:50071</value>
    <description>
      HTTP address that handles the web requests to the Router.
      The value of this property will take the form of router-host1:http-port.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.http-bind-host</name>
    <value></value>
    <description>
      The actual address the HTTP server will bind to. If this optional
      address is set, it overrides only the hostname portion of
      dfs.federation.router.http-address. This is useful for making the name
      node listen on all interfaces by setting it to 0.0.0.0.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.https-address</name>
    <value>0.0.0.0:50072</value>
    <description>
      HTTPS address that handles the web requests to the Router.
      The value of this property will take the form of router-host1:https-port.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.https-bind-host</name>
    <value></value>
    <description>
      The actual address the HTTPS server will bind to. If this optional
      address is set, it overrides only the hostname portion of
      dfs.federation.router.https-address. This is useful for making the name
      node listen on all interfaces by setting it to 0.0.0.0.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.http.enable</name>
    <value>true</value>
    <description>
      If the HTTP service to handle client requests in the router is enabled.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.metrics.enable</name>
    <value>true</value>
    <description>
      If the metrics service in the router is enabled.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.file.resolver.client.class</name>
    <value>org.apache.hadoop.hdfs.server.federation.resolver.MountTableResolver</value>
    <description>
      Class to resolve files to subclusters.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.namenode.resolver.client.class</name>
    <value>org.apache.hadoop.hdfs.server.federation.resolver.MembershipNamenodeResolver</value>
    <description>
      Class to resolve the namenode for a subcluster.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.store.enable</name>
    <value>true</value>
    <description>
      If true, the Router connects to the State Store.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.store.serializer</name>
    <value>org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreSerializerPBImpl</value>
    <description>
      Class to serialize State Store records.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.store.driver.class</name>
    <value>org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreZooKeeperImpl</value>
    <description>
      Class to implement the State Store. There are three implementation classes currently
      being supported:
      org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreFileImpl,
      org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreFileSystemImpl and
      org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreZooKeeperImpl.
      These implementation classes use the local file, filesystem and ZooKeeper as a backend respectively.
      By default it uses the ZooKeeper as the default State Store.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.store.connection.test</name>
    <value>60000</value>
    <description>
      How often to check for the connection to the State Store in milliseconds.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.cache.ttl</name>
    <value>1m</value>
    <description>
      How often to refresh the State Store caches in milliseconds. This setting
      supports multiple time unit suffixes as described in
      dfs.heartbeat.interval. If no suffix is specified then milliseconds is
      assumed.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.store.membership.expiration</name>
    <value>300000</value>
    <description>
      Expiration time in milliseconds for a membership record.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.heartbeat.enable</name>
    <value>true</value>
    <description>
      If true, the Router heartbeats into the State Store.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.heartbeat.interval</name>
    <value>5000</value>
    <description>
      How often the Router should heartbeat into the State Store in milliseconds.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.heartbeat-state.interval</name>
    <value>5s</value>
    <description>
      How often the Router should heartbeat its state into the State Store in
      milliseconds. This setting supports multiple time unit suffixes as
      described in dfs.federation.router.quota-cache.update.interval.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.store.router.expiration</name>
    <value>5m</value>
    <description>
      Expiration time in milliseconds for a router state record. This setting
      supports multiple time unit suffixes as described in
      dfs.federation.router.quota-cache.update.interval.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.safemode.enable</name>
    <value>true</value>
    <description>
    </description>
  </property>

  <property>
    <name>dfs.federation.router.safemode.extension</name>
    <value>30s</value>
    <description>
      Time after startup that the Router is in safe mode. This setting
      supports multiple time unit suffixes as described in
      dfs.heartbeat.interval. If no suffix is specified then milliseconds is
      assumed.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.safemode.expiration</name>
    <value>3m</value>
    <description>
      Time without being able to reach the State Store to enter safe mode. This
      setting supports multiple time unit suffixes as described in
      dfs.heartbeat.interval. If no suffix is specified then milliseconds is
      assumed.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.monitor.namenode</name>
    <value></value>
    <description>
      The identifier of the namenodes to monitor and heartbeat.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.monitor.localnamenode.enable</name>
    <value>true</value>
    <description>
      If true, the Router should monitor the namenode in the local machine.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.mount-table.max-cache-size</name>
    <value>10000</value>
    <description>
      Maximum number of mount table cache entries to have.
      By default, remove cache entries if we have more than 10k.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.mount-table.cache.enable</name>
    <value>true</value>
    <description>
      Set to true to enable mount table cache (Path to Remote Location cache).
      Disabling the cache is recommended when a large amount of unique paths are queried.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.quota.enable</name>
    <value>false</value>
    <description>
      Set to true to enable quota system in Router.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.quota-cache.update.interval</name>
    <value>60s</value>
    <description>
      Interval time for updating quota usage cache in Router.
      This property is used only if the value of
      dfs.federation.router.quota.enable is true.
      This setting supports multiple time unit suffixes as described
      in dfs.heartbeat.interval. If no suffix is specified then milliseconds
      is assumed.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.client.thread-size</name>
    <value>32</value>
    <description>
      Max threads size for the RouterClient to execute concurrent
      requests.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.client.retry.max.attempts</name>
    <value>3</value>
    <description>
      Max retry attempts for the RouterClient talking to the Router.
    </description>
  </property>

  <property>
    <name>dfs.federation.router.client.reject.overload</name>
    <value>false</value>
    <description>
      Set to true to reject client requests when we run out of RPC client
      threads.
    </description>
  </property>

</configuration>