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<a href="../../hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html">Storage Policies</a>
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<a href="../../hadoop-project-dist/hadoop-hdfs/MemoryStorage.html">Memory Storage Support</a>
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<a href="../../hadoop-project-dist/hadoop-hdfs/SLGUserGuide.html">Synthetic Load Generator</a>
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<a href="../../hadoop-project-dist/hadoop-hdfs/HDFSErasureCoding.html">Erasure Coding</a>
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<a href="../../hadoop-project-dist/hadoop-hdfs/HDFSDiskbalancer.html">Disk Balancer</a>
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<a href="../../hadoop-project-dist/hadoop-hdfs-rbf/HDFSRouterFederation.html">Router Federation</a>
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<a href="../../hadoop-project-dist/hadoop-hdfs/HdfsProvidedStorage.html">Provided Storage</a>
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<h5>MapReduce</h5>
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<ul>
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduceTutorial.html">Tutorial</a>
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapredCommands.html">Commands Reference</a>
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduce_Compatibility_Hadoop1_Hadoop2.html">Compatibility with 1.x</a>
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<li class="none">
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/EncryptedShuffle.html">Encrypted Shuffle</a>
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<li class="none">
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/PluggableShuffleAndPluggableSort.html">Pluggable Shuffle/Sort</a>
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/DistributedCacheDeploy.html">Distributed Cache Deploy</a>
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<li class="none">
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/SharedCacheSupport.html">Support for YARN Shared Cache</a>
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</ul>
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<h5>MapReduce REST APIs</h5>
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<ul>
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapredAppMasterRest.html">MR Application Master</a>
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<li class="none">
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<a href="../../hadoop-mapreduce-client/hadoop-mapreduce-client-hs/HistoryServerRest.html">MR History Server</a>
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</ul>
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<h5>YARN</h5>
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<ul>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/YARN.html">Architecture</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/YarnCommands.html">Commands Reference</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html">Capacity Scheduler</a>
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<a href="../../hadoop-yarn/hadoop-yarn-site/FairScheduler.html">Fair Scheduler</a>
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<a href="../../hadoop-yarn/hadoop-yarn-site/ResourceManagerRestart.html">ResourceManager Restart</a>
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<a href="../../hadoop-yarn/hadoop-yarn-site/ResourceManagerHA.html">ResourceManager HA</a>
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<a href="../../hadoop-yarn/hadoop-yarn-site/ResourceModel.html">Resource Model</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/NodeLabel.html">Node Labels</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/NodeAttributes.html">Node Attributes</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/WebApplicationProxy.html">Web Application Proxy</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/TimelineServer.html">Timeline Server</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html">Timeline Service V.2</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html">Writing YARN Applications</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/YarnApplicationSecurity.html">YARN Application Security</a>
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<a href="../../hadoop-yarn/hadoop-yarn-site/NodeManager.html">NodeManager</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/DockerContainers.html">Running Applications in Docker Containers</a>
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<a href="../../hadoop-yarn/hadoop-yarn-site/RuncContainers.html">Running Applications in runC Containers</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/NodeManagerCgroups.html">Using CGroups</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/SecureContainer.html">Secure Containers</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/ReservationSystem.html">Reservation System</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html">Graceful Decommission</a>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/OpportunisticContainers.html">Opportunistic Containers</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/Federation.html">YARN Federation</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/SharedCache.html">Shared Cache</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/UsingGpus.html">Using GPU</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/UsingFPGA.html">Using FPGA</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/PlacementConstraints.html">Placement Constraints</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/YarnUI2.html">YARN UI2</a>
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</li>
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</ul>
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<h5>YARN REST APIs</h5>
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<ul>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/WebServicesIntro.html">Introduction</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html">Resource Manager</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/NodeManagerRest.html">Node Manager</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/TimelineServer.html#Timeline_Server_REST_API_v1">Timeline Server</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html#Timeline_Service_v.2_REST_API">Timeline Service V.2</a>
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</li>
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</ul>
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<h5>YARN Service</h5>
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<ul>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/yarn-service/Overview.html">Overview</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/yarn-service/QuickStart.html">QuickStart</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/yarn-service/Concepts.html">Concepts</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/yarn-service/YarnServiceAPI.html">Yarn Service API</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/yarn-service/ServiceDiscovery.html">Service Discovery</a>
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</li>
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<li class="none">
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<a href="../../hadoop-yarn/hadoop-yarn-site/yarn-service/SystemServices.html">System Services</a>
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</li>
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</ul>
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<h5>Hadoop Compatible File Systems</h5>
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<ul>
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<li class="none">
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<a href="../../hadoop-aliyun/tools/hadoop-aliyun/index.html">Aliyun OSS</a>
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</li>
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<li class="none">
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<a href="../../hadoop-aws/tools/hadoop-aws/index.html">Amazon S3</a>
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</li>
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<li class="none">
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<a href="../../hadoop-azure/index.html">Azure Blob Storage</a>
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</li>
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<li class="none">
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<a href="../../hadoop-azure-datalake/index.html">Azure Data Lake Storage</a>
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</li>
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<li class="none">
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<a href="../../hadoop-cos/cloud-storage/index.html">Tencent COS</a>
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</li>
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<li class="none">
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<a href="../../hadoop-huaweicloud/cloud-storage/index.html">Huaweicloud OBS</a>
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</li>
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</ul>
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<h1>Hadoop: CLI MiniCluster.</h1>
|
|
<ul>
|
|
<li><a href="#Purpose">Purpose</a></li>
|
|
<li><a href="#Hadoop_Tarball">Hadoop Tarball</a></li>
|
|
<li><a href="#Running_the_MiniCluster">Running the MiniCluster</a></li></ul>
|
|
<section>
|
|
<h2><a name="Purpose"></a>Purpose</h2>
|
|
<p>Using the CLI MiniCluster, users can simply start and stop a single-node Hadoop cluster with a single command, and without the need to set any environment variables or manage configuration files. The CLI MiniCluster starts both a <code>YARN</code>/<code>MapReduce</code> & <code>HDFS</code> clusters.</p>
|
|
<p>This is useful for cases where users want to quickly experiment with a real Hadoop cluster or test non-Java programs that rely on significant Hadoop functionality.</p></section><section>
|
|
<h2><a name="Hadoop_Tarball"></a>Hadoop Tarball</h2>
|
|
<p>You should be able to obtain the Hadoop tarball from the release. Also, you can directly create a tarball from the source:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>$ mvn clean install -DskipTests
|
|
$ mvn package -Pdist -Dtar -DskipTests -Dmaven.javadoc.skip
|
|
</pre></div></div>
|
|
|
|
<p><b>NOTE:</b> You will need <a class="externalLink" href="http://code.google.com/p/protobuf/">protoc 2.5.0</a> installed.</p>
|
|
<p>The tarball should be available in <code>hadoop-dist/target/</code> directory.</p></section><section>
|
|
<h2><a name="Running_the_MiniCluster"></a>Running the MiniCluster</h2>
|
|
<p>From inside the root directory of the extracted tarball, you can start the CLI MiniCluster using the following command:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>$ bin/mapred minicluster -rmport RM_PORT -jhsport JHS_PORT
|
|
</pre></div></div>
|
|
|
|
<p>In the example command above, <code>RM_PORT</code> and <code>JHS_PORT</code> should be replaced by the user’s choice of these port numbers. If not specified, random free ports will be used.</p>
|
|
<p>There are a number of command line arguments that the users can use to control which services to start, and to pass other configuration properties. The available command line arguments:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>$ -D <property=value> Options to pass into configuration object
|
|
$ -datanodes <arg> How many datanodes to start (default 1)
|
|
$ -format Format the DFS (default false)
|
|
$ -help Prints option help.
|
|
$ -jhsport <arg> JobHistoryServer port (default 0--we choose)
|
|
$ -namenode <arg> URL of the namenode (default is either the DFS
|
|
$ cluster or a temporary dir)
|
|
$ -nnport <arg> NameNode port (default 0--we choose)
|
|
$ -nnhttpport <arg> NameNode HTTP port (default 0--we choose)
|
|
$ -nodemanagers <arg> How many nodemanagers to start (default 1)
|
|
$ -nodfs Don't start a mini DFS cluster
|
|
$ -nomr Don't start a mini MR cluster
|
|
$ -rmport <arg> ResourceManager port (default 0--we choose)
|
|
$ -writeConfig <path> Save configuration to this XML file.
|
|
$ -writeDetails <path> Write basic information to this JSON file.
|
|
</pre></div></div>
|
|
|
|
<p>To display this full list of available arguments, the user can pass the <code>-help</code> argument to the above command.</p></section>
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</div>
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