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 <div class="subTitle">org.apache.hadoop.mapred</div>
 <h2 title="Class JobClient" class="title">Class JobClient</h2>
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 <li>org.apache.hadoop.mapred.JobClient</li>
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 <pre>@InterfaceAudience.Public
  @InterfaceStability.Stable
 public class <span class="typeNameLabel">JobClient</span>
 extends <a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html" title="class in org.apache.hadoop.mapreduce.tools">CLI</a>
 implements <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></pre>
 <div class="block"><code>JobClient</code> is the primary interface for the user-job to interact
  with the cluster.

  <code>JobClient</code> provides facilities to submit jobs, track their
  progress, access component-tasks' reports/logs, get the Map-Reduce cluster
  status information etc.

  <p>The job submission process involves:
  <ol>
    <li>
    Checking the input and output specifications of the job.
    </li>
    <li>
    Computing the <a href="../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><code>InputSplit</code></a>s for the job.
    </li>
    <li>
    Setup the requisite accounting information for the <code>DistributedCache</code>
    of the job, if necessary.
    </li>
    <li>
    Copying the job's jar and configuration to the map-reduce system directory
    on the distributed file-system.
    </li>
    <li>
    Submitting the job to the cluster and optionally monitoring
    it's status.
    </li>
  </ol>

  Normally the user creates the application, describes various facets of the
  job via <a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred"><code>JobConf</code></a> and then uses the <code>JobClient</code> to submit
  the job and monitor its progress.

  <p>Here is an example on how to use <code>JobClient</code>:</p>
  <p><blockquote><pre>
      // Create a new JobConf
      JobConf job = new JobConf(new Configuration(), MyJob.class);

      // Specify various job-specific parameters
      job.setJobName("myjob");

      job.setInputPath(new Path("in"));
      job.setOutputPath(new Path("out"));

      job.setMapperClass(MyJob.MyMapper.class);
      job.setReducerClass(MyJob.MyReducer.class);

      // Submit the job, then poll for progress until the job is complete
      JobClient.runJob(job);
  </pre></blockquote>

  <b id="JobControl">Job Control</b>

  <p>At times clients would chain map-reduce jobs to accomplish complex tasks
  which cannot be done via a single map-reduce job. This is fairly easy since
  the output of the job, typically, goes to distributed file-system and that
  can be used as the input for the next job.</p>

  <p>However, this also means that the onus on ensuring jobs are complete
  (success/failure) lies squarely on the clients. In such situations the
  various job-control options are:
  <ol>
    <li>
    <a href="../../../../org/apache/hadoop/mapred/JobClient.html#runJob-org.apache.hadoop.mapred.JobConf-"><code>runJob(JobConf)</code></a> : submits the job and returns only after
    the job has completed.
    </li>
    <li>
    <a href="../../../../org/apache/hadoop/mapred/JobClient.html#submitJob-org.apache.hadoop.mapred.JobConf-"><code>submitJob(JobConf)</code></a> : only submits the job, then poll the
    returned handle to the <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred"><code>RunningJob</code></a> to query status and make
    scheduling decisions.
    </li>
    <li>
    <a href="../../../../org/apache/hadoop/mapred/JobConf.html#setJobEndNotificationURI-java.lang.String-"><code>JobConf.setJobEndNotificationURI(String)</code></a> : setup a notification
    on job-completion, thus avoiding polling.
    </li>
  </ol></div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred"><code>JobConf</code></a>,
 <a href="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred"><code>ClusterStatus</code></a>,
 <a href="../../../../org/apache/hadoop/util/Tool.html" title="interface in org.apache.hadoop.util"><code>Tool</code></a>,
 <code>DistributedCache</code></dd>
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 <code><a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html#cluster">cluster</a></code></li>
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 <caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colOne" scope="col">Constructor and Description</th>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#JobClient--">JobClient</a></span>()</code>
 <div class="block">Create a job client.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#JobClient-org.apache.hadoop.conf.Configuration-">JobClient</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf)</code>
 <div class="block">Build a job client with the given <a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf"><code>Configuration</code></a>,
  and connect to the default cluster</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#JobClient-java.net.InetSocketAddress-org.apache.hadoop.conf.Configuration-">JobClient</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/net/InetSocketAddress.html?is-external=true" title="class or interface in java.net">InetSocketAddress</a>&nbsp;jobTrackAddr,
          <a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf)</code>
 <div class="block">Build a job client, connect to the indicated job tracker.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#JobClient-org.apache.hadoop.mapred.JobConf-">JobClient</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;conf)</code>
 <div class="block">Build a job client with the given <a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred"><code>JobConf</code></a>, and connect to the
  default cluster</div>
 </td>
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 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Method and Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#cancelDelegationToken-org.apache.hadoop.security.token.Token-">cancelDelegationToken</a></span>(<a href="../../../../org/apache/hadoop/security/token/Token.html" title="class in org.apache.hadoop.security.token">Token</a>&lt;org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier&gt;&nbsp;token)</code>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
 <div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/hadoop/security/token/Token.html#cancel-org.apache.hadoop.conf.Configuration-"><code>Token.cancel(org.apache.hadoop.conf.Configuration)</code></a> instead</span></div>
 </div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#close--">close</a></span>()</code>
 <div class="block">Close the <code>JobClient</code>.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#displayTasks-org.apache.hadoop.mapred.JobID-java.lang.String-java.lang.String-">displayTasks</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobId,
             <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;type,
             <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;state)</code>
 <div class="block">Display the information about a job's tasks, of a particular type and
  in a particular state</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getAllJobs--">getAllJobs</a></span>()</code>
 <div class="block">Get the jobs that are submitted.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getChildQueues-java.lang.String-">getChildQueues</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;queueName)</code>
 <div class="block">Returns an array of queue information objects about immediate children
  of queue queueName.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getCleanupTaskReports-org.apache.hadoop.mapred.JobID-">getCleanupTaskReports</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobId)</code>
 <div class="block">Get the information of the current state of the cleanup tasks of a job.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapreduce/Cluster.html" title="class in org.apache.hadoop.mapreduce">Cluster</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getClusterHandle--">getClusterHandle</a></span>()</code>
 <div class="block">Get a handle to the Cluster</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getClusterStatus--">getClusterStatus</a></span>()</code>
 <div class="block">Get status information about the Map-Reduce cluster.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getClusterStatus-boolean-">getClusterStatus</a></span>(boolean&nbsp;detailed)</code>
 <div class="block">Get status information about the Map-Reduce cluster.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>protected long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getCounter-org.apache.hadoop.mapreduce.Counters-java.lang.String-java.lang.String-">getCounter</a></span>(<a href="../../../../org/apache/hadoop/mapreduce/Counters.html" title="class in org.apache.hadoop.mapreduce">Counters</a>&nbsp;cntrs,
           <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;counterGroupName,
           <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;counterName)</code>&nbsp;</td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getDefaultMaps--">getDefaultMaps</a></span>()</code>
 <div class="block">Get status information about the max available Maps in the cluster.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getDefaultReduces--">getDefaultReduces</a></span>()</code>
 <div class="block">Get status information about the max available Reduces in the cluster.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/security/token/Token.html" title="class in org.apache.hadoop.security.token">Token</a>&lt;org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getDelegationToken-org.apache.hadoop.io.Text-">getDelegationToken</a></span>(<a href="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;renewer)</code>
 <div class="block">Get a delegation token for the user from the JobTracker.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getFs--">getFs</a></span>()</code>
 <div class="block">Get a filesystem handle.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getJob-org.apache.hadoop.mapred.JobID-">getJob</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobid)</code>
 <div class="block">Get an <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred"><code>RunningJob</code></a> object to track an ongoing job.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getJob-java.lang.String-">getJob</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;jobid)</code>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
 <div class="block"><span class="deprecationComment">Applications should rather use <a href="../../../../org/apache/hadoop/mapred/JobClient.html#getJob-org.apache.hadoop.mapred.JobID-"><code>getJob(JobID)</code></a>.</span></div>
 </div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>protected <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getJobInner-org.apache.hadoop.mapred.JobID-">getJobInner</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobid)</code>&nbsp;</td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getJobsFromQueue-java.lang.String-">getJobsFromQueue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;queueName)</code>
 <div class="block">Gets all the jobs which were added to particular Job Queue</div>
 </td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getMapTaskReports-org.apache.hadoop.mapred.JobID-">getMapTaskReports</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobId)</code>
 <div class="block">Get the information of the current state of the map tasks of a job.</div>
 </td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getMapTaskReports-java.lang.String-">getMapTaskReports</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;jobId)</code>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
 <div class="block"><span class="deprecationComment">Applications should rather use <a href="../../../../org/apache/hadoop/mapred/JobClient.html#getMapTaskReports-org.apache.hadoop.mapred.JobID-"><code>getMapTaskReports(JobID)</code></a></span></div>
 </div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code>org.apache.hadoop.mapred.QueueAclsInfo[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getQueueAclsForCurrentUser--">getQueueAclsForCurrentUser</a></span>()</code>
 <div class="block">Gets the Queue ACLs for current user</div>
 </td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getQueueInfo-java.lang.String-">getQueueInfo</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;queueName)</code>
 <div class="block">Gets the queue information associated to a particular Job Queue</div>
 </td>
 </tr>
 <tr id="i22" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getQueues--">getQueues</a></span>()</code>
 <div class="block">Return an array of queue information objects about all the Job Queues
  configured.</div>
 </td>
 </tr>
 <tr id="i23" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getReduceTaskReports-org.apache.hadoop.mapred.JobID-">getReduceTaskReports</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobId)</code>
 <div class="block">Get the information of the current state of the reduce tasks of a job.</div>
 </td>
 </tr>
 <tr id="i24" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getReduceTaskReports-java.lang.String-">getReduceTaskReports</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;jobId)</code>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
 <div class="block"><span class="deprecationComment">Applications should rather use <a href="../../../../org/apache/hadoop/mapred/JobClient.html#getReduceTaskReports-org.apache.hadoop.mapred.JobID-"><code>getReduceTaskReports(JobID)</code></a></span></div>
 </div>
 </td>
 </tr>
 <tr id="i25" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getRootQueues--">getRootQueues</a></span>()</code>
 <div class="block">Returns an array of queue information objects about root level queues
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 </td>
 </tr>
 <tr id="i26" class="altColor">
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 <div class="block">Get the information of the current state of the setup tasks of a job.</div>
 </td>
 </tr>
 <tr id="i27" class="rowColor">
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 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#getStagingAreaDir--">getStagingAreaDir</a></span>()</code>
 <div class="block">Fetch the staging area directory for the application</div>
 </td>
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 <tr id="i28" class="altColor">
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 </td>
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 <tr id="i29" class="rowColor">
 <td class="colFirst"><code>org.apache.hadoop.mapred.JobClient.TaskStatusFilter</code></td>
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 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
 </td>
 </tr>
 <tr id="i30" class="altColor">
 <td class="colFirst"><code>static org.apache.hadoop.mapred.JobClient.TaskStatusFilter</code></td>
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 </td>
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 <tr id="i31" class="rowColor">
 <td class="colFirst"><code>void</code></td>
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 <td class="colFirst"><code>static boolean</code></td>
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 <div class="block">Checks if the job directory is clean and has all the required components
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 </td>
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 <tr id="i33" class="rowColor">
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 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#jobsToComplete--">jobsToComplete</a></span>()</code>
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 <tr id="i34" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#main-java.lang.String:A-">main</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;argv)</code>&nbsp;</td>
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 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#monitorAndPrintJob-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.RunningJob-">monitorAndPrintJob</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;conf,
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 <div class="block">Monitor a job and print status in real-time as progress is made and tasks
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 </td>
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 <tr id="i36" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#renewDelegationToken-org.apache.hadoop.security.token.Token-">renewDelegationToken</a></span>(<a href="../../../../org/apache/hadoop/security/token/Token.html" title="class in org.apache.hadoop.security.token">Token</a>&lt;org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier&gt;&nbsp;token)</code>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
 <div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/hadoop/security/token/Token.html#renew-org.apache.hadoop.conf.Configuration-"><code>Token.renew(org.apache.hadoop.conf.Configuration)</code></a> instead</span></div>
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 <tr id="i37" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#runJob-org.apache.hadoop.mapred.JobConf-">runJob</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job)</code>
 <div class="block">Utility that submits a job, then polls for progress until the job is
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 </td>
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 <tr id="i38" class="altColor">
 <td class="colFirst"><code>void</code></td>
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 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
 </td>
 </tr>
 <tr id="i39" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#setTaskOutputFilter-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.JobClient.TaskStatusFilter-">setTaskOutputFilter</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
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 <div class="block">Modify the JobConf to set the task output filter.</div>
 </td>
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 <tr id="i40" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobClient.html#submitJob-org.apache.hadoop.mapred.JobConf-">submitJob</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;conf)</code>
 <div class="block">Submit a job to the MR system.</div>
 </td>
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 <tr id="i41" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a></code></td>
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 <code><a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html#displayJobList-org.apache.hadoop.mapreduce.JobStatus:A-">displayJobList</a>, <a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html#displayTasks-org.apache.hadoop.mapreduce.Job-java.lang.String-java.lang.String-">displayTasks</a>, <a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html#getTaskLogURL-org.apache.hadoop.mapreduce.TaskAttemptID-java.lang.String-">getTaskLogURL</a>, <a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html#run-java.lang.String:A-">run</a></code></li>
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 <code><a href="../../../../org/apache/hadoop/conf/Configured.html#getConf--">getConf</a>, <a href="../../../../org/apache/hadoop/conf/Configured.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></code></li>
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 <code><a href="../../../../org/apache/hadoop/conf/Configurable.html#getConf--">getConf</a>, <a href="../../../../org/apache/hadoop/conf/Configurable.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></code></li>
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 <pre>public&nbsp;JobClient()</pre>
 <div class="block">Create a job client.</div>
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 <pre>public&nbsp;JobClient(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;conf)
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 <div class="block">Build a job client with the given <a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred"><code>JobConf</code></a>, and connect to the
  default cluster</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - the job configuration.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;JobClient(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf)
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 <div class="block">Build a job client with the given <a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf"><code>Configuration</code></a>,
  and connect to the default cluster</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - the configuration.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;JobClient(<a href="https://docs.oracle.com/javase/8/docs/api/java/net/InetSocketAddress.html?is-external=true" title="class or interface in java.net">InetSocketAddress</a>&nbsp;jobTrackAddr,
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 <div class="block">Build a job client, connect to the indicated job tracker.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>jobTrackAddr</code> - the job tracker to connect to.</dd>
 <dd><code>conf</code> - configuration.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <h4>init</h4>
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 <div class="block">Connect to the default cluster</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - the job configuration.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <h4>close</h4>
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 <div class="block">Close the <code>JobClient</code>.</div>
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 <dt><span class="throwsLabel">Throws:</span></dt>
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 <div class="block">Get a filesystem handle.  We need this to prepare jobs
  for submission to the MapReduce system.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the filesystem handle.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapreduce/Cluster.html" title="class in org.apache.hadoop.mapreduce">Cluster</a>&nbsp;getClusterHandle()</pre>
 <div class="block">Get a handle to the Cluster</div>
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 <div class="block">Submit a job to the MR system.

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 <dl>
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 <dt><span class="returnLabel">Returns:</span></dt>
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 <dt><span class="throwsLabel">Throws:</span></dt>
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 <div class="block">Submit a job to the MR system.
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  the running-job.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - the job configuration.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a handle to the <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred"><code>RunningJob</code></a> which can be used to track the
          running-job.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/FileNotFoundException.html?is-external=true" title="class or interface in java.io">FileNotFoundException</a></code></dd>
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 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a>&nbsp;getJob(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobid)
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 <div class="block">Get an <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred"><code>RunningJob</code></a> object to track an ongoing job.  Returns
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 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
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 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred"><code>RunningJob</code></a> handle to track the job, null if the
          <code>jobid</code> doesn't correspond to any known job.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
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 public&nbsp;<a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a>&nbsp;getJob(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;jobid)
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 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Applications should rather use <a href="../../../../org/apache/hadoop/mapred/JobClient.html#getJob-org.apache.hadoop.mapred.JobID-"><code>getJob(JobID)</code></a>.</span></div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]&nbsp;getMapTaskReports(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobId)
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 <div class="block">Get the information of the current state of the map tasks of a job.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>jobId</code> - the job to query.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the list of all of the map tips.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 public&nbsp;<a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]&nbsp;getMapTaskReports(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;jobId)
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 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Applications should rather use <a href="../../../../org/apache/hadoop/mapred/JobClient.html#getMapTaskReports-org.apache.hadoop.mapred.JobID-"><code>getMapTaskReports(JobID)</code></a></span></div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <div class="block">Get the information of the current state of the reduce tasks of a job.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>jobId</code> - the job to query.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the list of all of the reduce tips.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]&nbsp;getCleanupTaskReports(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobId)
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 <div class="block">Get the information of the current state of the cleanup tasks of a job.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>jobId</code> - the job to query.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the list of all of the cleanup tips.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]&nbsp;getSetupTaskReports(<a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a>&nbsp;jobId)
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 <div class="block">Get the information of the current state of the setup tasks of a job.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>jobId</code> - the job to query.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the list of all of the setup tips.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
 public&nbsp;<a href="../../../../org/apache/hadoop/mapred/TaskReport.html" title="class in org.apache.hadoop.mapred">TaskReport</a>[]&nbsp;getReduceTaskReports(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;jobId)
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 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Applications should rather use <a href="../../../../org/apache/hadoop/mapred/JobClient.html#getReduceTaskReports-org.apache.hadoop.mapred.JobID-"><code>getReduceTaskReports(JobID)</code></a></span></div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <div class="block">Display the information about a job's tasks, of a particular type and
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 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>jobId</code> - the ID of the job</dd>
 <dd><code>type</code> - the type of the task (map/reduce/setup/cleanup)</dd>
 <dd><code>state</code> - the state of the task
  (pending/running/completed/failed/killed)</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - when there is an error communicating with the master</dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if an invalid type/state is passed</dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</a>&nbsp;getClusterStatus()
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 <div class="block">Get status information about the Map-Reduce cluster.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the status information about the Map-Reduce cluster as an object
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 <dt><span class="throwsLabel">Throws:</span></dt>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred">ClusterStatus</a>&nbsp;getClusterStatus(boolean&nbsp;detailed)
                                throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Get status information about the Map-Reduce cluster.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>detailed</code> - if true then get a detailed status including the
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 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the status information about the Map-Reduce cluster as an object
          of <a href="../../../../org/apache/hadoop/mapred/ClusterStatus.html" title="class in org.apache.hadoop.mapred"><code>ClusterStatus</code></a>.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <div class="block">Get the jobs that are not completed and not failed.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>array of <a href="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred"><code>JobStatus</code></a> for the running/to-be-run jobs.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</a>[]&nbsp;getAllJobs()
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 <div class="block">Get the jobs that are submitted.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>array of <a href="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred"><code>JobStatus</code></a> for the submitted jobs.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public static&nbsp;<a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a>&nbsp;runJob(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job)
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 <div class="block">Utility that submits a job, then polls for progress until the job is
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 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>job</code> - the job configuration.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if the job fails</dd>
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 <pre>public&nbsp;boolean&nbsp;monitorAndPrintJob(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;conf,
                                   <a href="../../../../org/apache/hadoop/mapred/RunningJob.html" title="interface in org.apache.hadoop.mapred">RunningJob</a>&nbsp;job)
                            throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                                   <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
 <div class="block">Monitor a job and print status in real-time as progress is made and tasks
  fail.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - the job's configuration</dd>
 <dd><code>job</code> - the job to track</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the job succeeded</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if communication to the JobTracker fails</dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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 public&nbsp;void&nbsp;setTaskOutputFilter(org.apache.hadoop.mapred.JobClient.TaskStatusFilter&nbsp;newValue)</pre>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
 <div class="block">Sets the output filter for tasks. only those tasks are printed whose
  output matches the filter.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValue</code> - task filter.</dd>
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 <pre>public static&nbsp;org.apache.hadoop.mapred.JobClient.TaskStatusFilter&nbsp;getTaskOutputFilter(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job)</pre>
 <div class="block">Get the task output filter out of the JobConf.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>job</code> - the JobConf to examine.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the filter level.</dd>
 </dl>
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 <pre>public static&nbsp;void&nbsp;setTaskOutputFilter(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
                                        org.apache.hadoop.mapred.JobClient.TaskStatusFilter&nbsp;newValue)</pre>
 <div class="block">Modify the JobConf to set the task output filter.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>job</code> - the JobConf to modify.</dd>
 <dd><code>newValue</code> - the value to set.</dd>
 </dl>
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 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
 public&nbsp;org.apache.hadoop.mapred.JobClient.TaskStatusFilter&nbsp;getTaskOutputFilter()</pre>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
 <div class="block">Returns task output filter.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>task filter.</dd>
 </dl>
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 <pre>protected&nbsp;long&nbsp;getCounter(<a href="../../../../org/apache/hadoop/mapreduce/Counters.html" title="class in org.apache.hadoop.mapreduce">Counters</a>&nbsp;cntrs,
                           <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;counterGroupName,
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 <dl>
 <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
 <dd><code><a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html#getCounter-org.apache.hadoop.mapreduce.Counters-java.lang.String-java.lang.String-">getCounter</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/hadoop/mapreduce/tools/CLI.html" title="class in org.apache.hadoop.mapreduce.tools">CLI</a></code></dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;int&nbsp;getDefaultMaps()
                    throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Get status information about the max available Maps in the cluster.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the max available Maps in the cluster</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <div class="block">Get status information about the max available Reduces in the cluster.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the max available Reduces in the cluster</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <h4>getSystemDir</h4>
 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a>&nbsp;getSystemDir()</pre>
 <div class="block">Grab the jobtracker system directory path where job-specific files are to be placed.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the system directory where job-specific files are to be placed.</dd>
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 <pre>public static&nbsp;boolean&nbsp;isJobDirValid(<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a>&nbsp;jobDirPath,
                                     <a href="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</a>&nbsp;fs)
                              throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Checks if the job directory is clean and has all the required components
  for (re) starting the job</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a>&nbsp;getStagingAreaDir()
                        throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Fetch the staging area directory for the application</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>path to staging area directory</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a>[]&nbsp;getRootQueues()
                              throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Returns an array of queue information objects about root level queues
  configured</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the array of root level JobQueueInfo objects</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a>[]&nbsp;getChildQueues(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;queueName)
                               throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Returns an array of queue information objects about immediate children
  of queue queueName.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>queueName</code> - </dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the array of immediate children JobQueueInfo objects</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a>[]&nbsp;getQueues()
                          throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Return an array of queue information objects about all the Job Queues
  configured.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Array of JobQueueInfo objects</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
 </dl>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/JobStatus.html" title="class in org.apache.hadoop.mapred">JobStatus</a>[]&nbsp;getJobsFromQueue(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;queueName)
                              throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Gets all the jobs which were added to particular Job Queue</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>queueName</code> - name of the Job Queue</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Array of jobs present in the job queue</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/mapred/JobQueueInfo.html" title="class in org.apache.hadoop.mapred">JobQueueInfo</a>&nbsp;getQueueInfo(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;queueName)
                           throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Gets the queue information associated to a particular Job Queue</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>queueName</code> - name of the job queue.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Queue information associated to particular queue.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public&nbsp;org.apache.hadoop.mapred.QueueAclsInfo[]&nbsp;getQueueAclsForCurrentUser()
                                                                     throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Gets the Queue ACLs for current user</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>array of QueueAclsInfo object for current user.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <h4>getDelegationToken</h4>
 <pre>public&nbsp;<a href="../../../../org/apache/hadoop/security/token/Token.html" title="class in org.apache.hadoop.security.token">Token</a>&lt;org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier&gt;&nbsp;getDelegationToken(<a href="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;renewer)
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 <div class="block">Get a delegation token for the user from the JobTracker.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>renewer</code> - the user who can renew the token</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the new token</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
 </dl>
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 <pre>public&nbsp;long&nbsp;renewDelegationToken(<a href="../../../../org/apache/hadoop/security/token/Token.html" title="class in org.apache.hadoop.security.token">Token</a>&lt;org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier&gt;&nbsp;token)
                           throws org.apache.hadoop.security.token.SecretManager.InvalidToken,
                                  <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                                  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/hadoop/security/token/Token.html#renew-org.apache.hadoop.conf.Configuration-"><code>Token.renew(org.apache.hadoop.conf.Configuration)</code></a> instead</span></div>
 <div class="block">Renew a delegation token</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>token</code> - the token to renew</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the renewal went well</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.security.token.SecretManager.InvalidToken</code></dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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 <pre>public&nbsp;void&nbsp;cancelDelegationToken(<a href="../../../../org/apache/hadoop/security/token/Token.html" title="class in org.apache.hadoop.security.token">Token</a>&lt;org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier&gt;&nbsp;token)
                            throws org.apache.hadoop.security.token.SecretManager.InvalidToken,
                                   <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                                   <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/hadoop/security/token/Token.html#cancel-org.apache.hadoop.conf.Configuration-"><code>Token.cancel(org.apache.hadoop.conf.Configuration)</code></a> instead</span></div>
 <div class="block">Cancel a delegation token from the JobTracker</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>token</code> - the token to cancel</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
 <dd><code>org.apache.hadoop.security.token.SecretManager.InvalidToken</code></dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
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