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<div class="subTitle">org.apache.hadoop.mapreduce.jobhistory</div>
<h2 title="Class JobHistoryEventHandler" class="title">Class JobHistoryEventHandler</h2>
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<ul class="inheritance">
<li>org.apache.hadoop.service.AbstractService</li>
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<ul class="inheritance">
<li>org.apache.hadoop.mapreduce.jobhistory.JobHistoryEventHandler</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a>, <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>, org.apache.hadoop.service.Service, org.apache.hadoop.yarn.event.EventHandler&lt;<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&gt;</dd>
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<pre>public class <span class="typeNameLabel">JobHistoryEventHandler</span>
extends org.apache.hadoop.service.AbstractService
implements org.apache.hadoop.yarn.event.EventHandler&lt;<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&gt;</pre>
<div class="block">The job history events get routed to this class. This class writes the Job
history events to the DFS directly into a staging dir and then moved to a
done-dir. JobHistory implementation is in this package to access package
private classes.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<tr class="altColor">
<td class="colFirst"><code>protected class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.MetaInfo.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEventHandler.MetaInfo</a></span></code>&nbsp;</td>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.hadoop.service.Service</h3>
<code>org.apache.hadoop.service.Service.STATE</code></li>
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<td class="colFirst"><code>protected org.apache.hadoop.yarn.event.AsyncDispatcher</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#atsEventDispatcher">atsEventDispatcher</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Thread.html?is-external=true" title="class or interface in java.lang">Thread</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#eventHandlingThread">eventHandlingThread</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/BlockingQueue.html?is-external=true" title="class or interface in java.util.concurrent">BlockingQueue</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#eventQueue">eventQueue</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;org.apache.hadoop.mapreduce.v2.api.records.JobId,<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.MetaInfo.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEventHandler.MetaInfo</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#fileMap">fileMap</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#forceJobCompletion">forceJobCompletion</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#handleTimelineEvent">handleTimelineEvent</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected org.apache.hadoop.yarn.client.api.TimelineClient</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#timelineClient">timelineClient</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected org.apache.hadoop.yarn.client.api.TimelineV2Client</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#timelineV2Client">timelineV2Client</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#JobHistoryEventHandler-org.apache.hadoop.mapreduce.v2.app.AppContext-int-">JobHistoryEventHandler</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/v2/app/AppContext.html" title="interface in org.apache.hadoop.mapreduce.v2.app">AppContext</a>&nbsp;context,
int&nbsp;startCount)</code>&nbsp;</td>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#closeEventWriter-org.apache.hadoop.mapreduce.v2.api.records.JobId-">closeEventWriter</a></span>(org.apache.hadoop.mapreduce.v2.api.records.JobId&nbsp;jobId)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#closeWriter-org.apache.hadoop.mapreduce.v2.api.records.JobId-">closeWriter</a></span>(org.apache.hadoop.mapreduce.v2.api.records.JobId&nbsp;id)</code>
<div class="block">Close the event writer for this id</div>
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<td class="colFirst"><code>protected org.apache.hadoop.yarn.event.AsyncDispatcher</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#createDispatcher--">createDispatcher</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>protected org.apache.hadoop.mapreduce.jobhistory.EventWriter</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#createEventWriter-org.apache.hadoop.fs.Path-">createEventWriter</a></span>(org.apache.hadoop.fs.Path&nbsp;historyFilePath)</code>&nbsp;</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#handle-org.apache.hadoop.mapreduce.jobhistory.JobHistoryEvent-">handle</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&nbsp;event)</code>&nbsp;</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#handleEvent-org.apache.hadoop.mapreduce.jobhistory.JobHistoryEvent-">handleEvent</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&nbsp;event)</code>&nbsp;</td>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#moveTmpToDone-org.apache.hadoop.fs.Path-">moveTmpToDone</a></span>(org.apache.hadoop.fs.Path&nbsp;tmpPath)</code>&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#moveToDoneNow-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">moveToDoneNow</a></span>(org.apache.hadoop.fs.Path&nbsp;fromPath,
org.apache.hadoop.fs.Path&nbsp;toPath)</code>&nbsp;</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#processDoneFiles-org.apache.hadoop.mapreduce.v2.api.records.JobId-">processDoneFiles</a></span>(org.apache.hadoop.mapreduce.v2.api.records.JobId&nbsp;jobId)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#processEventForJobSummary-org.apache.hadoop.mapreduce.jobhistory.HistoryEvent-org.apache.hadoop.mapreduce.jobhistory.JobSummary-org.apache.hadoop.mapreduce.v2.api.records.JobId-">processEventForJobSummary</a></span>(org.apache.hadoop.mapreduce.jobhistory.HistoryEvent&nbsp;event,
<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobSummary.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobSummary</a>&nbsp;summary,
org.apache.hadoop.mapreduce.v2.api.records.JobId&nbsp;jobId)</code>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#serviceInit-org.apache.hadoop.conf.Configuration-">serviceInit</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
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<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#serviceStart--">serviceStart</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#serviceStop--">serviceStop</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#setForcejobCompletion-boolean-">setForcejobCompletion</a></span>(boolean&nbsp;forceJobCompletion)</code>&nbsp;</td>
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<tr id="i14" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.html#setupEventWriter-org.apache.hadoop.mapreduce.v2.api.records.JobId-org.apache.hadoop.mapreduce.jobhistory.AMStartedEvent-">setupEventWriter</a></span>(org.apache.hadoop.mapreduce.v2.api.records.JobId&nbsp;jobId,
org.apache.hadoop.mapreduce.jobhistory.AMStartedEvent&nbsp;amStartedEvent)</code>
<div class="block">Create an event writer for the Job represented by the jobID.</div>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.service.AbstractService</h3>
<code>close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop</code></li>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>eventQueue</h4>
<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/BlockingQueue.html?is-external=true" title="class or interface in java.util.concurrent">BlockingQueue</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&gt; eventQueue</pre>
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<pre>protected&nbsp;org.apache.hadoop.yarn.event.AsyncDispatcher atsEventDispatcher</pre>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Thread.html?is-external=true" title="class or interface in java.lang">Thread</a> eventHandlingThread</pre>
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<pre>protected static final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;org.apache.hadoop.mapreduce.v2.api.records.JobId,<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.MetaInfo.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEventHandler.MetaInfo</a>&gt; fileMap</pre>
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<pre>protected volatile&nbsp;boolean forceJobCompletion</pre>
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<pre>protected&nbsp;org.apache.hadoop.yarn.client.api.TimelineClient timelineClient</pre>
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<pre>protected&nbsp;org.apache.hadoop.yarn.client.api.TimelineV2Client timelineV2Client</pre>
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<pre>public&nbsp;JobHistoryEventHandler(<a href="../../../../../org/apache/hadoop/mapreduce/v2/app/AppContext.html" title="interface in org.apache.hadoop.mapreduce.v2.app">AppContext</a>&nbsp;context,
int&nbsp;startCount)</pre>
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<pre>protected&nbsp;void&nbsp;serviceInit(org.apache.hadoop.conf.Configuration&nbsp;conf)
throws <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></pre>
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<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code>serviceStart</code>&nbsp;in class&nbsp;<code>org.apache.hadoop.service.AbstractService</code></dd>
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<pre>protected&nbsp;void&nbsp;serviceStop()
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<dd><code>serviceStop</code>&nbsp;in class&nbsp;<code>org.apache.hadoop.service.AbstractService</code></dd>
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<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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<pre>protected&nbsp;org.apache.hadoop.mapreduce.jobhistory.EventWriter&nbsp;createEventWriter(org.apache.hadoop.fs.Path&nbsp;historyFilePath)
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<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>protected&nbsp;void&nbsp;setupEventWriter(org.apache.hadoop.mapreduce.v2.api.records.JobId&nbsp;jobId,
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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">Create an event writer for the Job represented by the jobID.
Writes out the job configuration to the log directory.
This should be the first call to history for a job</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>jobId</code> - the jobId.</dd>
<dd><code>amStartedEvent</code> - </dd>
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<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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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">Close the event writer for this id</div>
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<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;void&nbsp;handle(<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&nbsp;event)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>handle</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.yarn.event.EventHandler&lt;<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&gt;</code></dd>
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<pre>@InterfaceAudience.Private
public&nbsp;void&nbsp;handleEvent(<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobHistoryEvent.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobHistoryEvent</a>&nbsp;event)</pre>
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<pre>public&nbsp;void&nbsp;processEventForJobSummary(org.apache.hadoop.mapreduce.jobhistory.HistoryEvent&nbsp;event,
<a href="../../../../../org/apache/hadoop/mapreduce/jobhistory/JobSummary.html" title="class in org.apache.hadoop.mapreduce.jobhistory">JobSummary</a>&nbsp;summary,
org.apache.hadoop.mapreduce.v2.api.records.JobId&nbsp;jobId)</pre>
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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>
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<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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<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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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>
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<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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