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<div class="subTitle">org.apache.hadoop.yarn.util</div>
<h2 title="Class AbstractLivelinessMonitor" class="title">Class AbstractLivelinessMonitor&lt;O&gt;</h2>
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<li>org.apache.hadoop.yarn.util.AbstractLivelinessMonitor&lt;O&gt;</li>
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<pre>@InterfaceAudience.Public
@InterfaceStability.Evolving
public abstract class <span class="typeNameLabel">AbstractLivelinessMonitor&lt;O&gt;</span>
extends <a href="../../../../../org/apache/hadoop/service/AbstractService.html" title="class in org.apache.hadoop.service">AbstractService</a></pre>
<div class="block">A simple liveliness monitor with which clients can register, trust the
component to monitor liveliness, get a call-back on expiry and then finally
unregister.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html#DEFAULT_EXPIRE">DEFAULT_EXPIRE</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html#AbstractLivelinessMonitor-java.lang.String-">AbstractLivelinessMonitor</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;name)</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html#AbstractLivelinessMonitor-java.lang.String-org.apache.hadoop.yarn.util.Clock-">AbstractLivelinessMonitor</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;name,
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<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html#expire-O-">expire</a></span>(<a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html" title="type parameter in AbstractLivelinessMonitor">O</a>&nbsp;ob)</code>&nbsp;</td>
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<td class="colFirst"><code>protected long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html#getExpireInterval-O-">getExpireInterval</a></span>(<a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html" title="type parameter in AbstractLivelinessMonitor">O</a>&nbsp;o)</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/yarn/util/AbstractLivelinessMonitor.html#receivedPing-O-">receivedPing</a></span>(<a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html" title="type parameter in AbstractLivelinessMonitor">O</a>&nbsp;ob)</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/yarn/util/AbstractLivelinessMonitor.html#register-O-">register</a></span>(<a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html" title="type parameter in AbstractLivelinessMonitor">O</a>&nbsp;ob)</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/yarn/util/AbstractLivelinessMonitor.html#register-O-long-">register</a></span>(<a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html" title="type parameter in AbstractLivelinessMonitor">O</a>&nbsp;ob,
long&nbsp;expireTime)</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/yarn/util/AbstractLivelinessMonitor.html#resetTimer--">resetTimer</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/yarn/util/AbstractLivelinessMonitor.html#serviceStart--">serviceStart</a></span>()</code>
<div class="block">Actions called during the INITED to STARTED transition.</div>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html#serviceStop--">serviceStop</a></span>()</code>
<div class="block">Actions called during the transition to the STOPPED state.</div>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html#setExpireInterval-int-">setExpireInterval</a></span>(int&nbsp;expireInterval)</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/yarn/util/AbstractLivelinessMonitor.html#setMonitorInterval-long-">setMonitorInterval</a></span>(long&nbsp;monitorInterval)</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/yarn/util/AbstractLivelinessMonitor.html#setResetTimeOnStart-boolean-">setResetTimeOnStart</a></span>(boolean&nbsp;resetTimeOnStart)</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/yarn/util/AbstractLivelinessMonitor.html#unregister-O-">unregister</a></span>(<a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html" title="type parameter in AbstractLivelinessMonitor">O</a>&nbsp;ob)</code>&nbsp;</td>
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<pre>public static final&nbsp;int DEFAULT_EXPIRE</pre>
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<dd><a href="../../../../../constant-values.html#org.apache.hadoop.yarn.util.AbstractLivelinessMonitor.DEFAULT_EXPIRE">Constant Field Values</a></dd>
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<pre>public&nbsp;AbstractLivelinessMonitor(<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;name,
<a href="../../../../../org/apache/hadoop/yarn/util/Clock.html" title="interface in org.apache.hadoop.yarn.util">Clock</a>&nbsp;clock)</pre>
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<pre>public&nbsp;AbstractLivelinessMonitor(<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;name)</pre>
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<pre>protected&nbsp;void&nbsp;serviceStart()
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<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/hadoop/service/AbstractService.html#serviceStart--">AbstractService</a></code></span></div>
<div class="block">Actions called during the INITED to STARTED transition.
This method will only ever be called once during the lifecycle of
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in <a href="../../../../../org/apache/hadoop/service/AbstractService.html#start--"><code>AbstractService.start()</code></a> prevents re-entrancy.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/hadoop/service/AbstractService.html#serviceStart--">serviceStart</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/service/AbstractService.html" title="class in org.apache.hadoop.service">AbstractService</a></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> - if needed -these will be caught,
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<pre>protected&nbsp;void&nbsp;serviceStop()
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<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/hadoop/service/AbstractService.html#serviceStop--">AbstractService</a></code></span></div>
<div class="block">Actions called during the transition to the STOPPED state.
This method will only ever be called once during the lifecycle of
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Implementations do not need to be synchronized as the logic
in <a href="../../../../../org/apache/hadoop/service/AbstractService.html#stop--"><code>AbstractService.stop()</code></a> prevents re-entrancy.
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<dd><code><a href="../../../../../org/apache/hadoop/service/AbstractService.html#serviceStop--">serviceStop</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/service/AbstractService.html" title="class in org.apache.hadoop.service">AbstractService</a></code></dd>
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<pre>protected abstract&nbsp;void&nbsp;expire(<a href="../../../../../org/apache/hadoop/yarn/util/AbstractLivelinessMonitor.html" title="type parameter in AbstractLivelinessMonitor">O</a>&nbsp;ob)</pre>
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