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apache / hadoop-site / 952d547359cafef280f0a0324055741b2ed55be1 / . / content / docs / r3.3.1 / hadoop-yarn / hadoop-yarn-server / hadoop-yarn-server-resourcemanager / apidocs / org / apache / hadoop / yarn / server / resourcemanager / scheduler / fair / FSSchedulerNode.html
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<div class="subTitle">org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair</div>
<h2 title="Class FSSchedulerNode" class="title">Class FSSchedulerNode</h2>
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<li><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode</a></li>
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<pre>@InterfaceAudience.Private
@InterfaceStability.Unstable
public class <span class="typeNameLabel">FSSchedulerNode</span>
extends <a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerNode</a></pre>
<div class="block">Fair Scheduler specific node features.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSSchedulerNode.html#FSSchedulerNode-org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode-boolean-">FSSchedulerNode</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/rmnode/RMNode.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.rmnode">RMNode</a>&nbsp;node,
boolean&nbsp;usePortForNodeName)</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/server/resourcemanager/scheduler/fair/FSSchedulerNode.html#allocateContainer-org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer-boolean-">allocateContainer</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/rmcontainer/RMContainer.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.rmcontainer">RMContainer</a>&nbsp;rmContainer,
boolean&nbsp;launchedOnNode)</code>
<div class="block">The Scheduler has allocated containers on this node to the given
application.</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSSchedulerNode.html#releaseContainer-org.apache.hadoop.yarn.api.records.ContainerId-boolean-">releaseContainer</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId,
boolean&nbsp;releasedByNode)</code>
<div class="block">Release an allocated container on this node.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSSchedulerNode.html#reserveResource-org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt-org.apache.hadoop.yarn.server.scheduler.SchedulerRequestKey-org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer-">reserveResource</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerApplicationAttempt.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerApplicationAttempt</a>&nbsp;application,
org.apache.hadoop.yarn.server.scheduler.SchedulerRequestKey&nbsp;schedulerKey,
<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/rmcontainer/RMContainer.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.rmcontainer">RMContainer</a>&nbsp;container)</code>
<div class="block">Reserve container for the attempt on this node.</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSSchedulerNode.html#unreserveResource-org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt-">unreserveResource</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerApplicationAttempt.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerApplicationAttempt</a>&nbsp;application)</code>
<div class="block">Unreserve resources on this node.</div>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.yarn.server.resourcemanager.scheduler.<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerNode</a></h3>
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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#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#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>FSSchedulerNode</h4>
<pre>public&nbsp;FSSchedulerNode(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/rmnode/RMNode.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.rmnode">RMNode</a>&nbsp;node,
boolean&nbsp;usePortForNodeName)</pre>
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<h4>reserveResource</h4>
<pre>public&nbsp;void&nbsp;reserveResource(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerApplicationAttempt.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerApplicationAttempt</a>&nbsp;application,
org.apache.hadoop.yarn.server.scheduler.SchedulerRequestKey&nbsp;schedulerKey,
<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/rmcontainer/RMContainer.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.rmcontainer">RMContainer</a>&nbsp;container)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html#reserveResource-org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt-org.apache.hadoop.yarn.server.scheduler.SchedulerRequestKey-org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer-">SchedulerNode</a></code></span></div>
<div class="block">Reserve container for the attempt on this node.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html#reserveResource-org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt-org.apache.hadoop.yarn.server.scheduler.SchedulerRequestKey-org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer-">reserveResource</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>application</code> - Application attempt asking for the reservation.</dd>
<dd><code>schedulerKey</code> - Priority of the reservation.</dd>
<dd><code>container</code> - Container reserving resources for.</dd>
</dl>
</li>
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<h4>unreserveResource</h4>
<pre>public&nbsp;void&nbsp;unreserveResource(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerApplicationAttempt.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerApplicationAttempt</a>&nbsp;application)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html#unreserveResource-org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt-">SchedulerNode</a></code></span></div>
<div class="block">Unreserve resources on this node.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html#unreserveResource-org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt-">unreserveResource</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>application</code> - Application attempt that had done the reservation.</dd>
</dl>
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<h4>allocateContainer</h4>
<pre>protected&nbsp;void&nbsp;allocateContainer(<a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/rmcontainer/RMContainer.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.rmcontainer">RMContainer</a>&nbsp;rmContainer,
boolean&nbsp;launchedOnNode)</pre>
<div class="block">The Scheduler has allocated containers on this node to the given
application.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html#allocateContainer-org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer-boolean-">allocateContainer</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rmContainer</code> - Allocated container</dd>
<dd><code>launchedOnNode</code> - True if the container has been launched</dd>
</dl>
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<h4>releaseContainer</h4>
<pre>public&nbsp;void&nbsp;releaseContainer(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId,
boolean&nbsp;releasedByNode)</pre>
<div class="block">Release an allocated container on this node.
It also releases from the reservation list to trigger preemption
allocations.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html#releaseContainer-org.apache.hadoop.yarn.api.records.ContainerId-boolean-">releaseContainer</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerNode.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.scheduler">SchedulerNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerId</code> - ID of container to be released.</dd>
<dd><code>releasedByNode</code> - whether the release originates from a node update.</dd>
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