content/docs/r3.3.1/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/apidocs/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html - hadoop-site - Git at Google

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 <div class="subTitle">org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin</div>
 <h2 title="Interface ResourcePlugin" class="title">Interface ResourcePlugin</h2>
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 <dt>All Known Implementing Classes:</dt>
 <dd><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/deviceframework/DevicePluginAdapter.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.deviceframework">DevicePluginAdapter</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/FpgaResourcePlugin.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.fpga">FpgaResourcePlugin</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/gpu/GpuResourcePlugin.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.gpu">GpuResourcePlugin</a></dd>
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 <br>
 <pre>public interface <span class="typeNameLabel">ResourcePlugin</span></pre>
 <div class="block"><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin"><code>ResourcePlugin</code></a> is an interface for node manager to easier support
  discovery/manage/isolation for new resource types.

  <p>
  It has two major part: <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#createResourceHandler-org.apache.hadoop.yarn.server.nodemanager.Context-org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsHandler-org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor-"><code>createResourceHandler(Context,
  CGroupsHandler, PrivilegedOperationExecutor)</code></a> and
  <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#getNodeResourceHandlerInstance--"><code>getNodeResourceHandlerInstance()</code></a>, see javadocs below
  for more details.
  </p></div>
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 <h3>Method Summary</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
 <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/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#cleanup--">cleanup</a></span>()</code>
 <div class="block">Do cleanup of the plugin, this will be invoked when
  <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/NodeManager.html" title="class in org.apache.hadoop.yarn.server.nodemanager"><code>NodeManager</code></a> stops</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandler</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#createResourceHandler-org.apache.hadoop.yarn.server.nodemanager.Context-org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsHandler-org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor-">createResourceHandler</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/Context.html" title="interface in org.apache.hadoop.yarn.server.nodemanager">Context</a>&nbsp;nmContext,
                      <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/CGroupsHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">CGroupsHandler</a>&nbsp;cGroupsHandler,
                      <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperationExecutor.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperationExecutor</a>&nbsp;privilegedOperationExecutor)</code>
 <div class="block">Plugin needs to return <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources"><code>ResourceHandler</code></a> when any special isolation
  required for the resource type.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/DockerCommandPlugin.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin">DockerCommandPlugin</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#getDockerCommandPluginInstance--">getDockerCommandPluginInstance</a></span>()</code>
 <div class="block">Plugin need to get <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/DockerCommandPlugin.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin"><code>DockerCommandPlugin</code></a>.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/webapp/dao/NMResourceInfo.html" title="class in org.apache.hadoop.yarn.server.nodemanager.webapp.dao">NMResourceInfo</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#getNMResourceInfo--">getNMResourceInfo</a></span>()</code>
 <div class="block">Get resource information from this plugin.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/NodeResourceUpdaterPlugin.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin">NodeResourceUpdaterPlugin</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#getNodeResourceHandlerInstance--">getNodeResourceHandlerInstance</a></span>()</code>
 <div class="block">Plugin needs to return <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/NodeResourceUpdaterPlugin.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin"><code>NodeResourceUpdaterPlugin</code></a> when any discovery
  mechanism required for the resource type.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/ResourcePlugin.html#initialize-org.apache.hadoop.yarn.server.nodemanager.Context-">initialize</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/Context.html" title="interface in org.apache.hadoop.yarn.server.nodemanager">Context</a>&nbsp;context)</code>
 <div class="block">Initialize the plugin, this will be invoked during NM startup.</div>
 </td>
 </tr>
 </table>
 </li>
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 <h3>Method Detail</h3>
 <a name="initialize-org.apache.hadoop.yarn.server.nodemanager.Context-">
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 <h4>initialize</h4>
 <pre>void&nbsp;initialize(<a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/Context.html" title="interface in org.apache.hadoop.yarn.server.nodemanager">Context</a>&nbsp;context)
          throws org.apache.hadoop.yarn.exceptions.YarnException</pre>
 <div class="block">Initialize the plugin, this will be invoked during NM startup.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>context</code> - NM Context</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.yarn.exceptions.YarnException</code> - when any issue occurs</dd>
 </dl>
 </li>
 </ul>
 <a name="createResourceHandler-org.apache.hadoop.yarn.server.nodemanager.Context-org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsHandler-org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor-">
 <!--   -->
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 <h4>createResourceHandler</h4>
 <pre><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandler</a>&nbsp;createResourceHandler(<a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/Context.html" title="interface in org.apache.hadoop.yarn.server.nodemanager">Context</a>&nbsp;nmContext,
                                       <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/CGroupsHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">CGroupsHandler</a>&nbsp;cGroupsHandler,
                                       <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperationExecutor.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperationExecutor</a>&nbsp;privilegedOperationExecutor)</pre>
 <div class="block">Plugin needs to return <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources"><code>ResourceHandler</code></a> when any special isolation
  required for the resource type. This will be added to
  <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerChain.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources"><code>ResourceHandlerChain</code></a> during NodeManager startup. When no special
  isolation need, return null.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>nmContext</code> - NodeManager context.</dd>
 <dd><code>cGroupsHandler</code> - CGroupsHandler</dd>
 <dd><code>privilegedOperationExecutor</code> - Privileged Operation Executor.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>ResourceHandler</dd>
 </dl>
 </li>
 </ul>
 <a name="getNodeResourceHandlerInstance--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getNodeResourceHandlerInstance</h4>
 <pre><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/NodeResourceUpdaterPlugin.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin">NodeResourceUpdaterPlugin</a>&nbsp;getNodeResourceHandlerInstance()</pre>
 <div class="block">Plugin needs to return <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/NodeResourceUpdaterPlugin.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin"><code>NodeResourceUpdaterPlugin</code></a> when any discovery
  mechanism required for the resource type. For example, if we want to set
  resource-value during NM registration or send update during NM-RM heartbeat
  We can implement a <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/NodeResourceUpdaterPlugin.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin"><code>NodeResourceUpdaterPlugin</code></a> and update fields of
  <code>NodeHeartbeatRequest</code>
  or <code>RegisterNodeManagerRequest</code>

  This will be invoked during every node status update or node registration,
  please avoid creating new instance every time.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>NodeResourceUpdaterPlugin, could be null when no discovery needed.</dd>
 </dl>
 </li>
 </ul>
 <a name="cleanup--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>cleanup</h4>
 <pre>void&nbsp;cleanup()
       throws org.apache.hadoop.yarn.exceptions.YarnException</pre>
 <div class="block">Do cleanup of the plugin, this will be invoked when
  <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/NodeManager.html" title="class in org.apache.hadoop.yarn.server.nodemanager"><code>NodeManager</code></a> stops</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.yarn.exceptions.YarnException</code> - if any issue occurs</dd>
 </dl>
 </li>
 </ul>
 <a name="getDockerCommandPluginInstance--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getDockerCommandPluginInstance</h4>
 <pre><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/DockerCommandPlugin.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin">DockerCommandPlugin</a>&nbsp;getDockerCommandPluginInstance()</pre>
 <div class="block">Plugin need to get <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/DockerCommandPlugin.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin"><code>DockerCommandPlugin</code></a>. This will be invoked by
  <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime"><code>DockerLinuxContainerRuntime</code></a> when execute docker commands such as
  run/stop/pull, etc.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>DockerCommandPlugin instance. return null if plugin doesn't
          have requirement to update docker command.</dd>
 </dl>
 </li>
 </ul>
 <a name="getNMResourceInfo--">
 <!--   -->
 </a>
 <ul class="blockListLast">
 <li class="blockList">
 <h4>getNMResourceInfo</h4>
 <pre><a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/webapp/dao/NMResourceInfo.html" title="class in org.apache.hadoop.yarn.server.nodemanager.webapp.dao">NMResourceInfo</a>&nbsp;getNMResourceInfo()
                           throws org.apache.hadoop.yarn.exceptions.YarnException</pre>
 <div class="block">Get resource information from this plugin.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>NMResourceInfo, an example is
  <a href="../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/webapp/dao/gpu/GpuDeviceInformation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.webapp.dao.gpu"><code>GpuDeviceInformation</code></a></dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.yarn.exceptions.YarnException</code> - when any issue occurs</dd>
 </dl>
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