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apache / hadoop-site / 952d547359cafef280f0a0324055741b2ed55be1 / . / content / docs / r3.3.1 / hadoop-yarn / hadoop-yarn-server / hadoop-yarn-server-nodemanager / apidocs / org / apache / hadoop / yarn / server / nodemanager / containermanager / linux / resources / ResourceHandler.html
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<div class="subTitle">org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources</div>
<h2 title="Interface ResourceHandler" class="title">Interface ResourceHandler</h2>
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<dt>All Known Subinterfaces:</dt>
<dd><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/CpuResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">CpuResourceHandler</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/DiskResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">DiskResourceHandler</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/MemoryResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">MemoryResourceHandler</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/OutboundBandwidthResourceHandler.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">OutboundBandwidthResourceHandler</a></dd>
</dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/CGroupsBlkioResourceHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">CGroupsBlkioResourceHandlerImpl</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/CGroupsCpuResourceHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">CGroupsCpuResourceHandlerImpl</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/CGroupsMemoryResourceHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">CGroupsMemoryResourceHandlerImpl</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/deviceframework/DeviceResourceHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.deviceframework">DeviceResourceHandlerImpl</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/fpga/FpgaResourceHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.fpga">FpgaResourceHandlerImpl</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/gpu/GpuResourceHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.gpu">GpuResourceHandlerImpl</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/NetworkPacketTaggingHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">NetworkPacketTaggingHandlerImpl</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/numa/NumaResourceHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.numa">NumaResourceHandlerImpl</a>, <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">ResourceHandlerChain</a>, <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/TrafficControlBandwidthHandlerImpl.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">TrafficControlBandwidthHandlerImpl</a></dd>
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<pre>@InterfaceAudience.Private
@InterfaceStability.Unstable
public interface <span class="typeNameLabel">ResourceHandler</span></pre>
<div class="block">Handler interface for resource subsystems' isolation and enforcement. e.g cpu, memory, network, disks etc</div>
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<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><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html#bootstrap-org.apache.hadoop.conf.Configuration-">bootstrap</a></span>(org.apache.hadoop.conf.Configuration&nbsp;configuration)</code>
<div class="block">Bootstrap resource susbsystem.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html#postComplete-org.apache.hadoop.yarn.api.records.ContainerId-">postComplete</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</code>
<div class="block">Perform any tasks necessary after container completion.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html#preStart-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">preStart</a></span>(<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/container/Container.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.container">Container</a>&nbsp;container)</code>
<div class="block">Prepare a resource environment for container launch</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html#reacquireContainer-org.apache.hadoop.yarn.api.records.ContainerId-">reacquireContainer</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</code>
<div class="block">Require state for container that was already launched</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html#teardown--">teardown</a></span>()</code>
<div class="block">Teardown environment for resource subsystem if requested.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandler.html#updateContainer-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">updateContainer</a></span>(<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/container/Container.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.container">Container</a>&nbsp;container)</code>
<div class="block">Update state for container that was already launched</div>
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<h3>Method Detail</h3>
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<h4>bootstrap</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;&nbsp;bootstrap(org.apache.hadoop.conf.Configuration&nbsp;configuration)
throws <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></pre>
<div class="block">Bootstrap resource susbsystem.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>(possibly empty) list of operations that require elevated
privileges</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></code></dd>
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<h4>preStart</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;&nbsp;preStart(<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/container/Container.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.container">Container</a>&nbsp;container)
throws <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></pre>
<div class="block">Prepare a resource environment for container launch</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>container</code> - Container being launched</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>(possibly empty) list of operations that require elevated
privileges e.g a) create a custom cgroup b) add pid for container to tasks
file for a cgroup.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></code></dd>
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<h4>reacquireContainer</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;&nbsp;reacquireContainer(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)
throws <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></pre>
<div class="block">Require state for container that was already launched</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerId</code> - id of the container being reacquired.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>(possibly empty) list of operations that require elevated
privileges</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></code></dd>
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<a name="updateContainer-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">
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<h4>updateContainer</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;&nbsp;updateContainer(<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/container/Container.html" title="interface in org.apache.hadoop.yarn.server.nodemanager.containermanager.container">Container</a>&nbsp;container)
throws <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></pre>
<div class="block">Update state for container that was already launched</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>container</code> - the container being updated.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>(possibly empty) list of operations that require elevated
privileges</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></code></dd>
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<h4>postComplete</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;&nbsp;postComplete(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)
throws <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></pre>
<div class="block">Perform any tasks necessary after container completion.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerId</code> - of the container that was completed.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>(possibly empty) list of operations that require elevated
privileges</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></code></dd>
</dl>
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<h4>teardown</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperation.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged">PrivilegedOperation</a>&gt;&nbsp;teardown()
throws <a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></pre>
<div class="block">Teardown environment for resource subsystem if requested. This method
needs to be used with care since it could impact running containers.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>(possibly empty) list of operations that require elevated
privileges</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources">ResourceHandlerException</a></code></dd>
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