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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 / ContainerExecutor.html
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<div class="subTitle">org.apache.hadoop.yarn.server.nodemanager</div>
<h2 title="Class ContainerExecutor" class="title">Class ContainerExecutor</h2>
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<li>org.apache.hadoop.yarn.server.nodemanager.ContainerExecutor</li>
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<dt>All Implemented Interfaces:</dt>
<dd>org.apache.hadoop.conf.Configurable</dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/DefaultContainerExecutor.html" title="class in org.apache.hadoop.yarn.server.nodemanager">DefaultContainerExecutor</a>, <a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/LinuxContainerExecutor.html" title="class in org.apache.hadoop.yarn.server.nodemanager">LinuxContainerExecutor</a></dd>
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<pre>public abstract class <span class="typeNameLabel">ContainerExecutor</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements org.apache.hadoop.conf.Configurable</pre>
<div class="block">This class is abstraction of the mechanism used to launch a container on the
underlying OS. All executor implementations must extend ContainerExecutor.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.DelayedProcessKiller.html" title="class in org.apache.hadoop.yarn.server.nodemanager">ContainerExecutor.DelayedProcessKiller</a></span></code>
<div class="block">This class will signal a target container after a specified delay.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.ExitCode.html" title="enum in org.apache.hadoop.yarn.server.nodemanager">ContainerExecutor.ExitCode</a></span></code>
<div class="block">The container exit code.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.Signal.html" title="enum in org.apache.hadoop.yarn.server.nodemanager">ContainerExecutor.Signal</a></span></code>
<div class="block">The constants for the signals.</div>
</td>
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<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#DIRECTORY_CONTENTS">DIRECTORY_CONTENTS</a></span></code>
<div class="block">The relative path to which debug information will be written.</div>
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<td class="colFirst"><code>static org.apache.hadoop.fs.permission.FsPermission</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#TASK_LAUNCH_SCRIPT_PERMISSION">TASK_LAUNCH_SCRIPT_PERMISSION</a></span></code>
<div class="block">The permissions to use when creating the launch script.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#TOKEN_FILE_NAME_FMT">TOKEN_FILE_NAME_FMT</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#WILDCARD">WILDCARD</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#ContainerExecutor--">ContainerExecutor</a></span>()</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<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/ContainerExecutor.html#activateContainer-org.apache.hadoop.yarn.api.records.ContainerId-org.apache.hadoop.fs.Path-">activateContainer</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId,
org.apache.hadoop.fs.Path&nbsp;pidFilePath)</code>
<div class="block">Mark the container as active.</div>
</td>
</tr>
<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/nodemanager/ContainerExecutor.html#cleanupBeforeRelaunch-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">cleanupBeforeRelaunch</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">Perform any cleanup before the next launch of the container.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#deactivateContainer-org.apache.hadoop.yarn.api.records.ContainerId-">deactivateContainer</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</code>
<div class="block">Mark the container as inactive.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#deleteAsUser-org.apache.hadoop.yarn.server.nodemanager.executor.DeletionAsUserContext-">deleteAsUser</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/DeletionAsUserContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">DeletionAsUserContext</a>&nbsp;ctx)</code>
<div class="block">Delete specified directories as a given user.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>abstract org.apache.hadoop.hdfs.protocol.datatransfer.IOStreamPair</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#execContainer-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerExecContext-">execContainer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerExecContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerExecContext</a>&nbsp;ctx)</code>
<div class="block">Perform interactive docker command into running container.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getConf--">getConf</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getExposedPorts-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">getExposedPorts</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>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><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>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getIpAndHost-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">getIpAndHost</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>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static <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>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getLocalIpAndHost-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">getLocalIpAndHost</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>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><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;<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>,org.apache.hadoop.yarn.api.records.LocalResource&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getLocalResources-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">getLocalResources</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>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getNMEnvVar-java.lang.String-">getNMEnvVar</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;varname)</code>&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getPidFilePath-org.apache.hadoop.yarn.api.records.ContainerId-">getPidFilePath</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</code>
<div class="block">Get the pidFile of the container.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code><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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getProcessId-org.apache.hadoop.yarn.api.records.ContainerId-">getProcessId</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerID)</code>
<div class="block">Get the process-identifier for the container.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>protected <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>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getRunCommand-java.lang.String-java.lang.String-java.lang.String-org.apache.hadoop.fs.Path-org.apache.hadoop.conf.Configuration-">getRunCommand</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;command,
<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;groupId,
<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;userName,
org.apache.hadoop.fs.Path&nbsp;pidFile,
org.apache.hadoop.conf.Configuration&nbsp;config)</code>
<div class="block">Return a command line to execute the given command in the OS shell.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>protected <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>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getRunCommand-java.lang.String-java.lang.String-java.lang.String-org.apache.hadoop.fs.Path-org.apache.hadoop.conf.Configuration-org.apache.hadoop.yarn.api.records.Resource-">getRunCommand</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;command,
<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;groupId,
<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;userName,
org.apache.hadoop.fs.Path&nbsp;pidFile,
org.apache.hadoop.conf.Configuration&nbsp;config,
org.apache.hadoop.yarn.api.records.Resource&nbsp;resource)</code>
<div class="block">Return a command line to execute the given command in the OS shell.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>protected <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>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getRunCommandForOther-java.lang.String-org.apache.hadoop.conf.Configuration-">getRunCommandForOther</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;command,
org.apache.hadoop.conf.Configuration&nbsp;config)</code>
<div class="block">Return a command line to execute the given command in the OS shell.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>protected <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>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#getRunCommandForWindows-java.lang.String-java.lang.String-java.lang.String-org.apache.hadoop.fs.Path-org.apache.hadoop.conf.Configuration-org.apache.hadoop.yarn.api.records.Resource-">getRunCommandForWindows</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;command,
<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;groupId,
<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;userName,
org.apache.hadoop.fs.Path&nbsp;pidFile,
org.apache.hadoop.conf.Configuration&nbsp;config,
org.apache.hadoop.yarn.api.records.Resource&nbsp;resource)</code>
<div class="block">Return a command line to execute the given command in the OS shell.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#init-org.apache.hadoop.yarn.server.nodemanager.Context-">init</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)</code>
<div class="block">Run the executor initialization steps.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#isContainerActive-org.apache.hadoop.yarn.api.records.ContainerId-">isContainerActive</a></span>(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</code>
<div class="block">Return whether the container is still active.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>abstract boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#isContainerAlive-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerLivenessContext-">isContainerAlive</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerLivenessContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerLivenessContext</a>&nbsp;ctx)</code>
<div class="block">Check if a container is alive.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>abstract int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#launchContainer-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerStartContext-">launchContainer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerStartContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerStartContext</a>&nbsp;ctx)</code>
<div class="block">Launch the container on the node.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#localizeClasspathJar-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-java.lang.String-">localizeClasspathJar</a></span>(org.apache.hadoop.fs.Path&nbsp;jarPath,
org.apache.hadoop.fs.Path&nbsp;target,
<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;owner)</code>
<div class="block">This function localizes the JAR file on-demand.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#logOutput-java.lang.String-">logOutput</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;output)</code>
<div class="block">Log each line of the output string as INFO level log messages.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#pauseContainer-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">pauseContainer</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">Pause the container.</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#prepareContainer-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerPrepareContext-">prepareContainer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerPrepareContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerPrepareContext</a>&nbsp;ctx)</code>
<div class="block">Prepare the container prior to the launch environment being written.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#reacquireContainer-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerReacquisitionContext-">reacquireContainer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerReacquisitionContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerReacquisitionContext</a>&nbsp;ctx)</code>
<div class="block">Recover an already existing container.</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#readDirAsUser-java.lang.String-org.apache.hadoop.fs.Path-">readDirAsUser</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;user,
org.apache.hadoop.fs.Path&nbsp;dir)</code>
<div class="block">Return the files in the target directory.</div>
</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>abstract boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#reapContainer-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerReapContext-">reapContainer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerReapContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerReapContext</a>&nbsp;ctx)</code>
<div class="block">Perform the steps necessary to reap the container.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>abstract int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#relaunchContainer-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerStartContext-">relaunchContainer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerStartContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerStartContext</a>&nbsp;ctx)</code>
<div class="block">Relaunch the container on the node.</div>
</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#resumeContainer-org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container-">resumeContainer</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">Resume the container from pause state.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>abstract boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#signalContainer-org.apache.hadoop.yarn.server.nodemanager.executor.ContainerSignalContext-">signalContainer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerSignalContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerSignalContext</a>&nbsp;ctx)</code>
<div class="block">Signal container with the specified signal.</div>
</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#start--">start</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i33" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#startLocalizer-org.apache.hadoop.yarn.server.nodemanager.executor.LocalizerStartContext-">startLocalizer</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/LocalizerStartContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">LocalizerStartContext</a>&nbsp;ctx)</code>
<div class="block">Prepare the environment for containers in this application to execute.</div>
</td>
</tr>
<tr id="i34" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#stop--">stop</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i35" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#symLink-java.lang.String-java.lang.String-">symLink</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;target,
<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;symlink)</code>
<div class="block">Create a symlink file which points to the target.</div>
</td>
</tr>
<tr id="i36" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#updateYarnSysFS-org.apache.hadoop.yarn.server.nodemanager.Context-java.lang.String-java.lang.String-java.lang.String-">updateYarnSysFS</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/Context.html" title="interface in org.apache.hadoop.yarn.server.nodemanager">Context</a>&nbsp;ctx,
<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;user,
<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;appId,
<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;spec)</code>
<div class="block">Update cluster information inside container.</div>
</td>
</tr>
<tr id="i37" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#writeLaunchEnv-java.io.OutputStream-java.util.Map-java.util.Map-java.util.List-org.apache.hadoop.fs.Path-java.lang.String-java.util.LinkedHashSet-">writeLaunchEnv</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<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;<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>,<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>&gt;&nbsp;environment,
<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.fs.Path,<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&gt;&nbsp;resources,
<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;command,
org.apache.hadoop.fs.Path&nbsp;logDir,
<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;user,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/LinkedHashSet.html?is-external=true" title="class or interface in java.util">LinkedHashSet</a>&lt;<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>&gt;&nbsp;nmVars)</code>
<div class="block">This method writes out the launch environment of a container to the
default container launch script.</div>
</td>
</tr>
<tr id="i38" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.html#writeLaunchEnv-java.io.OutputStream-java.util.Map-java.util.Map-java.util.List-org.apache.hadoop.fs.Path-java.lang.String-java.lang.String-java.util.LinkedHashSet-">writeLaunchEnv</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<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;<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>,<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>&gt;&nbsp;environment,
<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.fs.Path,<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&gt;&nbsp;resources,
<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;command,
org.apache.hadoop.fs.Path&nbsp;logDir,
<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;user,
<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;outFilename,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/LinkedHashSet.html?is-external=true" title="class or interface in java.util">LinkedHashSet</a>&lt;<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>&gt;&nbsp;nmVars)</code>
<div class="block">This method writes out the launch environment of a container to a specified
path.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<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#toString--" title="class or interface in java.lang">toString</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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<a name="WILDCARD">
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<pre>protected static final&nbsp;<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> WILDCARD</pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.yarn.server.nodemanager.ContainerExecutor.WILDCARD">Constant Field Values</a></dd>
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<pre>public static final&nbsp;<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> TOKEN_FILE_NAME_FMT</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.yarn.server.nodemanager.ContainerExecutor.TOKEN_FILE_NAME_FMT">Constant Field Values</a></dd>
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<h4>TASK_LAUNCH_SCRIPT_PERMISSION</h4>
<pre>public static final&nbsp;org.apache.hadoop.fs.permission.FsPermission TASK_LAUNCH_SCRIPT_PERMISSION</pre>
<div class="block">The permissions to use when creating the launch script.</div>
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<pre>public static final&nbsp;<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> DIRECTORY_CONTENTS</pre>
<div class="block">The relative path to which debug information will be written.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.ShellScriptBuilder.html#listDebugInformation-org.apache.hadoop.fs.Path-"><code>ContainerLaunch.ShellScriptBuilder.listDebugInformation(org.apache.hadoop.fs.Path)</code></a>,
<a href="../../../../../../constant-values.html#org.apache.hadoop.yarn.server.nodemanager.ContainerExecutor.DIRECTORY_CONTENTS">Constant Field Values</a></dd>
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<pre>public&nbsp;ContainerExecutor()</pre>
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<h4>setConf</h4>
<pre>public&nbsp;void&nbsp;setConf(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>setConf</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.conf.Configurable</code></dd>
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<h4>getConf</h4>
<pre>public&nbsp;org.apache.hadoop.conf.Configuration&nbsp;getConf()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getConf</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.conf.Configurable</code></dd>
</dl>
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<pre>public abstract&nbsp;void&nbsp;init(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/Context.html" title="interface in org.apache.hadoop.yarn.server.nodemanager">Context</a>&nbsp;nmContext)
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">Run the executor initialization steps.
Verify that the necessary configs and permissions are in place.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>nmContext</code> - Context of NM</dd>
<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> - if initialization fails</dd>
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<h4>start</h4>
<pre>public&nbsp;void&nbsp;start()</pre>
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<pre>public&nbsp;void&nbsp;stop()</pre>
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<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;localizeClasspathJar(org.apache.hadoop.fs.Path&nbsp;jarPath,
org.apache.hadoop.fs.Path&nbsp;target,
<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;owner)
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">This function localizes the JAR file on-demand.
On Windows the ContainerLaunch creates a temporary special JAR manifest of
other JARs to workaround the CLASSPATH length. In a secure cluster this
JAR must be localized so that the container has access to it.
The default implementation returns the classpath passed to it, which
is expected to have been created in the node manager's <i>fprivate</i>
folder, which will not work with secure Windows clusters.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>jarPath</code> - the path to the JAR to localize</dd>
<dd><code>target</code> - the directory where the JAR file should be localized</dd>
<dd><code>owner</code> - the name of the user who should own the localized file</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the path to the localized JAR file</dd>
<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> - if localization fails</dd>
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<pre>public abstract&nbsp;void&nbsp;startLocalizer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/LocalizerStartContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">LocalizerStartContext</a>&nbsp;ctx)
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>,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
<div class="block">Prepare the environment for containers in this application to execute.
<pre>
For $x in local.dirs
create $x/$user/$appId
Copy $nmLocal/appTokens -&gt; $N/$user/$appId
For $rsrc in private resources
Copy $rsrc -&gt; $N/$user/filecache/[idef]
For $rsrc in job resources
Copy $rsrc -&gt; $N/$user/$appId/filecache/idef
</pre></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - LocalizerStartContext that encapsulates necessary information
for starting a localizer.</dd>
<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> - for most application init failures</dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code> - if application init thread is halted by NM</dd>
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<pre>public&nbsp;void&nbsp;prepareContainer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerPrepareContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerPrepareContext</a>&nbsp;ctx)
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">Prepare the container prior to the launch environment being written.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for launching containers.</dd>
<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> - if errors occur during container preparation</dd>
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<pre>public abstract&nbsp;int&nbsp;launchContainer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerStartContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerStartContext</a>&nbsp;ctx)
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>,
org.apache.hadoop.yarn.exceptions.ConfigurationException</pre>
<div class="block">Launch the container on the node. This is a blocking call and returns only
when the container exits.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for launching containers.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the return status of the launch</dd>
<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> - if the container launch fails</dd>
<dd><code>org.apache.hadoop.yarn.exceptions.ConfigurationException</code> - if config error was found</dd>
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<pre>public abstract&nbsp;int&nbsp;relaunchContainer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerStartContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerStartContext</a>&nbsp;ctx)
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>,
org.apache.hadoop.yarn.exceptions.ConfigurationException</pre>
<div class="block">Relaunch the container on the node. This is a blocking call and returns
only when the container exits.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for relaunching containers.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the return status of the relaunch</dd>
<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> - if the container relaunch fails</dd>
<dd><code>org.apache.hadoop.yarn.exceptions.ConfigurationException</code> - if config error was found</dd>
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<pre>public abstract&nbsp;boolean&nbsp;signalContainer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerSignalContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerSignalContext</a>&nbsp;ctx)
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">Signal container with the specified signal.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for signaling containers.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>returns true if the operation succeeded</dd>
<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> - if signaling the container fails</dd>
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<pre>public abstract&nbsp;boolean&nbsp;reapContainer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerReapContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerReapContext</a>&nbsp;ctx)
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">Perform the steps necessary to reap the container.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for reaping containers.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>returns true if the operation succeeded.</dd>
<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> - if reaping the container fails.</dd>
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<pre>public abstract&nbsp;org.apache.hadoop.hdfs.protocol.datatransfer.IOStreamPair&nbsp;execContainer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerExecContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerExecContext</a>&nbsp;ctx)
throws <a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/runtime/ContainerExecutionException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime">ContainerExecutionException</a></pre>
<div class="block">Perform interactive docker command into running container.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for exec containers.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>return input/output stream if the operation succeeded.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/runtime/ContainerExecutionException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime">ContainerExecutionException</a></code> - if container exec fails.</dd>
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<pre>public abstract&nbsp;void&nbsp;deleteAsUser(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/DeletionAsUserContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">DeletionAsUserContext</a>&nbsp;ctx)
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>,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
<div class="block">Delete specified directories as a given user.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for deletion.</dd>
<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> - if delete fails</dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code> - if interrupted while waiting for the deletion
operation to complete</dd>
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<pre>public abstract&nbsp;void&nbsp;symLink(<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;target,
<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;symlink)
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 a symlink file which points to the target.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>target</code> - The target for symlink</dd>
<dd><code>symlink</code> - the symlink file</dd>
<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> - Error when creating symlinks</dd>
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<pre>public abstract&nbsp;boolean&nbsp;isContainerAlive(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerLivenessContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerLivenessContext</a>&nbsp;ctx)
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">Check if a container is alive.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - Encapsulates information necessary for container liveness check.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if container is still alive</dd>
<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> - if there is a failure while checking the container
status</dd>
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<pre>public&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;<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>,org.apache.hadoop.yarn.api.records.LocalResource&gt;&nbsp;getLocalResources(<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="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>
<dl>
<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>
</dl>
</li>
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<pre>public abstract&nbsp;void&nbsp;updateYarnSysFS(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/Context.html" title="interface in org.apache.hadoop.yarn.server.nodemanager">Context</a>&nbsp;ctx,
<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;user,
<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;appId,
<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;spec)
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">Update cluster information inside container.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - ContainerRuntimeContext</dd>
<dd><code>user</code> - Owner of application</dd>
<dd><code>appId</code> - YARN application ID</dd>
<dd><code>spec</code> - Service Specification</dd>
<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> - if there is a failure while writing spec to disk</dd>
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<pre>public&nbsp;int&nbsp;reacquireContainer(<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/executor/ContainerReacquisitionContext.html" title="class in org.apache.hadoop.yarn.server.nodemanager.executor">ContainerReacquisitionContext</a>&nbsp;ctx)
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>,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
<div class="block">Recover an already existing container. This is a blocking call and returns
only when the container exits. Note that the container must have been
activated prior to this call.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ctx</code> - encapsulates information necessary to reacquire container</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The exit code of the pre-existing container</dd>
<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> - if there is a failure while reacquiring the container</dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code> - if interrupted while waiting to reacquire
the container</dd>
</dl>
</li>
</ul>
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<pre>public&nbsp;void&nbsp;writeLaunchEnv(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<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;<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>,<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>&gt;&nbsp;environment,
<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.fs.Path,<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&gt;&nbsp;resources,
<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;command,
org.apache.hadoop.fs.Path&nbsp;logDir,
<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;user,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/LinkedHashSet.html?is-external=true" title="class or interface in java.util">LinkedHashSet</a>&lt;<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>&gt;&nbsp;nmVars)
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">This method writes out the launch environment of a container to the
default container launch script. For the default container script path see
<a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.html#CONTAINER_SCRIPT"><code>ContainerLaunch.CONTAINER_SCRIPT</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>out</code> - the output stream to which the environment is written (usually
a script file which will be executed by the Launcher)</dd>
<dd><code>environment</code> - the environment variables and their values</dd>
<dd><code>resources</code> - the resources which have been localized for this
container. Symlinks will be created to these localized resources</dd>
<dd><code>command</code> - the command that will be run</dd>
<dd><code>logDir</code> - the log dir to which to copy debugging information</dd>
<dd><code>user</code> - the username of the job owner</dd>
<dd><code>nmVars</code> - the set of environment vars that are explicitly set by NM</dd>
<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> - if any errors happened writing to the OutputStream,
while creating symlinks</dd>
</dl>
</li>
</ul>
<a name="writeLaunchEnv-java.io.OutputStream-java.util.Map-java.util.Map-java.util.List-org.apache.hadoop.fs.Path-java.lang.String-java.lang.String-java.util.LinkedHashSet-">
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<pre>public&nbsp;void&nbsp;writeLaunchEnv(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<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;<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>,<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>&gt;&nbsp;environment,
<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.fs.Path,<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&gt;&nbsp;resources,
<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;command,
org.apache.hadoop.fs.Path&nbsp;logDir,
<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;user,
<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;outFilename,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/LinkedHashSet.html?is-external=true" title="class or interface in java.util">LinkedHashSet</a>&lt;<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>&gt;&nbsp;nmVars)
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">This method writes out the launch environment of a container to a specified
path.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>out</code> - the output stream to which the environment is written (usually
a script file which will be executed by the Launcher)</dd>
<dd><code>environment</code> - the environment variables and their values</dd>
<dd><code>resources</code> - the resources which have been localized for this
container. Symlinks will be created to these localized resources</dd>
<dd><code>command</code> - the command that will be run</dd>
<dd><code>logDir</code> - the log dir to which to copy debugging information</dd>
<dd><code>user</code> - the username of the job owner</dd>
<dd><code>outFilename</code> - the path to which to write the launch environment</dd>
<dd><code>nmVars</code> - the set of environment vars that are explicitly set by NM</dd>
<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> - if any errors happened writing to the OutputStream,
while creating symlinks</dd>
</dl>
</li>
</ul>
<a name="readDirAsUser-java.lang.String-org.apache.hadoop.fs.Path-">
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<h4>readDirAsUser</h4>
<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>[]&nbsp;readDirAsUser(<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;user,
org.apache.hadoop.fs.Path&nbsp;dir)</pre>
<div class="block">Return the files in the target directory. If retrieving the list of files
requires specific access rights, that access will happen as the
specified user. The list will not include entries for "." or "..".</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>user</code> - the user as whom to access the target directory</dd>
<dd><code>dir</code> - the target directory</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a list of files in the target directory</dd>
</dl>
</li>
</ul>
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<h4>logOutput</h4>
<pre>protected&nbsp;void&nbsp;logOutput(<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;output)</pre>
<div class="block">Log each line of the output string as INFO level log messages.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>output</code> - the output string to log</dd>
</dl>
</li>
</ul>
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<h4>getPidFilePath</h4>
<pre>protected&nbsp;org.apache.hadoop.fs.Path&nbsp;getPidFilePath(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</pre>
<div class="block">Get the pidFile of the container.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerId</code> - the container ID</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the path of the pid-file for the given containerId.</dd>
</dl>
</li>
</ul>
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<pre>protected&nbsp;<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;getRunCommand(<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;command,
<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;groupId,
<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;userName,
org.apache.hadoop.fs.Path&nbsp;pidFile,
org.apache.hadoop.conf.Configuration&nbsp;config)</pre>
<div class="block">Return a command line to execute the given command in the OS shell.
On Windows, the {code}groupId{code} parameter can be used to launch
and associate the given GID with a process group. On
non-Windows hosts, the {code}groupId{code} parameter is ignored.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>command</code> - the command to execute</dd>
<dd><code>groupId</code> - the job owner's GID</dd>
<dd><code>userName</code> - the job owner's username</dd>
<dd><code>pidFile</code> - the path to the container's PID file</dd>
<dd><code>config</code> - the configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the command line to execute</dd>
</dl>
</li>
</ul>
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<pre>protected&nbsp;<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;getRunCommand(<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;command,
<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;groupId,
<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;userName,
org.apache.hadoop.fs.Path&nbsp;pidFile,
org.apache.hadoop.conf.Configuration&nbsp;config,
org.apache.hadoop.yarn.api.records.Resource&nbsp;resource)</pre>
<div class="block">Return a command line to execute the given command in the OS shell.
On Windows, the {code}groupId{code} parameter can be used to launch
and associate the given GID with a process group. On
non-Windows hosts, the {code}groupId{code} parameter is ignored.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>command</code> - the command to execute</dd>
<dd><code>groupId</code> - the job owner's GID for Windows. On other operating systems
it is ignored.</dd>
<dd><code>userName</code> - the job owner's username for Windows. On other operating
systems it is ignored.</dd>
<dd><code>pidFile</code> - the path to the container's PID file on Windows. On other
operating systems it is ignored.</dd>
<dd><code>config</code> - the configuration</dd>
<dd><code>resource</code> - on Windows this parameter controls memory and CPU limits.
If null, no limits are set. On other operating systems it is ignored.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the command line to execute</dd>
</dl>
</li>
</ul>
<a name="getRunCommandForWindows-java.lang.String-java.lang.String-java.lang.String-org.apache.hadoop.fs.Path-org.apache.hadoop.conf.Configuration-org.apache.hadoop.yarn.api.records.Resource-">
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<pre>protected&nbsp;<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;getRunCommandForWindows(<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;command,
<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;groupId,
<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;userName,
org.apache.hadoop.fs.Path&nbsp;pidFile,
org.apache.hadoop.conf.Configuration&nbsp;config,
org.apache.hadoop.yarn.api.records.Resource&nbsp;resource)</pre>
<div class="block">Return a command line to execute the given command in the OS shell.
The {code}groupId{code} parameter can be used to launch
and associate the given GID with a process group.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>command</code> - the command to execute</dd>
<dd><code>groupId</code> - the job owner's GID</dd>
<dd><code>userName</code> - the job owner's username</dd>
<dd><code>pidFile</code> - the path to the container's PID file</dd>
<dd><code>config</code> - the configuration</dd>
<dd><code>resource</code> - this parameter controls memory and CPU limits.
If null, no limits are set.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the command line to execute</dd>
</dl>
</li>
</ul>
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<pre>protected&nbsp;<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;getRunCommandForOther(<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;command,
org.apache.hadoop.conf.Configuration&nbsp;config)</pre>
<div class="block">Return a command line to execute the given command in the OS shell.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>command</code> - the command to execute</dd>
<dd><code>config</code> - the configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the command line to execute</dd>
</dl>
</li>
</ul>
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<pre>protected&nbsp;boolean&nbsp;isContainerActive(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</pre>
<div class="block">Return whether the container is still active.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerId</code> - the target container's ID</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the container is active</dd>
</dl>
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<pre>protected&nbsp;<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;getNMEnvVar(<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;varname)</pre>
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<pre>public&nbsp;void&nbsp;activateContainer(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId,
org.apache.hadoop.fs.Path&nbsp;pidFilePath)</pre>
<div class="block">Mark the container as active.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerId</code> - the container ID</dd>
<dd><code>pidFilePath</code> - the path where the executor should write the PID
of the launched process</dd>
</dl>
</li>
</ul>
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<pre>public&nbsp;<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;getIpAndHost(<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/runtime/ContainerExecutionException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime">ContainerExecutionException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/runtime/ContainerExecutionException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime">ContainerExecutionException</a></code></dd>
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<pre>public static&nbsp;<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;getLocalIpAndHost(<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)</pre>
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<h4>deactivateContainer</h4>
<pre>public&nbsp;void&nbsp;deactivateContainer(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerId)</pre>
<div class="block">Mark the container as inactive. For inactive containers this
method has no effect.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerId</code> - the container ID</dd>
</dl>
</li>
</ul>
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<pre>public&nbsp;void&nbsp;pauseContainer(<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)</pre>
<div class="block">Pause the container. The default implementation is to raise a kill event.
Specific executor implementations can override this behavior.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>container</code> - the Container</dd>
</dl>
</li>
</ul>
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<pre>public&nbsp;void&nbsp;resumeContainer(<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)</pre>
<div class="block">Resume the container from pause state. The default implementation ignores
this event. Specific implementations can override this behavior.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>container</code> - the Container</dd>
</dl>
</li>
</ul>
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<pre>public&nbsp;void&nbsp;cleanupBeforeRelaunch(<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="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
<div class="block">Perform any cleanup before the next launch of the container.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>container</code> - container</dd>
<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>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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<pre>public&nbsp;<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;getProcessId(org.apache.hadoop.yarn.api.records.ContainerId&nbsp;containerID)</pre>
<div class="block">Get the process-identifier for the container.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>containerID</code> - the container ID</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the process ID of the container if it has already launched,
or null otherwise</dd>
</dl>
</li>
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<pre>public&nbsp;<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;getExposedPorts(<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/runtime/ContainerExecutionException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime">ContainerExecutionException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/yarn/server/nodemanager/containermanager/runtime/ContainerExecutionException.html" title="class in org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime">ContainerExecutionException</a></code></dd>
</dl>
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