Package org.apache.hadoop.yarn.server.nodemanager

Class DefaultContainerExecutor.LocalWrapperScriptBuilder

java.lang.Object

org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.LocalWrapperScriptBuilder

Enclosing class:

DefaultContainerExecutor

protected abstract class DefaultContainerExecutor.LocalWrapperScriptBuilder
extends java.lang.Object

This class is a utility to create a wrapper script that is platform appropriate.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LocalWrapperScriptBuilder(org.apache.hadoop.fs.Path containerWorkDir)	Create an instance for the given container working directory.

Method Summary

Modifier and Type	Method	Description
org.apache.hadoop.fs.Path	getWrapperScriptPath()	Return the path for the wrapper script.
void	writeLocalWrapperScript(org.apache.hadoop.fs.Path launchDst, org.apache.hadoop.fs.Path pidFile)	Write out the wrapper script for the container launch script.
protected abstract void	writeLocalWrapperScript(org.apache.hadoop.fs.Path launchDst, org.apache.hadoop.fs.Path pidFile, java.io.PrintStream pout)	Write out the wrapper script for the container launch script.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocalWrapperScriptBuilder

protected LocalWrapperScriptBuilder(org.apache.hadoop.fs.Path containerWorkDir)

Create an instance for the given container working directory.

Parameters:

containerWorkDir - the working directory for the container

Method Detail

getWrapperScriptPath

public org.apache.hadoop.fs.Path getWrapperScriptPath()

Return the path for the wrapper script.

Returns:

the path for the wrapper script

writeLocalWrapperScript

public void writeLocalWrapperScript(org.apache.hadoop.fs.Path launchDst,
                                    org.apache.hadoop.fs.Path pidFile)
                             throws java.io.IOException

Write out the wrapper script for the container launch script. This method will create the script at the configured wrapper script path.

Parameters:

launchDst - the script to launch

pidFile - the file that will hold the PID

Throws:

java.io.IOException - if the wrapper script cannot be created

See Also:

getWrapperScriptPath()

writeLocalWrapperScript

protected abstract void writeLocalWrapperScript(org.apache.hadoop.fs.Path launchDst,
                                                org.apache.hadoop.fs.Path pidFile,
                                                java.io.PrintStream pout)

Write out the wrapper script for the container launch script.

Parameters:

launchDst - the script to launch

pidFile - the file that will hold the PID

pout - the stream to use to write out the wrapper script