Package org.apache.hadoop.yarn.service.containerlaunch

Class CommandLineBuilder

java.lang.Object

org.apache.hadoop.yarn.service.containerlaunch.CommandLineBuilder

Direct Known Subclasses:

JavaCommandLineBuilder

public class CommandLineBuilder
extends Object

Build a single command line to include in the container commands; Special support for JVM command buildup.

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<String>	argumentList

Constructor Summary

Constructors

Constructor	Description
CommandLineBuilder()

Method Summary

Modifier and Type	Method	Description
void	add(Object... args)	Add an entry to the command list
void	addOutAndErrFiles(String stdout, String stderr)	Append the output and error files to the tail of the command
String	build()	Build the command line
int	size()
String	toString()	This just returns the command line

Methods inherited from class java.lang.Object

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

Field Details

argumentList

protected final List<String> argumentList

Constructor Details

CommandLineBuilder

public CommandLineBuilder()

Method Details

add

public void add(Object... args)

Add an entry to the command list

Parameters:

args - arguments -these will be converted strings

size

public int size()

addOutAndErrFiles

public void addOutAndErrFiles(String stdout,
 String stderr)

Append the output and error files to the tail of the command

Parameters:

stdout - out

stderr - error. Set this to null to append into stdout

toString

public String toString()

This just returns the command line

Overrides:

toString in class Object

Returns:

the command line

See Also:

• build()

build

public String build()

Build the command line

Returns:

the command line