Package org.apache.hadoop.streaming

Class JarBuilder

java.lang.Object

org.apache.hadoop.streaming.JarBuilder

public class JarBuilder
extends java.lang.Object

This class is the main class for generating job.jar for Hadoop Streaming jobs. It includes the files specified with the -file option and includes them in the jar. Also, hadoop-streaming is a user level appplication, so all the classes with hadoop-streaming that are needed in the job are also included in the job.jar.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	verbose

Constructor Summary

Constructors

Constructor	Description
JarBuilder()

Method Summary

Modifier and Type	Method	Description
protected java.lang.String	fileExtension(java.lang.String file)
protected java.lang.String	getBasePathInJarOut(java.lang.String sourceFile)
static void	main(java.lang.String[] args)	Test program
void	merge(java.util.List srcNames, java.util.List srcUnjar, java.lang.String dstJar)
void	setVerbose(boolean v)

Methods inherited from class java.lang.Object

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

Field Detail

verbose

protected boolean verbose

Constructor Detail

JarBuilder

public JarBuilder()

Method Detail

setVerbose

public void setVerbose(boolean v)

merge

public void merge(java.util.List srcNames,
                  java.util.List srcUnjar,
                  java.lang.String dstJar)
           throws java.io.IOException

Throws:

java.io.IOException

fileExtension

protected java.lang.String fileExtension(java.lang.String file)

getBasePathInJarOut

protected java.lang.String getBasePathInJarOut(java.lang.String sourceFile)

Returns:

empty or a jar base path. Must not start with '/'

main

public static void main(java.lang.String[] args)

Test program