org.apache.hadoop.util

Class RunJar

java.lang.Object

org.apache.hadoop.util.RunJar

@InterfaceAudience.Private
@InterfaceStability.Unstable
public class RunJar
extends Object

Run a Hadoop job jar.

Field Summary

Fields

Modifier and Type	Field and Description
static Pattern	MATCH_ANY Pattern that matches any string
static int	SHUTDOWN_HOOK_PRIORITY Priority of the RunJar shutdown hook.

Constructor Summary

Constructors

Constructor and Description
RunJar()

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(String[] args) Run a Hadoop job jar.
static void	unJar(File jarFile, File toDir) Unpack a jar file into a directory.
static void	unJar(File jarFile, File toDir, Pattern unpackRegex) Unpack matching files from a jar.

Methods inherited from class java.lang.Object

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

Field Detail

MATCH_ANY

public static final Pattern MATCH_ANY

Pattern that matches any string

SHUTDOWN_HOOK_PRIORITY

public static final int SHUTDOWN_HOOK_PRIORITY

Priority of the RunJar shutdown hook.

See Also:

Constant Field Values

Constructor Detail

RunJar

public RunJar()

Method Detail

unJar

public static void unJar(File jarFile,
         File toDir)
                  throws IOException

Unpack a jar file into a directory. This version unpacks all files inside the jar regardless of filename.

Throws:

IOException

unJar

public static void unJar(File jarFile,
         File toDir,
         Pattern unpackRegex)
                  throws IOException

Unpack matching files from a jar. Entries inside the jar that do not match the given pattern will be skipped.

Parameters:

jarFile - the .jar file to unpack

toDir - the destination directory into which to unpack the jar

unpackRegex - the pattern to match jar entries against

Throws:

IOException

main

public static void main(String[] args)
                 throws Throwable

Run a Hadoop job jar. If the main class is not in the jar's manifest, then it must be provided on the command line.

Throws:

Throwable