cascading.tap.hadoop
Class Hadoop18TapUtil

java.lang.Object
  cascading.tap.hadoop.Hadoop18TapUtil

public class Hadoop18TapUtil
extends Object

This class embodies the dependencies between Hadoop versions. It is copyright and licensed under Apache

Constructor Summary

Hadoop18TapUtil()

Method Summary

static void	cleanupTap(JobConf conf, Tap tap) Called from flow step to remove temp dirs
static void	commitTask(JobConf conf) copies all files from the taskoutputpath to the outputpath
static void	makeTempPath(JobConf conf)
static boolean	needsTaskCommit(JobConf conf)
static void	setupJob(JobConf conf) should only be called if not in a Flow

Methods inherited from class java.lang.Object

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

Constructor Detail

Hadoop18TapUtil

public Hadoop18TapUtil()

Method Detail

setupJob

public static void setupJob(JobConf conf)
                     throws IOException

should only be called if not in a Flow

Parameters:

conf -

Throws:

IOException

needsTaskCommit

public static boolean needsTaskCommit(JobConf conf)
                               throws IOException

Throws:

IOException

commitTask

public static void commitTask(JobConf conf)
                       throws IOException

copies all files from the taskoutputpath to the outputpath

Parameters:

conf -

Throws:

IOException

cleanupTap

public static void cleanupTap(JobConf conf,
                              Tap tap)
                       throws IOException

Called from flow step to remove temp dirs

Parameters:

conf -

Throws:

IOException

makeTempPath

public static void makeTempPath(JobConf conf)
                         throws IOException

Throws:

IOException