org.apache.hadoop.contrib.utils.join

Class DataJoinJob

java.lang.Object

org.apache.hadoop.contrib.utils.join.DataJoinJob

public class DataJoinJob
extends Object

This class implements the main function for creating a map/reduce job to join data of different sources. To create sucn a job, the user must implement a mapper class that extends DataJoinMapperBase class, and a reducer class that extends DataJoinReducerBase.

Constructor Summary

Constructors

Constructor and Description
DataJoinJob()

Method Summary

Methods

Modifier and Type	Method and Description
static org.apache.hadoop.mapred.JobConf	createDataJoinJob(String[] args)
static Class	getClassByName(String className)
static void	main(String[] args)
static boolean	runJob(org.apache.hadoop.mapred.JobConf job) Submit/run a map/reduce job.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataJoinJob

public DataJoinJob()

Method Detail

getClassByName

public static Class getClassByName(String className)

createDataJoinJob

public static org.apache.hadoop.mapred.JobConf createDataJoinJob(String[] args)
                                                          throws IOException

Throws:

IOException

runJob

public static boolean runJob(org.apache.hadoop.mapred.JobConf job)
                      throws IOException

Submit/run a map/reduce job.

Parameters:

job -

Returns:

true for success

Throws:

IOException

main

public static void main(String[] args)

Parameters:

args -