Package org.apache.hadoop.examples.terasort

Class TeraSort

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.examples.terasort.TeraSort

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

public class TeraSort
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

Generates the sampled split points, launches the job, and waits for it to finish.

To run the program: bin/hadoop jar hadoop-*-examples.jar terasort in-dir out-dir

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TeraSort.SimplePartitioner	A total order partitioner that assigns keys based on their first PREFIX_LENGTH bytes, assuming a flat distribution.

Constructor Summary

Constructors

Constructor	Description
TeraSort()

Method Summary

Modifier and Type	Method	Description
static int	getOutputReplication(org.apache.hadoop.mapreduce.JobContext job)
static boolean	getUseSimplePartitioner(org.apache.hadoop.mapreduce.JobContext job)
static void	main(java.lang.String[] args)
int	run(java.lang.String[] args)
static void	setOutputReplication(org.apache.hadoop.mapreduce.Job job, int value)
static void	setUseSimplePartitioner(org.apache.hadoop.mapreduce.Job job, boolean value)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

TeraSort

public TeraSort()

Method Detail

getUseSimplePartitioner

public static boolean getUseSimplePartitioner(org.apache.hadoop.mapreduce.JobContext job)

setUseSimplePartitioner

public static void setUseSimplePartitioner(org.apache.hadoop.mapreduce.Job job,
                                           boolean value)

getOutputReplication

public static int getOutputReplication(org.apache.hadoop.mapreduce.JobContext job)

setOutputReplication

public static void setOutputReplication(org.apache.hadoop.mapreduce.Job job,
                                        int value)

run

public int run(java.lang.String[] args)
        throws java.lang.Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

java.lang.Exception

main

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

Parameters:

args -

Throws:

java.lang.Exception