org.apache.hadoop.examples.terasort

Class TeraSort.SimplePartitioner

java.lang.Object

org.apache.hadoop.mapreduce.Partitioner<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

org.apache.hadoop.examples.terasort.TeraSort.SimplePartitioner

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable

Enclosing class:

TeraSort

public static class TeraSort.SimplePartitioner
extends org.apache.hadoop.mapreduce.Partitioner<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
implements org.apache.hadoop.conf.Configurable

A total order partitioner that assigns keys based on their first PREFIX_LENGTH bytes, assuming a flat distribution.

Constructor Summary

Constructors

Constructor and Description
SimplePartitioner()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.conf.Configuration	getConf()
int	getPartition(org.apache.hadoop.io.Text key, org.apache.hadoop.io.Text value, int numPartitions)
void	setConf(org.apache.hadoop.conf.Configuration conf)

Methods inherited from class java.lang.Object

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

Constructor Detail

SimplePartitioner

public SimplePartitioner()

Method Detail

setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable

getConf

public org.apache.hadoop.conf.Configuration getConf()

Specified by:

getConf in interface org.apache.hadoop.conf.Configurable

getPartition

public int getPartition(org.apache.hadoop.io.Text key,
                        org.apache.hadoop.io.Text value,
                        int numPartitions)

Specified by:

getPartition in class org.apache.hadoop.mapreduce.Partitioner<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>