org.apache.hadoop.examples.pi

Class DistSum.ReduceSide.IndexPartitioner

java.lang.Object

org.apache.hadoop.mapreduce.Partitioner<org.apache.hadoop.io.IntWritable,SummationWritable>

org.apache.hadoop.examples.pi.DistSum.ReduceSide.IndexPartitioner

Enclosing class:

DistSum.ReduceSide

public static class DistSum.ReduceSide.IndexPartitioner
extends org.apache.hadoop.mapreduce.Partitioner<org.apache.hadoop.io.IntWritable,SummationWritable>

Use the index for partitioning.

Constructor Summary

Constructors

Constructor and Description
IndexPartitioner()

Method Summary

Modifier and Type	Method and Description
int	getPartition(org.apache.hadoop.io.IntWritable index, SummationWritable value, int numPartitions) Return the index as the partition.

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexPartitioner

public IndexPartitioner()

Method Detail

getPartition

public int getPartition(org.apache.hadoop.io.IntWritable index,
                        SummationWritable value,
                        int numPartitions)

Return the index as the partition.

Specified by:

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