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

DistSum.ReduceSide.IndexPartitioner()

Method Summary

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

DistSum.ReduceSide.IndexPartitioner

public DistSum.ReduceSide.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>