org.apache.hadoop.examples.pi

Class DistSum.ReduceSide

java.lang.Object

org.apache.hadoop.examples.pi.DistSum.Machine

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

Enclosing class:

DistSum

public static class DistSum.ReduceSide
extends DistSum.Machine

A machine which does computation on the reduce side.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DistSum.ReduceSide.IndexPartitioner Use the index for partitioning.
static class	DistSum.ReduceSide.PartitionMapper A Mapper which partitions a summation
static class	DistSum.ReduceSide.SummationInputFormat An InputFormat which returns a single summation.
static class	DistSum.ReduceSide.SummingReducer A Reducer which computes sums

Nested classes/interfaces inherited from class org.apache.hadoop.examples.pi.DistSum.Machine

DistSum.Machine.AbstractInputFormat, DistSum.Machine.SummationSplit

Constructor Summary

Constructors

Constructor and Description
ReduceSide()

Method Summary

Modifier and Type	Method and Description
void	init(org.apache.hadoop.mapreduce.Job job) Initialize a job

Methods inherited from class org.apache.hadoop.examples.pi.DistSum.Machine

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ReduceSide

public ReduceSide()

Method Detail

init

public void init(org.apache.hadoop.mapreduce.Job job)

Initialize a job