org.openimaj.hadoop.mapreduce.stage

Class IdentityReducer<MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE,OUTPUT_KEY,OUTPUT_VALUE>

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE,OUTPUT_KEY,OUTPUT_VALUE>

org.openimaj.hadoop.mapreduce.stage.IdentityReducer<MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE,OUTPUT_KEY,OUTPUT_VALUE>

Type Parameters:

MAP_OUTPUT_KEY - Map output key type

MAP_OUTPUT_VALUE - Map output value type

OUTPUT_KEY -

OUTPUT_VALUE -

public class IdentityReducer<MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE,OUTPUT_KEY,OUTPUT_VALUE>
extends org.apache.hadoop.mapreduce.Reducer<MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE,OUTPUT_KEY,OUTPUT_VALUE>

The identity reducer outputs what it gets as input.

Author:

Sina Samangooei (ss@ecs.soton.ac.uk)

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer

org.apache.hadoop.mapreduce.Reducer.Context

Constructor Summary

Constructors

Constructor and Description
IdentityReducer() Default constructor

Method Summary

Methods inherited from class org.apache.hadoop.mapreduce.Reducer

cleanup, reduce, run, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

IdentityReducer

public IdentityReducer()

Default constructor