org.openimaj.hadoop.mapreduce.stage

Class IdentityMapper<INPUT_KEY,INPUT_VALUE,MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE>

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<INPUT_KEY,INPUT_VALUE,MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE>

org.openimaj.hadoop.mapreduce.stage.IdentityMapper<INPUT_KEY,INPUT_VALUE,MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE>

Type Parameters:

INPUT_KEY -

INPUT_VALUE -

MAP_OUTPUT_KEY -

MAP_OUTPUT_VALUE -

public class IdentityMapper<INPUT_KEY,INPUT_VALUE,MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE>
extends org.apache.hadoop.mapreduce.Mapper<INPUT_KEY,INPUT_VALUE,MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE>

The identity mapper emits what it is given as input

Author:

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

Nested Class Summary

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

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
IdentityMapper() Default constructor

Method Summary

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

cleanup, map, run, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

IdentityMapper

public IdentityMapper()

Default constructor