org.apache.hadoop.mapreduce.lib.reduce

Class WrappedReducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

org.apache.hadoop.mapreduce.lib.reduce.WrappedReducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public class WrappedReducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
extends Reducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

A Reducer which wraps a given one to allow for custom Reducer.Context implementations.

Constructor Summary

Constructors

Constructor and Description
WrappedReducer()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.Reducer.Context	getReducerContext(ReduceContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> reduceContext) A a wrapped Reducer.Context for custom implementations.

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

WrappedReducer

public WrappedReducer()

Method Detail

getReducerContext

public org.apache.hadoop.mapreduce.Reducer.Context getReducerContext(ReduceContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> reduceContext)

A a wrapped Reducer.Context for custom implementations.

Parameters:

reduceContext - ReduceContext to be wrapped

Returns:

a wrapped Reducer.Context for custom implementations