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

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Reducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
      extended by 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 WrappedReducer.Context implementations.


Constructor Summary
WrappedReducer()
           
 
Method Summary
 org.apache.hadoop.mapreduce.Reducer.Context getReducerContext(ReduceContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> reduceContext)
          A a wrapped WrappedReducer.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 WrappedReducer.Context for custom implementations.

Parameters:
reduceContext - ReduceContext to be wrapped
Returns:
a wrapped Reducer.Context for custom implementations


Copyright © 2012 Apache Software Foundation. All Rights Reserved.