com.asakusafw.runtime.flow

Class ReducerWithRuntimeResource<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

java.lang.Object

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

com.asakusafw.runtime.flow.ReducerWithRuntimeResource<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

Type Parameters:

KEYIN - input key type

VALUEIN - input value type

KEYOUT - output key type

VALUEOUT - output value type

Direct Known Subclasses:

DirectOutputReducer, SegmentedReducer, SlotSorter

public abstract class ReducerWithRuntimeResource<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
extends org.apache.hadoop.mapreduce.Reducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

An abstract super class of a reducer with RuntimeResources.

Since:

0.5.1

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
ReducerWithRuntimeResource()

Method Summary

Modifier and Type	Method and Description
void	run(org.apache.hadoop.mapreduce.Reducer.Context context)
protected void	runInternal(org.apache.hadoop.mapreduce.Reducer.Context context) Invokes {code Reducer#run(Context)} internally.

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

cleanup, reduce, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

ReducerWithRuntimeResource

public ReducerWithRuntimeResource()

Method Detail

runInternal

protected void runInternal(org.apache.hadoop.mapreduce.Reducer.Context context)
                    throws IOException,
                           InterruptedException

Invokes {code Reducer#run(Context)} internally. Clients can override this method and implement customized run method.

Parameters:

context - current context

Throws:

IOException - if task is failed by I/O error

InterruptedException - if task execution is interrupted

run

public final void run(org.apache.hadoop.mapreduce.Reducer.Context context)
               throws IOException,
                      InterruptedException

Overrides:

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

Throws:

IOException

InterruptedException