org.apache.reef.wake.impl

Class IndependentIterationsThreadPoolStage<T>

java.lang.Object

org.apache.reef.wake.AbstractEStage<List<T>>

org.apache.reef.wake.impl.IndependentIterationsThreadPoolStage<T>

All Implemented Interfaces:

AutoCloseable, EStage<List<T>>, EventHandler<List<T>>, Stage

public class IndependentIterationsThreadPoolStage<T>
extends AbstractEStage<List<T>>

This stage uses a thread pool to schedule events in parallel. Should be used when input events are already materialized in a List and can be fired in any order.

Constructor Summary

Constructors

Constructor and Description
IndependentIterationsThreadPoolStage(EventHandler<T> handler, int numThreads, int granularity) Create a thread pool with fixed threads.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	onNext(List<T> iterations) Handles an event.

Methods inherited from class org.apache.reef.wake.AbstractEStage

getInMeter, getOutMeter, isClosed, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IndependentIterationsThreadPoolStage

public IndependentIterationsThreadPoolStage(EventHandler<T> handler,
                                    int numThreads,
                                    int granularity)

Create a thread pool with fixed threads.

Parameters:

handler - an event handler

numThreads - fixed number of threads available in the pool

granularity - maximum number of events executed serially. The right choice will balance task spawn overhead with parallelism.

Method Detail

onNext

public void onNext(List<T> iterations)

Description copied from interface: EventHandler

Handles an event.

Parameters:

iterations - an event

close

public void close()
           throws Exception

Throws:

Exception