org.apache.tez.runtime.api.events
Class CompositeDataMovementEvent

java.lang.Object
  org.apache.tez.runtime.api.Event
      org.apache.tez.runtime.api.events.CompositeDataMovementEvent

public class CompositeDataMovementEvent
extends Event

A convenience class to specify multiple DataMovementEvents which share the same payload. A contiguous range of srcIndices can be specified. This event will NOT be seen by downstream Inputs - instead they will see DataMovementEvents which are generated based on the range specified in this event. This event should be used by an output which has the same payload for all of the Physical Outputs that it generates.

Field Summary

protected int	sourceIndexEnd
protected int	sourceIndexStart
protected byte[]	userPayload
protected int	version

Constructor Summary

CompositeDataMovementEvent(int srcIndexStart, int srcIndexEnd, byte[] userPayload)

Method Summary

Iterable<DataMovementEvent>	getEvents()
int	getSourceIndexEnd()
int	getSourceIndexStart()
byte[]	getUserPayload()
int	getVersion()
void	setVersion(int version)

Methods inherited from class java.lang.Object

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

Field Detail

sourceIndexStart

protected final int sourceIndexStart

sourceIndexEnd

protected final int sourceIndexEnd

version

protected int version

userPayload

protected final byte[] userPayload

Constructor Detail

CompositeDataMovementEvent

public CompositeDataMovementEvent(int srcIndexStart,
                                  int srcIndexEnd,
                                  byte[] userPayload)

Parameters:

srcIndexStart - the startIndex of the physical source which generated the event (inclusive)

srcIndexEnd - the endIndex of the physical source which generated the event (non-inclusive)

userPayload - the common payload between all the events.

Method Detail

getSourceIndexStart

public int getSourceIndexStart()

getSourceIndexEnd

public int getSourceIndexEnd()

getUserPayload

public byte[] getUserPayload()

setVersion

public void setVersion(int version)

getVersion

public int getVersion()

getEvents

public Iterable<DataMovementEvent> getEvents()