org.apache.flink.runtime.io.network.partition

Class ResultSubpartition

java.lang.Object

org.apache.flink.runtime.io.network.partition.ResultSubpartition

public abstract class ResultSubpartition
extends Object

A single subpartition of a ResultPartition instance.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	index The index of the subpartition at the parent partition.
protected ResultPartition	parent The parent partition this subpartition belongs to.

Constructor Summary

Constructors

Constructor and Description
ResultSubpartition(int index, ResultPartition parent)

Method Summary

Methods

Modifier and Type	Method and Description
abstract boolean	add(Buffer buffer)
abstract ResultSubpartitionView	createReadView(BufferAvailabilityListener availabilityListener)
abstract void	finish()
protected Throwable	getFailureCause()
protected long	getTotalNumberOfBuffers()
protected long	getTotalNumberOfBytes()
abstract boolean	isReleased()
protected void	onConsumedSubpartition() Notifies the parent partition about a consumed ResultSubpartitionView.
abstract void	release()
abstract int	unsynchronizedGetNumberOfQueuedBuffers() Makes a best effort to get the current size of the queue.
protected void	updateStatistics(Buffer buffer)

Methods inherited from class java.lang.Object

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

Field Detail

index

protected final int index

The index of the subpartition at the parent partition.

parent

protected final ResultPartition parent

The parent partition this subpartition belongs to.

Constructor Detail

ResultSubpartition

public ResultSubpartition(int index,
                  ResultPartition parent)

Method Detail

updateStatistics

protected void updateStatistics(Buffer buffer)

getTotalNumberOfBuffers

protected long getTotalNumberOfBuffers()

getTotalNumberOfBytes

protected long getTotalNumberOfBytes()

onConsumedSubpartition

protected void onConsumedSubpartition()

Notifies the parent partition about a consumed ResultSubpartitionView.

getFailureCause

protected Throwable getFailureCause()

add

public abstract boolean add(Buffer buffer)
                     throws IOException

Throws:

IOException

finish

public abstract void finish()
                     throws IOException

Throws:

IOException

release

public abstract void release()
                      throws IOException

Throws:

IOException

createReadView

public abstract ResultSubpartitionView createReadView(BufferAvailabilityListener availabilityListener)
                                               throws IOException

Throws:

IOException

isReleased

public abstract boolean isReleased()

unsynchronizedGetNumberOfQueuedBuffers

public abstract int unsynchronizedGetNumberOfQueuedBuffers()

Makes a best effort to get the current size of the queue. This method must not acquire locks or interfere with the task and network threads in any way.