org.apache.flink.streaming.runtime.io

类 CheckpointBarrierAligner

java.lang.Object

org.apache.flink.streaming.runtime.io.CheckpointBarrierHandler

org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner

@Internal
public class CheckpointBarrierAligner
extends CheckpointBarrierHandler

CheckpointBarrierAligner keep tracks of received CheckpointBarrier on given channels and controls the alignment, by deciding which channels should be blocked and when to release blocked channels.

方法概要

限定符和类型	方法和说明
protected void	beginNewAlignment(long checkpointId, int channelIndex)
void	checkpointSizeLimitExceeded(long maxBufferedBytes)
long	getAlignmentDurationNanos()
long	getLatestCheckpointId()
boolean	isBlocked(int channelIndex) Checks whether the channel with the given index is blocked.
protected void	onBarrier(int channelIndex) Blocks the given channel index, from which a barrier has been received.
boolean	processBarrier(org.apache.flink.runtime.io.network.api.CheckpointBarrier receivedBarrier, int channelIndex, long bufferedBytes)
boolean	processCancellationBarrier(org.apache.flink.runtime.io.network.api.CancelCheckpointMarker cancelBarrier)
boolean	processEndOfPartition()
void	releaseBlocksAndResetBarriers()
String	toString()

从类继承的方法 org.apache.flink.streaming.runtime.io.CheckpointBarrierHandler

notifyAbort, notifyAbortOnCancellationBarrier, notifyCheckpoint

从类继承的方法 java.lang.Object

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

方法详细资料

releaseBlocksAndResetBarriers

public void releaseBlocksAndResetBarriers()

指定者:

releaseBlocksAndResetBarriers 在类中 CheckpointBarrierHandler

isBlocked

public boolean isBlocked(int channelIndex)

从类复制的说明: CheckpointBarrierHandler

Checks whether the channel with the given index is blocked.

指定者:

isBlocked 在类中 CheckpointBarrierHandler

参数:

channelIndex - The channel index to check.

返回:

True if the channel is blocked, false if not.

processBarrier

public boolean processBarrier(org.apache.flink.runtime.io.network.api.CheckpointBarrier receivedBarrier,
                              int channelIndex,
                              long bufferedBytes)
                       throws Exception

指定者:

processBarrier 在类中 CheckpointBarrierHandler

返回:

true if some blocked data should be unblocked/rolled over.

抛出:

Exception

beginNewAlignment

protected void beginNewAlignment(long checkpointId,
                                 int channelIndex)
                          throws IOException

抛出:

IOException

onBarrier

protected void onBarrier(int channelIndex)
                  throws IOException

Blocks the given channel index, from which a barrier has been received.

参数:

channelIndex - The channel index to block.

抛出:

IOException

processCancellationBarrier

public boolean processCancellationBarrier(org.apache.flink.runtime.io.network.api.CancelCheckpointMarker cancelBarrier)
                                   throws Exception

指定者:

processCancellationBarrier 在类中 CheckpointBarrierHandler

返回:

true if some blocked data should be unblocked/rolled over.

抛出:

Exception

processEndOfPartition

public boolean processEndOfPartition()
                              throws Exception

指定者:

processEndOfPartition 在类中 CheckpointBarrierHandler

返回:

true if some blocked data should be unblocked/rolled over.

抛出:

Exception

getLatestCheckpointId

public long getLatestCheckpointId()

指定者:

getLatestCheckpointId 在类中 CheckpointBarrierHandler

getAlignmentDurationNanos

public long getAlignmentDurationNanos()

指定者:

getAlignmentDurationNanos 在类中 CheckpointBarrierHandler

toString

public String toString()

覆盖:

toString 在类中 Object

checkpointSizeLimitExceeded

public void checkpointSizeLimitExceeded(long maxBufferedBytes)
                                 throws Exception

指定者:

checkpointSizeLimitExceeded 在类中 CheckpointBarrierHandler

抛出:

Exception