org.apache.flink.streaming.runtime.io

类 CheckpointBarrierTracker

java.lang.Object

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

org.apache.flink.streaming.runtime.io.CheckpointBarrierTracker

所有已实现的接口:

Closeable, AutoCloseable

@Internal
public class CheckpointBarrierTracker
extends CheckpointBarrierHandler

The CheckpointBarrierTracker keeps track of what checkpoint barriers have been received from which input channels. Once it has observed all checkpoint barriers for a checkpoint ID, it notifies its listener of a completed checkpoint.

Unlike the CheckpointBarrierAligner, the BarrierTracker does not block the input channels that have sent barriers, so it cannot be used to gain "exactly-once" processing guarantees. It can, however, be used to gain "at least once" processing guarantees.

NOTE: This implementation strictly assumes that newer checkpoints have higher checkpoint IDs.

构造器概要

构造器

构造器和说明
CheckpointBarrierTracker(int totalNumberOfInputChannels, org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable toNotifyOnCheckpoint)

方法概要

限定符和类型	方法和说明
long	getLatestCheckpointId()
boolean	isCheckpointPending()
void	processBarrier(org.apache.flink.runtime.io.network.api.CheckpointBarrier receivedBarrier, org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
void	processCancellationBarrier(org.apache.flink.runtime.io.network.api.CancelCheckpointMarker cancelBarrier)
void	processEndOfPartition()

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

abortPendingCheckpoint, close, executeInTaskThread, getAlignmentDurationNanos, getAllBarriersReceivedFuture, getBufferReceivedListener, getCheckpointStartDelayNanos, hasInflightData, isBlocked, markCheckpointStart, notifyAbort, notifyAbortOnCancellationBarrier, notifyCheckpoint, releaseBlocksAndResetBarriers

从类继承的方法 java.lang.Object

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

构造器详细资料

CheckpointBarrierTracker

public CheckpointBarrierTracker(int totalNumberOfInputChannels,
                                org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable toNotifyOnCheckpoint)

方法详细资料

processBarrier

public void processBarrier(org.apache.flink.runtime.io.network.api.CheckpointBarrier receivedBarrier,
                           org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
                    throws Exception

指定者:

processBarrier 在类中 CheckpointBarrierHandler

抛出:

Exception

processCancellationBarrier

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

指定者:

processCancellationBarrier 在类中 CheckpointBarrierHandler

抛出:

Exception

processEndOfPartition

public void processEndOfPartition()
                           throws Exception

指定者:

processEndOfPartition 在类中 CheckpointBarrierHandler

抛出:

Exception

getLatestCheckpointId

public long getLatestCheckpointId()

指定者:

getLatestCheckpointId 在类中 CheckpointBarrierHandler

isCheckpointPending

public boolean isCheckpointPending()

指定者:

isCheckpointPending 在类中 CheckpointBarrierHandler