org.apache.flink.streaming.runtime.io.checkpointing

类 SingleCheckpointBarrierHandler

java.lang.Object

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

org.apache.flink.streaming.runtime.io.checkpointing.SingleCheckpointBarrierHandler

所有已实现的接口:

Closeable, AutoCloseable

@Internal
 @NotThreadSafe
public class SingleCheckpointBarrierHandler
extends CheckpointBarrierHandler

SingleCheckpointBarrierHandler is used for triggering checkpoint while reading the first barrier and keeping track of the number of received barriers and consumed barriers. It can handle/track just single checkpoint at a time. The behaviour when to actually trigger the checkpoint and what the CheckpointableInput should do is controlled by BarrierHandlerState.

方法概要

限定符和类型	方法和说明
static SingleCheckpointBarrierHandler	aligned(String taskName, org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint, org.apache.flink.util.clock.Clock clock, int numOpenChannels, BarrierAlignmentUtil.DelayableTimer registerTimer, boolean enableCheckpointAfterTasksFinished, org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)
static SingleCheckpointBarrierHandler	alternating(String taskName, org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint, SubtaskCheckpointCoordinator checkpointCoordinator, org.apache.flink.util.clock.Clock clock, int numOpenChannels, BarrierAlignmentUtil.DelayableTimer registerTimer, boolean enableCheckpointAfterTasksFinished, org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)
void	close()
static SingleCheckpointBarrierHandler	createUnalignedCheckpointBarrierHandler(SubtaskCheckpointCoordinator checkpointCoordinator, String taskName, org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint, org.apache.flink.util.clock.Clock clock, boolean enableCheckpointsAfterTasksFinish, org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)
CompletableFuture<Void>	getAllBarriersReceivedFuture(long checkpointId)
long	getLatestCheckpointId()
protected boolean	isCheckpointPending()
protected void	markCheckpointAlignedAndTransformState(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo alignedChannel, org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier, org.apache.flink.util.function.FunctionWithException<org.apache.flink.streaming.runtime.io.checkpointing.BarrierHandlerState,org.apache.flink.streaming.runtime.io.checkpointing.BarrierHandlerState,Exception> stateTransformer)
void	processBarrier(org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier, org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo, boolean isRpcTriggered)
void	processBarrierAnnouncement(org.apache.flink.runtime.io.network.api.CheckpointBarrier announcedBarrier, int sequenceNumber, org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
void	processCancellationBarrier(org.apache.flink.runtime.io.network.api.CancelCheckpointMarker cancelBarrier, org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
void	processEndOfPartition(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
String	toString()
static SingleCheckpointBarrierHandler	unaligned(String taskName, org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint, SubtaskCheckpointCoordinator checkpointCoordinator, org.apache.flink.util.clock.Clock clock, int numOpenChannels, BarrierAlignmentUtil.DelayableTimer registerTimer, boolean enableCheckpointAfterTasksFinished, org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)

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

addProcessedBytes, getAlignmentDurationNanos, getCheckpointStartDelayNanos, getClock, markAlignmentEnd, markAlignmentEnd, markAlignmentStart, markAlignmentStartAndEnd, notifyAbort, notifyAbortOnCancellationBarrier, notifyCheckpoint, resetAlignment

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

createUnalignedCheckpointBarrierHandler

@VisibleForTesting
public static SingleCheckpointBarrierHandler createUnalignedCheckpointBarrierHandler(SubtaskCheckpointCoordinator checkpointCoordinator,
                                                                                                        String taskName,
                                                                                                        org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint,
                                                                                                        org.apache.flink.util.clock.Clock clock,
                                                                                                        boolean enableCheckpointsAfterTasksFinish,
                                                                                                        org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)

unaligned

public static SingleCheckpointBarrierHandler unaligned(String taskName,
                                                       org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint,
                                                       SubtaskCheckpointCoordinator checkpointCoordinator,
                                                       org.apache.flink.util.clock.Clock clock,
                                                       int numOpenChannels,
                                                       BarrierAlignmentUtil.DelayableTimer registerTimer,
                                                       boolean enableCheckpointAfterTasksFinished,
                                                       org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)

aligned

public static SingleCheckpointBarrierHandler aligned(String taskName,
                                                     org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint,
                                                     org.apache.flink.util.clock.Clock clock,
                                                     int numOpenChannels,
                                                     BarrierAlignmentUtil.DelayableTimer registerTimer,
                                                     boolean enableCheckpointAfterTasksFinished,
                                                     org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)

alternating

public static SingleCheckpointBarrierHandler alternating(String taskName,
                                                         org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask toNotifyOnCheckpoint,
                                                         SubtaskCheckpointCoordinator checkpointCoordinator,
                                                         org.apache.flink.util.clock.Clock clock,
                                                         int numOpenChannels,
                                                         BarrierAlignmentUtil.DelayableTimer registerTimer,
                                                         boolean enableCheckpointAfterTasksFinished,
                                                         org.apache.flink.runtime.io.network.partition.consumer.CheckpointableInput... inputs)

processBarrier

public void processBarrier(org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier,
                           org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo,
                           boolean isRpcTriggered)
                    throws IOException

指定者:

processBarrier 在类中 CheckpointBarrierHandler

抛出:

IOException

markCheckpointAlignedAndTransformState

protected void markCheckpointAlignedAndTransformState(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo alignedChannel,
                                                      org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier,
                                                      org.apache.flink.util.function.FunctionWithException<org.apache.flink.streaming.runtime.io.checkpointing.BarrierHandlerState,org.apache.flink.streaming.runtime.io.checkpointing.BarrierHandlerState,Exception> stateTransformer)
                                               throws IOException

抛出:

IOException

processBarrierAnnouncement

public void processBarrierAnnouncement(org.apache.flink.runtime.io.network.api.CheckpointBarrier announcedBarrier,
                                       int sequenceNumber,
                                       org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
                                throws IOException

指定者:

processBarrierAnnouncement 在类中 CheckpointBarrierHandler

抛出:

IOException

processCancellationBarrier

public void processCancellationBarrier(org.apache.flink.runtime.io.network.api.CancelCheckpointMarker cancelBarrier,
                                       org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
                                throws IOException

指定者:

processCancellationBarrier 在类中 CheckpointBarrierHandler

抛出:

IOException

processEndOfPartition

public void processEndOfPartition(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo)
                           throws IOException

指定者:

processEndOfPartition 在类中 CheckpointBarrierHandler

抛出:

IOException

getLatestCheckpointId

public long getLatestCheckpointId()

指定者:

getLatestCheckpointId 在类中 CheckpointBarrierHandler

close

public void close()
           throws IOException

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

覆盖:

close 在类中 CheckpointBarrierHandler

抛出:

IOException

isCheckpointPending

protected boolean isCheckpointPending()

指定者:

isCheckpointPending 在类中 CheckpointBarrierHandler

getAllBarriersReceivedFuture

public CompletableFuture<Void> getAllBarriersReceivedFuture(long checkpointId)

覆盖:

getAllBarriersReceivedFuture 在类中 CheckpointBarrierHandler

toString

public String toString()

覆盖:

toString 在类中 Object