org.apache.flink.streaming.runtime.io

Interface CheckpointBarrierBehaviourController

All Known Implementing Classes:

AlignedController, AlternatingController, UnalignedController

@Internal
public interface CheckpointBarrierBehaviourController

Controls when the checkpoint should be actually triggered.

Method Summary

Modifier and Type	Method and Description
void	abortPendingCheckpoint(long cancelledId, org.apache.flink.runtime.checkpoint.CheckpointException exception)
void	barrierReceived(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo, org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier) Invoked per every received CheckpointBarrier.
void	obsoleteBarrierReceived(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo, org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier)
boolean	postProcessLastBarrier(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo, org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier) Invoked once per checkpoint, after the last invocation of barrierReceived(InputChannelInfo, CheckpointBarrier) for that given checkpoint.
boolean	preProcessFirstBarrier(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo, org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier) Invoked once per checkpoint, before the first invocation of barrierReceived(InputChannelInfo, CheckpointBarrier) for that given checkpoint.

Method Detail

barrierReceived

void barrierReceived(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo,
                     org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier)

Invoked per every received CheckpointBarrier.

preProcessFirstBarrier

boolean preProcessFirstBarrier(org.apache.flink.runtime.checkpoint.channel.InputChannelInfo channelInfo,
                               org.apache.flink.runtime.io.network.api.CheckpointBarrier barrier)
                        throws IOException,
                               org.apache.flink.runtime.checkpoint.CheckpointException

Invoked once per checkpoint, before the first invocation of barrierReceived(InputChannelInfo, CheckpointBarrier) for that given checkpoint.

Returns:

true if checkpoint should be triggered.

Throws:

IOException

org.apache.flink.runtime.checkpoint.CheckpointException

postProcessLastBarrier

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

Invoked once per checkpoint, after the last invocation of barrierReceived(InputChannelInfo, CheckpointBarrier) for that given checkpoint.

Returns:

true if checkpoint should be triggered.

Throws:

IOException

abortPendingCheckpoint

void abortPendingCheckpoint(long cancelledId,
                            org.apache.flink.runtime.checkpoint.CheckpointException exception)
                     throws IOException

Throws:

IOException

obsoleteBarrierReceived

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

Throws:

IOException