org.apache.flink.streaming.runtime.operators.sink.committables

Interface CheckpointCommittableManager<CommT>

Type Parameters:

CommT - type of the committable

@Internal
public interface CheckpointCommittableManager<CommT>

A CheckpointCommittableManager collects committables for one checkpoint across potentially multiple upstream subtasks.

While it collects committables from multiple upstream subtasks, it belongs to exactly one committer subtask.

Each upstream subtask of this particular checkpoint is represented by a SubtaskCommittableManager.

Method Summary

Modifier and Type	Method and Description
Collection<CommittableWithLineage<CommT>>	commit(Committer<CommT> committer) Commits all due committables if all respective committables of the specific subtask and checkpoint have been received.
long	getCheckpointId() Returns the checkpoint id in which the committables were created.
int	getNumberOfSubtasks() Returns the number of upstream subtasks belonging to the checkpoint.
CommittableSummary<CommT>	getSummary(int emittingSubtaskId, int emittingNumberOfSubtasks) Returns a summary of the current commit progress for the emitting subtask identified by the parameters.

Method Detail

getCheckpointId

long getCheckpointId()

Returns the checkpoint id in which the committables were created.

Returns:

checkpoint id

getNumberOfSubtasks

int getNumberOfSubtasks()

Returns the number of upstream subtasks belonging to the checkpoint.

getSummary

CommittableSummary<CommT> getSummary(int emittingSubtaskId,
                                     int emittingNumberOfSubtasks)

Returns a summary of the current commit progress for the emitting subtask identified by the parameters.

commit

Collection<CommittableWithLineage<CommT>> commit(Committer<CommT> committer)
                                          throws IOException,
                                                 InterruptedException

Commits all due committables if all respective committables of the specific subtask and checkpoint have been received.

Parameters:

committer - used to commit to the external system

Returns:

successfully committed committables with meta information

Throws:

IOException

InterruptedException