Package org.apache.flink.runtime.checkpoint

Class PerJobCheckpointRecoveryFactory<T extends CompletedCheckpointStore>

java.lang.Object

org.apache.flink.runtime.checkpoint.PerJobCheckpointRecoveryFactory<T>

All Implemented Interfaces:

CheckpointRecoveryFactory

public class PerJobCheckpointRecoveryFactory<T extends CompletedCheckpointStore>
extends Object
implements CheckpointRecoveryFactory

Simple CheckpointRecoveryFactory which creates and keeps separate CompletedCheckpointStore and CheckpointIDCounter for each JobID.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	PerJobCheckpointRecoveryFactory.CheckpointStoreRecoveryHelper<StoreType extends CompletedCheckpointStore>	Restores or creates a CompletedCheckpointStore, optionally using an existing one.

Constructor Summary

Constructors

Constructor	Description
PerJobCheckpointRecoveryFactory(PerJobCheckpointRecoveryFactory.CheckpointStoreRecoveryHelper<T> checkpointStoreRecoveryHelper)
PerJobCheckpointRecoveryFactory(PerJobCheckpointRecoveryFactory.CheckpointStoreRecoveryHelper<T> checkpointStoreRecoveryHelper, Supplier<CheckpointIDCounter> checkpointIDCounterPerJobFactory)

Method Summary

Modifier and Type	Method	Description
CheckpointIDCounter	createCheckpointIDCounter(JobID jobId)	Creates a CheckpointIDCounter instance for a job.
CompletedCheckpointStore	createRecoveredCompletedCheckpointStore(JobID jobId, int maxNumberOfCheckpointsToRetain, SharedStateRegistryFactory sharedStateRegistryFactory, Executor ioExecutor, RecoveryClaimMode recoveryClaimMode)	Creates a RECOVERED CompletedCheckpointStore instance for a job.
static <T extends CompletedCheckpointStore> CheckpointRecoveryFactory	withoutCheckpointStoreRecovery(IntFunction<T> storeFn)

Methods inherited from class java.lang.Object

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

Constructor Detail

PerJobCheckpointRecoveryFactory

public PerJobCheckpointRecoveryFactory(PerJobCheckpointRecoveryFactory.CheckpointStoreRecoveryHelper<T> checkpointStoreRecoveryHelper)

PerJobCheckpointRecoveryFactory

public PerJobCheckpointRecoveryFactory(PerJobCheckpointRecoveryFactory.CheckpointStoreRecoveryHelper<T> checkpointStoreRecoveryHelper,
                                       Supplier<CheckpointIDCounter> checkpointIDCounterPerJobFactory)

Method Detail

withoutCheckpointStoreRecovery

@VisibleForTesting
public static <T extends CompletedCheckpointStore> CheckpointRecoveryFactory withoutCheckpointStoreRecovery(IntFunction<T> storeFn)

createRecoveredCompletedCheckpointStore

public CompletedCheckpointStore createRecoveredCompletedCheckpointStore(JobID jobId,
                                                                        int maxNumberOfCheckpointsToRetain,
                                                                        SharedStateRegistryFactory sharedStateRegistryFactory,
                                                                        Executor ioExecutor,
                                                                        RecoveryClaimMode recoveryClaimMode)

Description copied from interface: CheckpointRecoveryFactory

Creates a RECOVERED CompletedCheckpointStore instance for a job. In this context, RECOVERED means, that if we already have completed checkpoints from previous runs, we should use them as the initial state.

Specified by:

createRecoveredCompletedCheckpointStore in interface CheckpointRecoveryFactory

Parameters:

jobId - Job ID to recover checkpoints for

maxNumberOfCheckpointsToRetain - Maximum number of checkpoints to retain

sharedStateRegistryFactory - Simple factory to produce SharedStateRegistry objects.

ioExecutor - Executor used to run (async) deletes.

recoveryClaimMode - the claim mode with which the job is restoring.

Returns:

CompletedCheckpointStore instance for the job

createCheckpointIDCounter

public CheckpointIDCounter createCheckpointIDCounter(JobID jobId)

Description copied from interface: CheckpointRecoveryFactory

Creates a CheckpointIDCounter instance for a job.

Specified by:

createCheckpointIDCounter in interface CheckpointRecoveryFactory

Parameters:

jobId - Job ID to recover checkpoints for

Returns:

CheckpointIDCounter instance for the job