org.apache.flink.runtime.highavailability.nonha

Class AbstractNonHaServices

java.lang.Object

org.apache.flink.runtime.highavailability.nonha.AbstractNonHaServices

All Implemented Interfaces:

AutoCloseable, HighAvailabilityServices

Direct Known Subclasses:

EmbeddedHaServices, StandaloneHaServices

public abstract class AbstractNonHaServices
extends Object
implements HighAvailabilityServices

Abstract base class for non high-availability services. This class returns the standalone variants for the checkpoint recovery factory, the submitted job graph store, the running jobs registry and the blob store.

Field Summary

Fields

Modifier and Type	Field and Description
protected Object	lock

Fields inherited from interface org.apache.flink.runtime.highavailability.HighAvailabilityServices

DEFAULT_JOB_ID, DEFAULT_LEADER_ID

Constructor Summary

Constructors

Constructor and Description
AbstractNonHaServices()

Method Summary

Modifier and Type	Method and Description
protected void	checkNotShutdown()
void	close() Closes the high availability services, releasing all resources.
void	closeAndCleanupAllData() Closes the high availability services (releasing all resources) and deletes all data stored by these services in external stores.
BlobStore	createBlobStore() Creates the BLOB store in which BLOBs are stored in a highly-available fashion.
CheckpointRecoveryFactory	getCheckpointRecoveryFactory() Gets the checkpoint recovery factory for the job manager
RunningJobsRegistry	getRunningJobsRegistry() Gets the registry that holds information about whether jobs are currently running.
SubmittedJobGraphStore	getSubmittedJobGraphStore() Gets the submitted job graph store for the job manager
protected boolean	isShutDown()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.runtime.highavailability.HighAvailabilityServices

getDispatcherLeaderElectionService, getDispatcherLeaderRetriever, getJobManagerLeaderElectionService, getJobManagerLeaderRetriever, getJobManagerLeaderRetriever, getResourceManagerLeaderElectionService, getResourceManagerLeaderRetriever

Field Detail

lock

protected final Object lock

Constructor Detail

AbstractNonHaServices

public AbstractNonHaServices()

Method Detail

getCheckpointRecoveryFactory

public CheckpointRecoveryFactory getCheckpointRecoveryFactory()

Description copied from interface: HighAvailabilityServices

Gets the checkpoint recovery factory for the job manager

Specified by:

getCheckpointRecoveryFactory in interface HighAvailabilityServices

Returns:

Checkpoint recovery factory

getSubmittedJobGraphStore

public SubmittedJobGraphStore getSubmittedJobGraphStore()
                                                 throws Exception

Description copied from interface: HighAvailabilityServices

Gets the submitted job graph store for the job manager

Specified by:

getSubmittedJobGraphStore in interface HighAvailabilityServices

Returns:

Submitted job graph store

Throws:

Exception - if the submitted job graph store could not be created

getRunningJobsRegistry

public RunningJobsRegistry getRunningJobsRegistry()
                                           throws Exception

Description copied from interface: HighAvailabilityServices

Gets the registry that holds information about whether jobs are currently running.

Specified by:

getRunningJobsRegistry in interface HighAvailabilityServices

Returns:

Running job registry to retrieve running jobs

Throws:

Exception

createBlobStore

public BlobStore createBlobStore()
                          throws IOException

Description copied from interface: HighAvailabilityServices

Creates the BLOB store in which BLOBs are stored in a highly-available fashion.

Specified by:

createBlobStore in interface HighAvailabilityServices

Returns:

Blob store

Throws:

IOException - if the blob store could not be created

close

public void close()
           throws Exception

Description copied from interface: HighAvailabilityServices

Closes the high availability services, releasing all resources.

This method does not delete or clean up any data stored in external stores (file systems, ZooKeeper, etc). Another instance of the high availability services will be able to recover the job.

If an exception occurs during closing services, this method will attempt to continue closing other services and report exceptions only after all services have been attempted to be closed.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface HighAvailabilityServices

Throws:

Exception - Thrown, if an exception occurred while closing these services.

closeAndCleanupAllData

public void closeAndCleanupAllData()
                            throws Exception

Description copied from interface: HighAvailabilityServices

Closes the high availability services (releasing all resources) and deletes all data stored by these services in external stores.

After this method was called, the any job or session that was managed by these high availability services will be unrecoverable.

If an exception occurs during cleanup, this method will attempt to continue the cleanup and report exceptions only after all cleanup steps have been attempted.

Specified by:

closeAndCleanupAllData in interface HighAvailabilityServices

Throws:

Exception - Thrown, if an exception occurred while closing these services or cleaning up data stored by them.

checkNotShutdown

protected void checkNotShutdown()

isShutDown

protected boolean isShutDown()