Package org.apache.flink.runtime.highavailability.nonha.embedded

Class EmbeddedHaServices

java.lang.Object

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

org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedHaServices

All Implemented Interfaces:

AutoCloseable, GloballyCleanableResource, ClientHighAvailabilityServices, HighAvailabilityServices

Direct Known Subclasses:

EmbeddedHaServicesWithLeadershipControl

public class EmbeddedHaServices
extends AbstractNonHaServices

An implementation of the HighAvailabilityServices for the non-high-availability case where all participants (ResourceManager, JobManagers, TaskManagers) run in the same process.

This implementation has no dependencies on any external services. It returns a fix pre-configured ResourceManager, and stores checkpoints and metadata simply on the heap or on a local file system and therefore in a storage without guarantees.

Field Summary

Fields inherited from class org.apache.flink.runtime.highavailability.nonha.AbstractNonHaServices

lock

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

DEFAULT_JOB_ID, DEFAULT_LEADER_ID

Constructor Summary

Constructors

Constructor	Description
EmbeddedHaServices(Executor executor)

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the high availability services, releasing all resources.
LeaderElection	getClusterRestEndpointLeaderElection()	Gets the LeaderElection for the cluster's rest endpoint.
LeaderRetrievalService	getClusterRestEndpointLeaderRetriever()	Get the leader retriever for the cluster's rest endpoint.
LeaderElection	getDispatcherLeaderElection()	Gets the LeaderElection for the cluster's dispatcher.
LeaderRetrievalService	getDispatcherLeaderRetriever()	Gets the leader retriever for the dispatcher.
LeaderElection	getJobManagerLeaderElection(JobID jobID)	Gets the LeaderElection for the job with the given JobID.
LeaderRetrievalService	getJobManagerLeaderRetriever(JobID jobID)	Gets the leader retriever for the job JobMaster which is responsible for the given job.
LeaderRetrievalService	getJobManagerLeaderRetriever(JobID jobID, String defaultJobManagerAddress)	Gets the leader retriever for the job JobMaster which is responsible for the given job.
LeaderElection	getResourceManagerLeaderElection()	Gets the LeaderElection for the cluster's resource manager.
LeaderRetrievalService	getResourceManagerLeaderRetriever()	Gets the leader retriever for the cluster's resource manager.

Methods inherited from class org.apache.flink.runtime.highavailability.nonha.AbstractNonHaServices

checkNotShutdown, cleanupAllData, createBlobStore, getCheckpointRecoveryFactory, getJobGraphStore, getJobResultStore, 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

closeWithOptionalClean, getWebMonitorLeaderElection, getWebMonitorLeaderRetriever, globalCleanupAsync

Constructor Detail

EmbeddedHaServices

public EmbeddedHaServices(Executor executor)

Method Detail

getResourceManagerLeaderRetriever

public LeaderRetrievalService getResourceManagerLeaderRetriever()

Description copied from interface: HighAvailabilityServices

Gets the leader retriever for the cluster's resource manager.

getDispatcherLeaderRetriever

public LeaderRetrievalService getDispatcherLeaderRetriever()

Description copied from interface: HighAvailabilityServices

Gets the leader retriever for the dispatcher. This leader retrieval service is not always accessible.

getResourceManagerLeaderElection

public LeaderElection getResourceManagerLeaderElection()

Description copied from interface: HighAvailabilityServices

Gets the LeaderElection for the cluster's resource manager.

getDispatcherLeaderElection

public LeaderElection getDispatcherLeaderElection()

Description copied from interface: HighAvailabilityServices

Gets the LeaderElection for the cluster's dispatcher.

getJobManagerLeaderRetriever

public LeaderRetrievalService getJobManagerLeaderRetriever(JobID jobID)

Description copied from interface: HighAvailabilityServices

Gets the leader retriever for the job JobMaster which is responsible for the given job.

Parameters:

jobID - The identifier of the job.

Returns:

Leader retrieval service to retrieve the job manager for the given job

getJobManagerLeaderRetriever

public LeaderRetrievalService getJobManagerLeaderRetriever(JobID jobID,
                                                           String defaultJobManagerAddress)

Description copied from interface: HighAvailabilityServices

Gets the leader retriever for the job JobMaster which is responsible for the given job.

Parameters:

jobID - The identifier of the job.

defaultJobManagerAddress - JobManager address which will be returned by a static leader retrieval service.

Returns:

Leader retrieval service to retrieve the job manager for the given job

getClusterRestEndpointLeaderRetriever

public LeaderRetrievalService getClusterRestEndpointLeaderRetriever()

Description copied from interface: ClientHighAvailabilityServices

Get the leader retriever for the cluster's rest endpoint.

Returns:

the leader retriever for cluster's rest endpoint.

getJobManagerLeaderElection

public LeaderElection getJobManagerLeaderElection(JobID jobID)

Description copied from interface: HighAvailabilityServices

Gets the LeaderElection for the job with the given JobID.

getClusterRestEndpointLeaderElection

public LeaderElection getClusterRestEndpointLeaderElection()

Description copied from interface: HighAvailabilityServices

Gets the LeaderElection for the cluster's rest endpoint.

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

Overrides:

close in class AbstractNonHaServices

Throws:

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