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, HighAvailabilityServices

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 and Description
EmbeddedHaServices(Executor executor)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes the high availability services, releasing all resources.
LeaderElectionService	getJobManagerLeaderElectionService(JobID jobID) Gets the leader election service for the given job.
LeaderRetrievalService	getJobManagerLeaderRetriever(JobID jobID) Gets the leader retriever for the job JobMaster which is responsible for the given job
LeaderElectionService	getResourceManagerLeaderElectionService() Gets the leader election service 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, closeAndCleanupAllData, createBlobStore, getCheckpointRecoveryFactory, getRunningJobsRegistry, getSubmittedJobGraphStore, isShutDown

Methods inherited from class java.lang.Object

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

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.

getResourceManagerLeaderElectionService

public LeaderElectionService getResourceManagerLeaderElectionService()

Description copied from interface: HighAvailabilityServices

Gets the leader election service for the cluster's resource manager.

Returns:

Leader election service for the resource manager leader election

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

getJobManagerLeaderElectionService

public LeaderElectionService getJobManagerLeaderElectionService(JobID jobID)

Description copied from interface: HighAvailabilityServices

Gets the leader election service for the given job.

Parameters:

jobID - The identifier of the job running the election.

Returns:

Leader election service for the job manager leader election

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.