org.apache.flink.runtime.jobmaster

Class JobManagerRunner

java.lang.Object

org.apache.flink.runtime.jobmaster.JobManagerRunner

All Implemented Interfaces:

AutoCloseable, OnCompletionActions, LeaderContender, AutoCloseableAsync

public class JobManagerRunner
extends Object
implements LeaderContender, OnCompletionActions, AutoCloseableAsync

The runner for the job manager. It deals with job level leader election and make underlying job manager properly reacted.

Constructor Summary

Constructors

Constructor and Description
JobManagerRunner(JobGraph jobGraph, JobMasterServiceFactory jobMasterFactory, HighAvailabilityServices haServices, LibraryCacheManager libraryCacheManager, Executor executor, FatalErrorHandler fatalErrorHandler) Exceptions that occur while creating the JobManager or JobManagerRunner are directly thrown and not reported to the given FatalErrorHandler.

Method Summary

Modifier and Type	Method and Description
CompletableFuture<Void>	closeAsync() Trigger the closing of the resource and return the corresponding close future.
String	getAddress() Returns the address of the LeaderContender under which other instances can connect to it.
JobGraph	getJobGraph()
CompletableFuture<JobMasterGateway>	getLeaderGatewayFuture()
CompletableFuture<ArchivedExecutionGraph>	getResultFuture()
void	grantLeadership(UUID leaderSessionID) Callback method which is called by the LeaderElectionService upon selecting this instance as the new leader.
void	handleError(Exception exception) Callback method which is called by LeaderElectionService in case of an error in the service thread.
void	jobFinishedByOther() Job completion notification triggered by self.
void	jobMasterFailed(Throwable cause) The JobMaster failed while executing the job.
void	jobReachedGloballyTerminalState(ArchivedExecutionGraph executionGraph) Job completion notification triggered by JobManager.
void	revokeLeadership() Callback method which is called by the LeaderElectionService upon revoking the leadership of a former leader.
void	start()

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.util.AutoCloseableAsync

close

Constructor Detail

JobManagerRunner

public JobManagerRunner(JobGraph jobGraph,
                        JobMasterServiceFactory jobMasterFactory,
                        HighAvailabilityServices haServices,
                        LibraryCacheManager libraryCacheManager,
                        Executor executor,
                        FatalErrorHandler fatalErrorHandler)
                 throws Exception

Exceptions that occur while creating the JobManager or JobManagerRunner are directly thrown and not reported to the given FatalErrorHandler.

Throws:

Exception - Thrown if the runner cannot be set up, because either one of the required services could not be started, or the Job could not be initialized.

Method Detail

getLeaderGatewayFuture

public CompletableFuture<JobMasterGateway> getLeaderGatewayFuture()

getJobGraph

public JobGraph getJobGraph()

getResultFuture

public CompletableFuture<ArchivedExecutionGraph> getResultFuture()

start

public void start()
           throws Exception

Throws:

Exception

closeAsync

public CompletableFuture<Void> closeAsync()

Description copied from interface: AutoCloseableAsync

Trigger the closing of the resource and return the corresponding close future.

Specified by:

closeAsync in interface AutoCloseableAsync

Returns:

Future which is completed once the resource has been closed

jobReachedGloballyTerminalState

public void jobReachedGloballyTerminalState(ArchivedExecutionGraph executionGraph)

Job completion notification triggered by JobManager.

Specified by:

jobReachedGloballyTerminalState in interface OnCompletionActions

Parameters:

executionGraph - serializable execution graph

jobFinishedByOther

public void jobFinishedByOther()

Job completion notification triggered by self.

Specified by:

jobFinishedByOther in interface OnCompletionActions

jobMasterFailed

public void jobMasterFailed(Throwable cause)

Description copied from interface: OnCompletionActions

The JobMaster failed while executing the job.

Specified by:

jobMasterFailed in interface OnCompletionActions

grantLeadership

public void grantLeadership(UUID leaderSessionID)

Description copied from interface: LeaderContender

Callback method which is called by the LeaderElectionService upon selecting this instance as the new leader. The method is called with the new leader session ID.

Specified by:

grantLeadership in interface LeaderContender

Parameters:

leaderSessionID - New leader session ID

revokeLeadership

public void revokeLeadership()

Description copied from interface: LeaderContender

Callback method which is called by the LeaderElectionService upon revoking the leadership of a former leader. This might happen in case that multiple contenders have been granted leadership.

Specified by:

revokeLeadership in interface LeaderContender

getAddress

public String getAddress()

Description copied from interface: LeaderContender

Returns the address of the LeaderContender under which other instances can connect to it.

Specified by:

getAddress in interface LeaderContender

Returns:

Address of this contender.

handleError

public void handleError(Exception exception)

Description copied from interface: LeaderContender

Callback method which is called by LeaderElectionService in case of an error in the service thread.

Specified by:

handleError in interface LeaderContender

Parameters:

exception - Caught exception