org.apache.flink.runtime.client

Class JobClient

java.lang.Object

org.apache.flink.runtime.client.JobClient

public class JobClient
extends Object

The JobClient bridges between the JobManager's asynchronous actor messages and the synchronous method calls to trigger.

Constructor Summary

Constructors

Constructor and Description
JobClient()

Method Summary

Modifier and Type	Method and Description
static akka.actor.ActorSystem	startJobClientActorSystem(org.apache.flink.configuration.Configuration config)
static org.apache.flink.api.common.JobExecutionResult	submitJobAndWait(akka.actor.ActorSystem actorSystem, LeaderRetrievalService leaderRetrievalService, JobGraph jobGraph, scala.concurrent.duration.FiniteDuration timeout, boolean sysoutLogUpdates, ClassLoader classLoader) Sends a [[JobGraph]] to the JobClient actor specified by jobClient which submits it then to the JobManager.
static void	submitJobDetached(ActorGateway jobManagerGateway, JobGraph jobGraph, scala.concurrent.duration.FiniteDuration timeout, ClassLoader classLoader) Submits a job in detached mode.
static void	uploadJarFiles(JobGraph jobGraph, ActorGateway jobManagerGateway, scala.concurrent.duration.FiniteDuration timeout) Uploads the specified jar files of the [[JobGraph]] jobGraph to the BlobServer of the JobManager.

Methods inherited from class java.lang.Object

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

Constructor Detail

JobClient

public JobClient()

Method Detail

startJobClientActorSystem

public static akka.actor.ActorSystem startJobClientActorSystem(org.apache.flink.configuration.Configuration config)
                                                        throws IOException

Throws:

IOException

submitJobAndWait

public static org.apache.flink.api.common.JobExecutionResult submitJobAndWait(akka.actor.ActorSystem actorSystem,
                                                                              LeaderRetrievalService leaderRetrievalService,
                                                                              JobGraph jobGraph,
                                                                              scala.concurrent.duration.FiniteDuration timeout,
                                                                              boolean sysoutLogUpdates,
                                                                              ClassLoader classLoader)
                                                                       throws JobExecutionException

Sends a [[JobGraph]] to the JobClient actor specified by jobClient which submits it then to the JobManager. The method blocks until the job has finished or the JobManager is no longer alive. In the former case, the [[SerializedJobExecutionResult]] is returned and in the latter case a [[JobExecutionException]] is thrown.

Parameters:

actorSystem - The actor system that performs the communication.

leaderRetrievalService - Leader retrieval service which used to find the current leading JobManager

jobGraph - JobGraph describing the Flink job

timeout - Timeout for futures

sysoutLogUpdates - prints log updates to system out if true

Returns:

The job execution result

Throws:

JobExecutionException - Thrown if the job execution fails.

submitJobDetached

public static void submitJobDetached(ActorGateway jobManagerGateway,
                                     JobGraph jobGraph,
                                     scala.concurrent.duration.FiniteDuration timeout,
                                     ClassLoader classLoader)
                              throws JobExecutionException

Submits a job in detached mode. The method sends the JobGraph to the JobManager and waits for the answer whether the job could be started or not.

Parameters:

jobManagerGateway - Gateway to the JobManager which will execute the jobs

jobGraph - The job

timeout - Timeout in which the JobManager must have responded.

Throws:

JobExecutionException

uploadJarFiles

public static void uploadJarFiles(JobGraph jobGraph,
                                  ActorGateway jobManagerGateway,
                                  scala.concurrent.duration.FiniteDuration timeout)
                           throws IOException

Uploads the specified jar files of the [[JobGraph]] jobGraph to the BlobServer of the JobManager. The respective port is retrieved from the JobManager. This function issues a blocking call.

Parameters:

jobGraph - Flink job containing the information about the required jars

jobManagerGateway - Gateway to the JobManager.

timeout - Timeout for futures

Throws:

IOException - Thrown, if the file upload to the JobManager failed.