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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4272) Create a JobClient for job control and monitoring
Date Tue, 22 Nov 2016 15:30:58 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15687038#comment-15687038
] 

ASF GitHub Bot commented on FLINK-4272:
---------------------------------------

Github user mxm commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2732#discussion_r89139969
  
    --- Diff: flink-clients/src/main/java/org/apache/flink/client/RemoteExecutor.java ---
    @@ -207,14 +207,23 @@ public JobExecutionResult executePlanWithJars(JobWithJars program)
throws Except
     				shutDownAtEnd = false;
     			}
     
    -			try {
    -				return client.run(program, defaultParallelism).getJobExecutionResult();
    -			}
    -			finally {
    -				if (shutDownAtEnd) {
    -					stop();
    -				}
    -			}
    +			final JobClient jobClient = client.run(program, defaultParallelism);
    +
    +			jobClient.addFinalizer(
    +				new Runnable() {
    +					@Override
    +					public void run() {
    +						if (shutDownAtEnd) {
    --- End diff --
    
    This closure should be fine since Java demands the variable to be final.


> Create a JobClient for job control and monitoring 
> --------------------------------------------------
>
>                 Key: FLINK-4272
>                 URL: https://issues.apache.org/jira/browse/FLINK-4272
>             Project: Flink
>          Issue Type: New Feature
>          Components: Client
>            Reporter: Maximilian Michels
>            Assignee: Maximilian Michels
>            Priority: Minor
>             Fix For: 1.2.0
>
>
> The aim of this new features is to expose a client to the user which allows to cancel
a running job, retrieve accumulators for a running job, or perform other actions in the future.
Let's call it {{JobClient}} for now (although this clashes with the existing JobClient class
which could be renamed to JobClientActorUtils instead).
> The new client should be returned from the {{ClusterClient}} class upon job submission.
The client should also be instantiatable by the users to retrieve the JobClient with a JobID.
> We should expose the new JobClient to the Java and Scala APIs using a new method on the
{{ExecutionEnvironment}} / {{StreamExecutionEnvironment}} called {{executeWithControl()}}
(perhaps we can find a better name).



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