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From mxm <...@git.apache.org>
Subject [GitHub] flink pull request #2313: [FLINK-4273] Modify JobClient to attach to running...
Date Tue, 23 Aug 2016 16:58:33 GMT
Github user mxm commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2313#discussion_r75907814
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/client/JobClient.java ---
    @@ -243,46 +247,46 @@ public static JobExecutionResult awaitJobResult(JobListeningContext
listeningCon
     		final JobID jobID = listeningContext.getJobID();
     		final ActorRef jobClientActor = listeningContext.getJobClientActor();
     		final Future<Object> jobSubmissionFuture = listeningContext.getJobResultFuture();
    +		final FiniteDuration askTimeout = listeningContext.getTimeout();
     		// retrieves class loader if necessary
     		final ClassLoader classLoader = listeningContext.getClassLoader();
     
    +		// wait for the future which holds the result to be ready
    +		// ping the JobClientActor from time to time to check if it is still running
     		while (!jobSubmissionFuture.isCompleted()) {
     			try {
    -				Thread.sleep(250);
    -			} catch (InterruptedException e) {
    -				throw new JobExecutionException(jobID, "Interrupted while waiting for execution result.",
e);
    -			}
    -
    -			try {
    -				Await.result(
    -					Patterns.ask(
    -						jobClientActor,
    -						JobClientMessages.getPing(),
    -						Timeout.durationToTimeout(AkkaUtils.getDefaultTimeout())),
    -					AkkaUtils.getDefaultTimeout());
    +				Await.ready(jobSubmissionFuture, askTimeout);
     			} catch (Exception e) {
    --- End diff --
    
    Ah, I thought you were commenting on the inner catch block. Yes, it makes sense to catch
only `TimeoutException` and `InterruptedException` here for `Await.ready`. `Await.result`
actually throws Exception.


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