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https://issues.apache.org/jira/browse/FLINK-8328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16308121#comment-16308121
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ASF GitHub Bot commented on FLINK-8328:
---------------------------------------

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

    https://github.com/apache/flink/pull/5215#discussion_r159226314
  
    --- Diff: 
flink-yarn/src/main/java/org/apache/flink/yarn/cli/FlinkYarnSessionCli.java ---
    @@ -660,7 +570,25 @@ public int run(
                                        "yarn application -kill " + 
applicationId.getOpt());
                                yarnCluster.disconnect();
                        } else {
    -                           runInteractiveCli(yarnCluster, true);
    +                           ScheduledThreadPoolExecutor 
scheduledExecutorService = new ScheduledThreadPoolExecutor(1);
    +
    +                           try (YarnApplicationStatusMonitor 
yarnApplicationStatusMonitor = new YarnApplicationStatusMonitor(
    +                                           yarnDescriptor.getYarnClient(),
    +                                           yarnCluster.getApplicationId(),
    +                                           new 
ScheduledExecutorServiceAdapter(scheduledExecutorService))) {
    +                                   runInteractiveCli(
    +                                           yarnCluster,
    +                                           yarnApplicationStatusMonitor,
    +                                           true);
    +                           } catch (Exception e) {
    --- End diff --
    
    Closing `YarnApplicationStatusMonitor` should not throw any checked 
exceptions. If you change the signature, this catch block won't be needed.


> Pull Yarn ApplicationStatus polling out of YarnClusterClient
> ------------------------------------------------------------
>
>                 Key: FLINK-8328
>                 URL: https://issues.apache.org/jira/browse/FLINK-8328
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Client
>    Affects Versions: 1.5.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>              Labels: flip-6
>             Fix For: 1.5.0
>
>
> In order to make the {{FlinkYarnSessionCli}} work with Flip-6, we have to 
> pull the Yarn {{ApplicationStatus}} polling out of the {{YarnClusterClient}}. 
> I propose to introduce a dedicated {{YarnApplicationStatusMonitor}}. This has 
> also the benefit of separating concerns better.



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