Hong Zhiguo commented on YARN-1872:

Hi,  Vinod, this is not just a test failure. It occurs frequently in out real 
cluster. When this happens, the application remains running forever until it's 
killed manually.

And I don't think the fix is just a work around before YARN-1902 get in. It 
makes DistributedShell taking less assumption about outside, and more tolerant 
to unexpected behavior of outside.

> TestDistributedShell occasionally fails in trunk
> ------------------------------------------------
>                 Key: YARN-1872
>                 URL: https://issues.apache.org/jira/browse/YARN-1872
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Hong Zhiguo
>         Attachments: TestDistributedShell.out, YARN-1872.patch
> From https://builds.apache.org/job/Hadoop-Yarn-trunk/520/console :
> TestDistributedShell#testDSShellWithCustomLogPropertyFile failed and 
> TestDistributedShell#testDSShell timed out.

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