Tsuyoshi OZAWA commented on YARN-2013:

Thank you for review and comments, Junping and Li!

[~djp], yes, I think we should similar thing with LinuxContainerExecutor too. 
I'll add tests which covers both cases. 
[~gtCarrera], I'll do NM side-changes as Junping mentioned.

> The diagnostics is always the ExitCodeException stack when the container 
> crashes
> --------------------------------------------------------------------------------
>                 Key: YARN-2013
>                 URL: https://issues.apache.org/jira/browse/YARN-2013
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Zhijie Shen
>            Assignee: Tsuyoshi OZAWA
>         Attachments: YARN-2013.1.patch, YARN-2013.2.patch, 
> YARN-2013.3-2.patch, YARN-2013.3.patch
> When a container crashes, ExitCodeException will be thrown from Shell. 
> Default/LinuxContainerExecutor captures the exception, put the exception 
> stack into the diagnostic. Therefore, the exception stack is always the same. 
> {code}
>         String diagnostics = "Exception from container-launch: \n"
>             + StringUtils.stringifyException(e) + "\n" + shExec.getOutput();
>         container.handle(new ContainerDiagnosticsUpdateEvent(containerId,
>             diagnostics));
> {code}
> In addition, it seems that the exception always has a empty message as 
> there's no message from stderr. Hence the diagnostics is not of much use for 
> users to analyze the reason of container crash.

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