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https://issues.apache.org/jira/browse/YARN-2242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14049598#comment-14049598
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Li Lu commented on YARN-2242:
-----------------------------

Hi [~djp], sure I can definitely do that. One small question is, since this 
patch is too trivial, could you please give some suggestions on how to build or 
modify an unit test for it? I'm hoping this part is already test somewhere in 
the existing UTs, and some modification would suffice. Thanks! 

> Improve exception information on AM launch crashes
> --------------------------------------------------
>
>                 Key: YARN-2242
>                 URL: https://issues.apache.org/jira/browse/YARN-2242
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Li Lu
>            Assignee: Li Lu
>         Attachments: YARN-2242-070114-1.patch, YARN-2242-070114.patch
>
>
> Now on each time AM Container crashes during launch, both the console and the 
> webpage UI only report a ShellExitCodeExecption. This is not only unhelpful, 
> but sometimes confusing. With the help of log aggregator, container logs are 
> actually aggregated, and can be very helpful for debugging. One possible way 
> to improve the whole process is to send a "pointer" to the aggregated logs to 
> the programmer when reporting exception information. 



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