Li Lu updated YARN-2242:

    Attachment: YARN-2242-070114.patch

This patch disables the confusing output of ShellExitCodeException, and "points 
to" the logs generated by each container attempt. For console users, the new 
exception information reports the URL where the application is traced. Then the 
exception information reminds users to click on the links in the same page to 
check out exception details. 

> 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.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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