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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2242) Improve exception information on AM launch crashes
Date Tue, 08 Jul 2014 01:51:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14054410#comment-14054410
] 

Junping Du commented on YARN-2242:
----------------------------------

bq. you are swallowing diagnostics from the container. 
My bad. How could I miss this?
bq. Imagine AM container failing due to localization failure, we want to show the right diagnostics
there. The solution for this ticket is to change the message on the NM side, not the RM side.
As you mentioned, YARN-2013 already addressed on NM side. Here we have agreements above to
address on RM side separately to provide more diagnostic info.

> 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
>             Fix For: 2.6.0
>
>         Attachments: YARN-2242-070114-1.patch, YARN-2242-070114.patch, YARN-2242-070115-1.patch,
YARN-2242-070115-2.patch, YARN-2242-070115.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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