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From "Gera Shegalov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5044) Have AM trigger jstack on task attempts that timeout before killing them
Date Tue, 19 Nov 2013 20:41:25 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gera Shegalov updated MAPREDUCE-5044:
-------------------------------------

    Status: Patch Available  (was: Open)

> Have AM trigger jstack on task attempts that timeout before killing them
> ------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5044
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5044
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mr-am
>    Affects Versions: 2.1.0-beta
>            Reporter: Jason Lowe
>         Attachments: MAPREDUCE-5044.v01.patch
>
>
> When an AM expires a task attempt it would be nice if it triggered a jstack output via
SIGQUIT before killing the task attempt.  This would be invaluable for helping users debug
their hung tasks, especially if they do not have shell access to the nodes.



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