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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5044) Have AM trigger jstack on task attempts that timeout before killing them
Date Wed, 25 May 2016 21:33:13 GMT

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

Eric Payne updated MAPREDUCE-5044:
----------------------------------
    Status: Open  (was: Patch Available)

It looks like the pre-commit build faild:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6528/console
{quote}
Slave went offline during the build
ERROR: Connection was broken: java.io.IOException: Sorry, this connection is closed.
{quote}

Cancelling patch and re-Submitting patch

> 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
>            Assignee: Gera Shegalov
>         Attachments: MAPREDUCE-5044.008.patch, MAPREDUCE-5044.009.patch, MAPREDUCE-5044.010.patch,
MAPREDUCE-5044.011.patch, MAPREDUCE-5044.v01.patch, MAPREDUCE-5044.v02.patch, MAPREDUCE-5044.v03.patch,
MAPREDUCE-5044.v04.patch, MAPREDUCE-5044.v05.patch, MAPREDUCE-5044.v06.patch, MAPREDUCE-5044.v07.local.patch,
Screen Shot 2013-11-12 at 1.05.32 PM.png, Screen Shot 2013-11-12 at 1.06.04 PM.png
>
>
> 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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