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https://issues.apache.org/jira/browse/MAPREDUCE-1755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated MAPREDUCE-1755:
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Attachment: jstack.txt
As reqeusted, a jstack.
> Zombie tasks kept alive by logging system
> -----------------------------------------
>
> Key: MAPREDUCE-1755
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1755
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.2
> Reporter: Allen Wittenauer
> Attachments: jstack.txt, stderr.txt, syslog.txt, tightloop.txt
>
>
> I'm currently looking at a task that, as far as the task tracker is
> concerned, is dead. Like long long long ago dead. It was a failed task that
> ran out of heap. Rather than just kill it, I thought I would see what it was
> doing, since it was clearly using system resources. It would appear the
> system is trying to log but failing. I'm guessing we're missing an error
> condition and not doing the appropriate thing. See the comments for more.
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