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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: tightloop.txt
stderr.txt
syslog.txt
Stripping out the threading info (pollsys, etc) shows that the tasks are in a
tight loop around manipulating the log files (see tightloop.txt).
I'm also attaching the syslog and stderr logs from this task to see if that
helps to figure out where we're missing a thread needing to get killed.
> 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: 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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