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https://issues.apache.org/jira/browse/MAPREDUCE-2080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-2080.
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Resolution: Fixed
Likely stale by now.
> Reducer JVM process hangs
> -------------------------
>
> Key: MAPREDUCE-2080
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2080
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.20.2
> Reporter: Ted Yu
> Attachments: Child-not-exiting.stack
>
>
> We use cdh3b2
> After reducer took more than 600 seconds to report to tasktracker,
> tasktracker tried to kill it.
> However reducer JVM process hung.
> Attaching stack trace of reducer.
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