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Posted to mapreduce-dev@hadoop.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2010/09/19 23:32:33 UTC

[jira] Created: (MAPREDUCE-2080) Reducer JVM process hangs

Reducer JVM process hangs
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                 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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