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Posted to mapreduce-dev@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2010/05/05 19:04:04 UTC

[jira] Created: (MAPREDUCE-1755) Zombie tasks kept alive by logging system

Zombie tasks kept alive by logging system
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                 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


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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