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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-2224) Synchronization bugs in JvmManager
Date Sun, 19 Dec 2010 03:50:01 GMT
Synchronization bugs in JvmManager

                 Key: MAPREDUCE-2224
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2224
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: tasktracker
    Affects Versions: 0.22.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
            Priority: Critical
             Fix For: 0.22.0

JvmManager.JvmManagerForType has several HashMap members that are inconsistently synchronized.
I've seen sporadic NPEs in the 0.20 version of this code which has similar bugs.

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