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Posted to mapreduce-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2010/12/19 04:50:01 UTC

[jira] Created: (MAPREDUCE-2224) Synchronization bugs in JvmManager

Synchronization bugs in JvmManager
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                 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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