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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-2224) Synchronization bugs in JvmManager
Date Sat, 12 Feb 2011 14:31:10 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12993909#comment-12993909
] 

Hudson commented on MAPREDUCE-2224:
-----------------------------------

Integrated in Hadoop-Mapreduce-22-branch #33 (See [https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-22-branch/33/])
    

> 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
>
>         Attachments: mapreduce-2224-cdh3.txt, mapreduce-2224.txt, mapreduce-2224.txt,
mapreduce-2224.txt, mapreduce-2224.txt
>
>
> 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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