[ http://issues.apache.org/jira/browse/HADOOP-627?page=all ]

Owen O'Malley updated HADOOP-627:
---------------------------------

           Status: Patch Available  (was: Open)
    Fix Version/s: 0.8.0
         Assignee: Nigel Daley  (was: Owen O'Malley)

> MiniMRCluster missing synchronization
> -------------------------------------
>
>                 Key: HADOOP-627
>                 URL: http://issues.apache.org/jira/browse/HADOOP-627
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.7.2
>            Reporter: Nigel Daley
>         Assigned To: Nigel Daley
>             Fix For: 0.8.0
>
>         Attachments: minimrcluster.patch
>
>
> org.apache.hadoop.mapred.MiniMRCluster$TaskTrackerRunner contains (at least) 
> 2 instance variables that are read by another thread: isInitialized and 
> isDead.  These should be declared volatile or proper synchronization should 
> be used for their access.

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