task tracker times out cleaning big job
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         Key: HADOOP-180
         URL: http://issues.apache.org/jira/browse/HADOOP-180
     Project: Hadoop
        Type: Bug

  Components: mapred  
    Versions: 0.1.1    
    Reporter: Owen O'Malley
 Assigned to: Owen O'Malley 


After completing a big job (63,920 maps, 1880 reduces, 188 nodes), lots of the 
TaskTrackers timed out because the task cleanup is handled by the same thread 
as the heartbeats.

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