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https://issues.apache.org/jira/browse/HADOOP-1374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley updated HADOOP-1374:
----------------------------------

      Component/s: mapred
    Fix Version/s:     (was: 0.14.0)
                   0.13.0
         Assignee: Arun C Murthy

Ok, I got this reproducing on Linux. It looks like it is related to the event 
log array out of bounds exception. In particular, I get:

>bin/hadoop job -events job_0001
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
        at org.apache.hadoop.mapred.JobClient.run(JobClient.java:748)
        at org.apache.hadoop.util.ToolBase.doMain(ToolBase.java:189)
        at org.apache.hadoop.mapred.JobClient.main(JobClient.java:806)


> TaskTracker falls into an infinite loop.
> ----------------------------------------
>
>                 Key: HADOOP-1374
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1374
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.12.3
>            Reporter: Konstantin Shvachko
>         Assigned To: Arun C Murthy
>             Fix For: 0.13.0
>
>
> All maps had been completed successfully. I had only one reduce task during 
> which
> TaskTracker infinitely outputs:
> 07/05/15 19:35:41 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% 
> reduce > copy (4 of 8 at 0.00 MB/s) > 
> 07/05/15 19:35:42 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% 
> reduce > copy (4 of 8 at 0.00 MB/s) > 
> 07/05/15 19:35:43 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% 
> reduce > copy (4 of 8 at 0.00 MB/s) > 
> 07/05/15 19:35:44 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% 
> reduce > copy (4 of 8 at 0.00 MB/s) > 
> 07/05/15 19:35:45 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% 
> reduce > copy (4 of 8 at 0.00 MB/s) > 
> JobTracker does not log anything about task task_0001_r_000000_0 except for
> 07/05/15 19:49:01 INFO mapred.JobTracker: Adding task 'task_0001_r_000000_0' 
> to tip tip_0001_r_000000, for tracker 'tracker_my-host.com:50050'

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