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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-426) Race condition in LaunchTaskAction and KillJobAction
Date Thu, 17 Jul 2014 17:41:05 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-426?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer resolved MAPREDUCE-426.
----------------------------------------

    Resolution: Fixed

I'm going to close this as a stale issue. There have been a lot of race conditions fixed in
this area and suspect this is one of them.

> Race condition in LaunchTaskAction and KillJobAction
> ----------------------------------------------------
>
>                 Key: MAPREDUCE-426
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-426
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Koji Noguchi
>            Priority: Minor
>
> One task wasn't killed when its job was killed. 
> On the TaskTracker log, it showed, 
> 2007-08-21 17:02:29,219 INFO org.apache.hadoop.mapred.TaskTracker: LaunchTaskAction:
task_0133_r_000080_2    <**************
> 2007-08-21 17:02:29,232 INFO org.apache.hadoop.mapred.TaskTracker: Received 'KillJobAction'
for job: job_0131         <**************
> 2007-08-21 17:02:29,233 INFO org.apache.hadoop.mapred.TaskRunner: task_0131_m_000077_0
done; removing files.
> 2007-08-21 17:02:29,376 INFO org.apache.hadoop.mapred.TaskTracker: Received 'KillJobAction'
for job: job_0133
> 2007-08-21 17:02:29,376 INFO org.apache.hadoop.mapred.TaskRunner: task_0133_r_000060_0
done; removing files.
> 2007-08-21 17:02:29,378 INFO org.apache.hadoop.mapred.TaskRunner: task_0133_r_000071_2
done; removing files.
> 2007-08-21 17:02:29,381 INFO org.apache.hadoop.mapred.TaskRunner: task_0133_r_000066_1
done; removing files.
> 2007-08-21 17:02:31,272 INFO org.apache.hadoop.mapred.TaskTracker: task_0133_r_000080_2
0.0% reduce > copy >
> 2007-08-21 17:02:32,275 INFO org.apache.hadoop.mapred.TaskTracker: task_0133_r_000080_2
0.0% reduce > copy >
> 2007-08-21 17:02:33,277 INFO org.apache.hadoop.mapred.TaskTracker: task_0133_r_000080_2
0.0% reduce > copy >
> ...
> [task_0133_r_000080_2 continue to run]
> Of course the JobTracker kept on complaining
> 2007-08-22 19:06:37,880 INFO org.apache.hadoop.mapred.JobTracker: Serious problem.  While
updating status, cannot find taskid task_0133_r_000080_2
> 2007-08-22 19:06:38,124 INFO org.apache.hadoop.mapred.JobTracker: Serious problem.  While
updating status, cannot find taskid task_0133_r_000080_2
> 2007-08-22 19:06:47,885 INFO org.apache.hadoop.mapred.JobTracker: Serious problem.  While
updating status, cannot find taskid task_0133_r_000080_2



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