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