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https://issues.apache.org/jira/browse/HADOOP-5781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12707231#action_12707231
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Ravi Gummadi commented on HADOOP-5781:
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Is this happening with trunk(even after HADOOP-5488) ? Would you please provide
the stack trace ?
> ProcessTree can try and kill a "null" POD
> -----------------------------------------
>
> Key: HADOOP-5781
> URL: https://issues.apache.org/jira/browse/HADOOP-5781
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.21.0
> Reporter: Steve Loughran
> Priority: Minor
>
> Saw this in a test run, while trying to shut down a TaskTracker
> [sf-startdaemon-debug] 09/05/07 16:42:42 [Map-events fetcher for all reduce
> tasks on tracker_morzine.hpl.hp.com:localhost/127.0.0.1:36239] INFO
> mapred.TaskTracker : Shutting down: Map-events fetcher for all reduce tasks
> on tracker_morzine.hpl.hp.com:localhost/127.0.0.1:36239
> [sf-startdaemon-debug] 09/05/07 16:42:42 [TerminatorThread] WARN
> util.ProcessTree : Error executing shell command
> org.apache.hadoop.util.Shell$ExitCodeException: ERROR: garbage process ID
> "-null".
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