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Posted to common-dev@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2009/05/07 17:47:30 UTC

[jira] Commented: (HADOOP-5781) ProcessTree can try and kill a "null" POD

    [ https://issues.apache.org/jira/browse/HADOOP-5781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12706944#action_12706944 ] 

Steve Loughran commented on HADOOP-5781:
----------------------------------------

Full output is the kill usage manual. 

-probably best for the methods to do some parameter checking, possbly raising NPEs to track this down

[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$ExitCodeException: ERROR: garbage process ID "-null".
[sf-startdaemon-debug] Usage:
[sf-startdaemon-debug]   kill pid ...              Send SIGTERM to every process listed.
[sf-startdaemon-debug]   kill signal pid ...       Send a signal to every process listed.
[sf-startdaemon-debug]   kill -s signal pid ...    Send a signal to every process listed.
[sf-startdaemon-debug]   kill -l                   List all signal names.
[sf-startdaemon-debug]   kill -L                   List all signal names in a nice table.
[sf-startdaemon-debug]   kill -l signal            Convert between signal numbers and names.
[sf-startdaemon-debug] 09/05/07 16:42:42 [TerminatorThread] INFO util.ProcessTree : Killing all processes in the process group null with SIGTERM. Exit code 1
[sf-startdaemon-debug] 09/05/07 16:42:42 [org.apache.hadoop.hdfs.server.namenode.FSNamesystem$ReplicationMonitor@826cdb7] WARN namenode.FSNamesystem : ReplicationMonitor thread received InterruptedException.java.lang.InterruptedException: sleep interrupted
[sf-startdaemon-debug] 09/05/07 16:42:42 [org.apache.hadoop.hdfs

> 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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