ProcessTree can try and kill a "null" POD
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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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