>> Hadoop 0.21.0 with some patches. Hadoop 0.21.0 doesn't get much use, so I'm not sure how much help I can be.
> 2011-05-12 13:52:04,147 WARN org.apache.hadoop.mapreduce.util.ProcessTree: > Error executing shell command > org.apache.hadoop.util.Shell$ExitCodeException: kill -12545: No such process Your logs showed that Hadoop tried to kill processes but the kill command claimed they didn't exist. The next time you see this problem, can you check the logs and see if any of the PIDs that appear in the logs are in fact still running? A more likely scenario is that Hadoop's tracking of child VMs is getting out of sync, but I'm not sure what would cause that. -Joey -- Joseph Echeverria Cloudera, Inc. 443.305.9434
