Is there a reason for using OpenJDK and not Sun's JDK? Also... I believe there were noted issues with the .17 JDK. I will look for a link and post if I can find.
Otherwise, the behaviour I have seen before. Hadoop is detaching from the JVM and stops seeing it. I think your problem lies in the JDK and not Hadoop. On May 12, 2011 at 8:12 PM, Adi <adi.pan...@gmail.com> wrote: >>> 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. >> >> > Yes those java processes are in fact running. And those error messages do > not always show up. Just sometimes. But the processes never get cleaned up. > > -Adi
