After you obtain pid, you can use jstack to see what the Child process was doing.
What hadoop version are you using ? On Wed, Aug 25, 2010 at 7:28 PM, C J <[email protected]> wrote: > Thanks for your reply. > > Some of these child tasks belong to successful jobs. I am wondering why > they are > still hanging there for long finished jobs. > > > > > > ________________________________ > From: Ted Yu <[email protected]> > To: [email protected] > Sent: Wed, August 25, 2010 4:17:38 PM > Subject: Re: Child processes on datanodes/task trackers > > Use jps to find out pid of the Child. > Then use this to find out which job the Child belongs to: > ps aux | grep <pid> > > On Wed, Aug 25, 2010 at 12:20 PM, C J <[email protected]> wrote: > > > Hi, > > > > I wanted to know why I see running Child processes on my datanodes even > > though > > there is no job running at that time. Are these left over from failed > > attempts? > > > > Is there anything I can do to keep these clean? > > > > Thanks, > > Deepika > > > > > > > > > > >
