I should have mentioned. I was trying this on FairScheduler. I can try CapacityScheduler and see if that works. But this is pretty easy to reproduce as I described in the problem.
2012/12/14 Harsh J <[email protected]> > Perhaps you can try YARN-80's > yarn.scheduler.capacity.node-locality-delay set to 1 for your > CapacityScheduler (are you using this or the Fifo)? > > On Fri, Dec 14, 2012 at 1:37 AM, lohit <[email protected]> wrote: > > I am running hadoop-2.0.3 alpha branch. > > Right now I am trying TestDFSIO, where I would like to have even > > distribution of tasks. > > As soon as I submit job RM tends to allocate as many containers as > possible > > from subset of nodes. > > > > 2012/12/13 Thomas Graves <[email protected]> > > > >> What kind of job are you running? What version of YARN? > >> > >> Tom > >> > >> On 12/13/12 12:24 AM, "lohit" <[email protected]> wrote: > >> > >> >Hi Devs, > >> > > >> >I am running few experiments on YARN. On a 50 node cluster I run only > one > >> >job. > >> >If I kick off job with 150 tasks, I would expect on an average 3 tasks > in > >> >containers per node. > >> >But I see many nodes end up having 29-30 containers spawned and many > >> >without any tasks at all. > >> >Do I have to use some kind of parameter (delayed scheduling) to achieve > >> >even distribution? > >> > > >> >-- > >> >Have a Nice Day! > >> >Lohit > >> > >> > > > > > > -- > > Have a Nice Day! > > Lohit > > > > -- > Harsh J > -- Have a Nice Day! Lohit
