Nope. Like I said, all I did was change mapred.fairscheduler.assignmultiple to false on my cluster and that fixed the issue.
On Wed, Jan 11, 2012 at 5:31 AM, Marek Miglinski <mmiglin...@seven.com>wrote: > > That's not the case, I've even removed > hadoop-fairscheduler-0.20.2-cdh3u2.jar from hadoop lib folder and > fair-scheduler.xml from hadoop conf folder and it didn't help... Any ideas? > > ________________________________ > From: Bai Shen [baishen.li...@gmail.com] > Sent: Tuesday, January 10, 2012 9:35 PM > To: mapreduce-user@hadoop.apache.org > Subject: Re: Capacity Scheduler problem > > Turn off the fairscheduler multiple task assign setting. I just had the > same problem with my cluster. > > On Tue, Jan 10, 2012 at 11:34 AM, Marek Miglinski <mmiglin...@seven.com > <mailto:mmiglin...@seven.com>> wrote: > Hello guys, > > 1. I have concern with my 3 node cluster, I run capacity scheduler with 4 > queues and one has 30% of cluster resources, the problem is that when I > schedule a job, all tasks are assigned to one single node which takes all > of it's mappers and works quite slow. Are there any settings for > mapred/capacity scheduler to assign mappers on all nodes by even number of > tasks? > > 2. I've set my capacity-scheduler.xml settings > "mapred.capacity-scheduler.queue.job1.capacity" for all queues as wanted > but jobtracker doesn't reallocate resources from free queues if only one is > working, why? > > > Thanks, > Marek M. > >
