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From Sandy Ryza <sandy.r...@cloudera.com>
Subject Re: Limit on total jobs running using fair scheduler
Date Tue, 19 Nov 2013 22:12:08 GMT
Unfortunately, this is not possible in the MR1 fair scheduler without
setting the jobs for individual pools.  In MR2, fair scheduler hierarchical
queues will allow setting maxRunningApps at the top of the hierarchy, which
would have the effect you're looking for.


On Tue, Nov 19, 2013 at 2:01 PM, Omkar Joshi <ojoshi@hortonworks.com> wrote:

> Not sure about the fair scheduler but in capacity scheduler you can
> achieve this by controlling number of jobs/applications per queue.
> Thanks,
> Omkar Joshi
> *Hortonworks Inc.* <http://www.hortonworks.com>
> On Tue, Nov 19, 2013 at 3:26 AM, Ivan Tretyakov <
> itretyakov@griddynamics.com> wrote:
>> Hello!
>> We are using CDH 4.1.1 (Version: 2.0.0-mr1-cdh4.1.1) and fair-scheduler.
>> We need to limit total number of jobs which can run at the same time on
>> cluster.
>> I can see maxRunningJobs options but it sets limit for pool or user.
>> We wouldn't like to limit each pool or user we just need to set limit on
>> total number of jobs running.
>> Is it possible to do it using fair scheduler?
>> Can capacity scheduler help here?
>> Maybe there are other options to achieve the goal?
>> Thanks in advance!
>> --
>> Best Regards
>> Ivan Tretyakov
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