Hi Ved, Here is a blog for fair scheduler preemption, https://blog.cloudera.com/blog/2018/06/yarn-fairscheduler-preemption-deep-dive/. In terms of performance, I'm not aware of any document to compare both schedulers. The easiest way to do it yourself is using SLS( https://hadoop.apache.org/docs/r3.1.1/hadoop-sls/SchedulerLoadSimulator.html). SLS focuses on the resource manager rather than anything else, like Node managers, which is a good thing since FS and CS share the same NM implantation. I would be surprise their performances drastically differ from each other for the most common use cases, but their performances would be very different in some cases.
Best, Yufei `This is not a contribution` On Mon, Dec 31, 2018 at 3:36 AM Ved Gaurav <ved.gau...@gslab.com> wrote: > I have read some blogs about difference between them but I am not able to > understand the difference. How both works , preemption in capacity vs > preemption in fair scheduler , How both performs in terms of only one queue > and hierarchical queues ,what are the practical scenarios where we can use > them etc ? > > Any documentation if available will be nice. > > Regards, > Ved Prakash >