Sunil, You confirmed my understanding. I got the understanding by reading the docs and haven’t really tried 2.8 or 3.0-alphal.
My situation is that I am in a multi-tenant env, and got several very powerful machines with expensive licenses to run a particular linux job, let’s say Job_A. But the job is executed infrequently, so I want to let other jobs to use the machines when Job_A is not running. In the meaning time, I am not powerful enough to force all other jobs to be preemptable. As matter of fact, I know they have Hadoop jobs inserting into sql-server, or just pure linux jobs that are not preemptable in nature. So preempt jobs is not an option for me. I hope it makes sense. Frank From: Sunil Govind [mailto:sunil.gov...@gmail.com] Sent: Thursday, October 06, 2016 2:15 PM To: Frank Luo <j...@merkleinc.com>; user@hadoop.apache.org Subject: Re: how to add a shareable node label? HI Frank Ideally those containers will be preempted if there are unsatisfied demand for "configured label". I could explain this: "labelA" has few empty resources. All nodes under "default" label is used. Hence a new application which is submitted to "default" label has to wait. But if "labelA" is non-exclusive and there are some free resources, this new application can run on "labelA". However if there are some more new apps submitted to "labelA", and if there are no more resources available in "labelA", then it may preempt containers from the app which was sharing containers earlier. May be you could share some more information so tht it may become more clear. Also I suppose you are running this in hadoop 3 alpha1 release. please correct me if I m wrong. Thanks Sunil On Thu, Oct 6, 2016 at 9:44 PM Frank Luo <j...@merkleinc.com<mailto:j...@merkleinc.com>> wrote: Thanks Sunil. > 3. If there is any future ask for those resources , we will preempt the non > labeled apps and give them back to labeled apps. Unfortunately, I am still not able to use it, because of the preemptive behavior. The jobs that steals labelled resources are not preemptable, and I’d rather waiting instead of killing. From: Sunil Govind [mailto:sunil.gov...@gmail.com<mailto:sunil.gov...@gmail.com>] Sent: Thursday, October 06, 2016 1:59 AM To: Frank Luo <j...@merkleinc.com<mailto:j...@merkleinc.com>>; user@hadoop.apache.org<mailto:user@hadoop.apache.org> Subject: Re: how to add a shareable node label? Hi Frank I think as of today this is not possible. You could try and experience the "non-exlusive" feature of node-label which will officially come in 2.8 soon. Or you can try it in "Hadoop 3 alpha1" release too if its fine to check. YARN-3214<https://issues.apache.org/jira/browse/YARN-3214> has the details for the nodelabel sharing concept. Thanks Sunil On Wed, Oct 5, 2016 at 8:14 PM Frank Luo <j...@merkleinc.com<mailto:j...@merkleinc.com>> wrote: Sunil, thanks for responding. So is there any way to dedicate one kind of jobs to certain machines, then having those machines be shared if no dedicated job running? From: Sunil Govind [mailto:sunil.gov...@gmail.com<mailto:sunil.gov...@gmail.com>] Sent: Wednesday, October 05, 2016 12:50 AM To: Frank Luo <j...@merkleinc.com<mailto:j...@merkleinc.com>>; user@hadoop.apache.org<mailto:user@hadoop.apache.org>; u...@yarn.apache.org<mailto:u...@yarn.apache.org> Subject: Re: how to add a shareable node label? Hi Frank, As far as I checked, all labels are "exclusive" in 2.7. In upcoming 2.8 release, we can get "non-exclusive" or sharable node labels. Thanks Sunil On Wed, Oct 5, 2016 at 8:40 AM Frank Luo <j...@merkleinc.com<mailto:j...@merkleinc.com>> wrote: I am using Hadoop 2.7.3, when I run: $ yarn rmadmin -addToClusterNodeLabels "Label1(exclusive=false)" I got an error as: … addToClusterNodeLabels: java.io.IOException: label name should only contains {0-9, a-z, A-Z, -, _} and should not started with {-,_} If I just use “Label1”, it will work fine, but I want a shareable one. Anyone knows a better way to do it? Access the Q2 2016 Digital Marketing Report for a fresh set of trends and benchmarks in digital marketing<http://www2.merkleinc.com/l/47252/2016-07-26/47gt7c> Download our latest report titled “The Case for Change: Exploring the Myths of Customer-Centric Transformation” <http://www2.merkleinc.com/l/47252/2016-08-04/4b9p7c> This email and any attachments transmitted with it are intended for use by the intended recipient(s) only. If you have received this email in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not keep, use, disclose, copy or distribute this email without the author’s prior permission. We take precautions to minimize the risk of transmitting software viruses, but we advise you to perform your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. The information contained in this communication may be confidential and may be subject to the attorney-client privilege.
