Yes the options are not that configurable yet but I think it's not hard to change it.
I have a patch out actually specifically able to configure amount of cpus per executor in coarse grain mode, and hopefully merged next release. I think the open question now is for fine grain mode can we limit the number of maximum concurrent executors, and I think we can definitely just add a new option like spark.mesos.executor.max to cap it. I'll file a jira and hopefully to get this change in soon too. Tim On Tue, Aug 11, 2015 at 6:21 AM, Haripriya Ayyalasomayajula < aharipriy...@gmail.com> wrote: > Spark evolved as an example framework for Mesos - thats how I know it. It > is surprising to see that the options provided by mesos in this case are > less. Tweaking the source code, haven't done it yet but I would love to see > what options could be there! > > On Tue, Aug 11, 2015 at 5:42 AM, Jerry Lam <chiling...@gmail.com> wrote: > >> My experience with Mesos + Spark is not great. I saw one executor with 30 >> CPU and the other executor with 6. So I don't think you can easily >> configure it without some tweaking at the source code. >> >> Sent from my iPad >> >> On 2015-08-11, at 2:38, Haripriya Ayyalasomayajula < >> aharipriy...@gmail.com> wrote: >> >> Hi Tim, >> >> Spark on Yarn allows us to do it using --num-executors and >> --executor_cores commandline arguments. I just got a chance to look at a >> similar spark user list mail, but no answer yet. So does mesos allow >> setting the number of executors and cores? Is there a default number it >> assumes? >> >> On Mon, Jan 5, 2015 at 5:07 PM, Tim Chen <t...@mesosphere.io> wrote: >> >>> Forgot to hit reply-all. >>> >>> ---------- Forwarded message ---------- >>> From: Tim Chen <t...@mesosphere.io> >>> Date: Sun, Jan 4, 2015 at 10:46 PM >>> Subject: Re: Controlling number of executors on Mesos vs YARN >>> To: mvle <m...@us.ibm.com> >>> >>> >>> Hi Mike, >>> >>> You're correct there is no such setting in for Mesos coarse grain mode, >>> since the assumption is that each node is launched with one container and >>> Spark is launching multiple tasks in that container. >>> >>> In fine-grain mode there isn't a setting like that, as it currently will >>> launch an executor as long as it satisfies the minimum container resource >>> requirement. >>> >>> I've created a JIRA earlier about capping the number of executors or >>> better distribute the # of executors launched in each node. Since the >>> decision of choosing what node to launch containers is all in the Spark >>> scheduler side, it's very easy to modify it. >>> >>> Btw, what's the configuration to set the # of executors on YARN side? >>> >>> Thanks, >>> >>> Tim >>> >>> >>> >>> On Sun, Jan 4, 2015 at 9:37 PM, mvle <m...@us.ibm.com> wrote: >>> >>>> I'm trying to compare the performance of Spark running on Mesos vs YARN. >>>> However, I am having problems being able to configure the Spark >>>> workload to >>>> run in a similar way on Mesos and YARN. >>>> >>>> When running Spark on YARN, you can specify the number of executors per >>>> node. So if I have a node with 4 CPUs, I can specify 6 executors on that >>>> node. When running Spark on Mesos, there doesn't seem to be an >>>> equivalent >>>> way to specify this. In Mesos, you can somewhat force this by >>>> specifying the >>>> number of CPU resources to be 6 when running the slave daemon. However, >>>> this >>>> seems to be a static configuration of the Mesos cluster rather something >>>> that can be configured in the Spark framework. >>>> >>>> So here is my question: >>>> >>>> For Spark on Mesos, am I correct that there is no way to control the >>>> number >>>> of executors per node (assuming an idle cluster)? For Spark on Mesos >>>> coarse-grained mode, there is a way to specify max_cores but that is >>>> still >>>> not equivalent to specifying the number of executors per node as when >>>> Spark >>>> is run on YARN. >>>> >>>> If I am correct, then it seems Spark might be at a disadvantage running >>>> on >>>> Mesos compared to YARN (since it lacks the fine tuning ability provided >>>> by >>>> YARN). >>>> >>>> Thanks, >>>> Mike >>>> >>>> >>>> >>>> -- >>>> View this message in context: >>>> http://apache-spark-user-list.1001560.n3.nabble.com/Controlling-number-of-executors-on-Mesos-vs-YARN-tp20966.html >>>> Sent from the Apache Spark User List mailing list archive at Nabble.com >>>> . >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: user-unsubscr...@spark.apache.org >>>> For additional commands, e-mail: user-h...@spark.apache.org >>>> >>>> >>> >>> >> >> >> -- >> Regards, >> Haripriya Ayyalasomayajula >> >> > > > -- > Regards, > Haripriya Ayyalasomayajula > >
