Re: Driver staggering task launch times

2015-08-14 Thread Philip Weaver
Ah, nevermind, I don't know anything about scheduling tasks in YARN. On Thu, Aug 13, 2015 at 11:03 PM, Ara Vartanian arav...@cs.wisc.edu wrote: I’m running on Yarn. On Aug 13, 2015, at 10:58 PM, Philip Weaver philip.wea...@gmail.com wrote: Are you running on mesos, yarn or standalone? If

Re: Driver staggering task launch times

2015-08-14 Thread Ara Vartanian
I’m running on Yarn. On Aug 13, 2015, at 10:58 PM, Philip Weaver philip.wea...@gmail.com wrote: Are you running on mesos, yarn or standalone? If you're on mesos, are you using coarse grain or fine grained mode? On Thu, Aug 13, 2015 at 10:13 PM, Ara Vartanian arav...@cs.wisc.edu

Driver staggering task launch times

2015-08-13 Thread Ara Vartanian
I’m observing an unusual situation where my step duration increases as I add further executors to my cluster. My algorithm is fully data parallelizable into a map phase, followed by a reduce step at the end that amounts to matrix addition. So I’ve kicked a cluster of, say, 100 executors with 4

Re: Driver staggering task launch times

2015-08-13 Thread Philip Weaver
Are you running on mesos, yarn or standalone? If you're on mesos, are you using coarse grain or fine grained mode? On Thu, Aug 13, 2015 at 10:13 PM, Ara Vartanian arav...@cs.wisc.edu wrote: I’m observing an unusual situation where my step duration increases as I add further executors to my