RE: major Spark performance problem

2014-03-09 Thread Livni, Dana
...@spark.incubator.apache.org Subject: Re: major Spark performance problem Hi, There is also an option to run spark applications on top of mesos in fine grained mode, then it is possible for fair scheduling (applications will run in parallel and mesos is responsible for scheduling all tasks) so

Re: major Spark performance problem

2014-03-09 Thread Matei Zaharia
- From: elyast [mailto:lukasz.jastrzeb...@gmail.com] Sent: Friday, March 07, 2014 20:01 To: u...@spark.incubator.apache.org Subject: Re: major Spark performance problem Hi, There is also an option to run spark applications on top of mesos in fine grained mode, then it is possible for fair

Re: major Spark performance problem

2014-03-07 Thread elyast
in may not be faster however the benefit is the fair scheduling (small jobs will not be stuck by the big ones). Best regards Lukasz Jastrzebski -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/major-Spark-performance-problem-tp2364p2403.html Sent from

Re: major Spark performance problem

2014-03-06 Thread Christopher Nguyen
Dana, When you run multiple applications under Spark, and if each application takes up the entire cluster resources, it is expected that one will block the other completely, thus you're seeing that the wall time add together sequentially. In addition there is some overhead associated with