In spark release 0.7.1, I added support for running multiple worker processes on a single slave machine. I built it for performance testing multiple workers on a single machine in standalone mode.
Set the following in conf/spark-env.sh and bounce your cluster : export SPARK_WORKER_INSTANCES=3 This will create 3 worker processes on every slave machine. - Kalpit -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/Changing-number-of-workers-for-benchmarking-purposes-tp2606p4169.html Sent from the Apache Spark User List mailing list archive at Nabble.com.