Awesome thanks a TON. It works There is a clash in the UI port initially but looks like it creates a second UI port at 4041 for the second user wanting to use the spark-shell 14/10/01 17:34:38 INFO JettyUtils: Failed to create UI at port, 4040. Trying again.14/10/01 17:34:38 INFO JettyUtils: Error was: Failure(java.net.BindException: Address already in use)14/10/01 17:34:38 INFO SparkUI: Started SparkUI at http://hadoop02:4041 sanjay From: Matei Zaharia <matei.zaha...@gmail.com> To: Sanjay Subramanian <sanjaysubraman...@yahoo.com> Cc: "user@spark.apache.org" <user@spark.apache.org> Sent: Wednesday, October 1, 2014 5:19 PM Subject: Re: Multiple spark shell sessions You need to set --total-executor-cores to limit how many total cores it grabs on the cluster. --executor-cores is just for each individual executor, but it will try to launch many of them. Matei
On Oct 1, 2014, at 4:29 PM, Sanjay Subramanian <sanjaysubraman...@yahoo.com.INVALID> wrote: hey guys I am using spark 1.0.0+cdh5.1.0+41 When two users try to run "spark-shell" , the first guy's spark-shell shows active in the 18080 Web UI but the second user shows WAITING and the shell has a bunch of errors but does go the spark-shell and "sc.master" seems to point to the correct master. I tried controlling the number of cores in the "spark-shell" command --executor-cores 8 Does not work thanks sanjay
