In Ambari dashboard, Spark or Spark2 should show on the list of services installed on the left. Click on these links to see status of servers. If there are no links to Spark or Spark2, then it may not be installed. Click on "add services" link on the bottom left to see if Spark and/or Spark2 is selectable for install. ... View more

Hi Tariq, can you confirm that the cluster is running. Also what happens when you attempt to run in local mode? (by changing the --master and --deploy-mode parameters). ... View more

You should not need to change the value. "yarn" should be fine. ... View more