Hi All,   I have a cloudera cdh5.3 quickstart running on a VM. I am having problems with running Spaark. I have gone thruogh those steps http://www.cloudera.com/content/cloudera/en/documentation/core/latest/topics/cdh_ig_spark_configure.html and run the word exapmle and it worked. But when I go to the master (quickstart.cloudera:18080) it has no workers there the cores=0, memory=0... when I go to (quickstart.cloudera:18081) there is a worker. My question is how to add workers? And what should I enter in export STANDALONE_SPARK_MASTER_HOST?     This is the spark-env.sh: ### Change the following to specify a real cluster's Master host ### export STANDALONE_SPARK_MASTER_HOST=worker-20150402201049-10.0.2.15-7078 export SPARK_MASTER_IP=$STANDALONE_SPARK_MASTER_HOST ### Let's run everything with JVM runtime, instead of Scala export SPARK_LAUNCH_WITH_SCALA=0 export SPARK_LIBRARY_PATH=${SPARK_HOME}/lib export SCALA_LIBRARY_PATH=${SPARK_HOME}/lib export SPARK_MASTER_WEBUI_PORT=18080 export SPARK_MASTER_PORT=7077 export SPARK_WORKER_PORT=7078 export SPARK_WORKER_WEBUI_PORT=18081 export SPARK_WORKER_DIR=/var/run/spark/work export SPARK_LOG_DIR=/var/log/spark export SPARK_PID_DIR='/var/run/spark/' if [ -n "$HADOOP_HOME" ]; then export LD_LIBRARY_PATH=:/lib/native fi export HADOOP_CONF_DIR=${HADOOP_CONF_DIR:-etc/hadoop/conf} ### Comment above 2 lines and uncomment the following if ### you want to run with scala version, that is included with the package #export SCALA_HOME=${SCALA_HOME:-/usr/lib/spark/scala} #export PATH=$PATH:$SCALA_HOME/bin   Thank you, Amr ... View more