1、cdh执行spark任务(直接在yarn执行)
spark2-submit \ --master yarn \ --num-executors 1 \ --executor-cores 1 \ --executor-memory 1G \ --class org.apache.spark.examples.SparkPi \ /opt/cloudera/parcels/SPARK2/lib/spark2/examples/jars/spark-examples_2.11-2.2.0.cloudera2.jar