I need to change the python that is being used with my CDH5.5.1 cluster. My research pointed me to set PYSPARK_PYTHON in spark-env.sh. I tried that manually without success. I then used Cloudera Manager to set the variable in both the 'Spark Service Environment Advanced Configuration Snippet'  and  'Spark Service Advanced Configuration Snippet' & about everywhere else that referenced spark-env-sh. This hasn't worked and I'm at a lost where to go next.