We have CDH 6.1.1. When I run pyspark on command line, it uses version 3 $ pyspark Python 3.6.4 |Anaconda, Inc.| (default, Jan 16 2018, 18:10:19) [GCC 7.2.0] on linux Type "help", "copyright", "credits" or "license" for more information. Setting default log level to "WARN". To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel). 21/06/07 10:47:44 WARN cluster.YarnSchedulerBackend$YarnSchedulerEndpoint: Attempted to request executors before the AM has registered! Welcome to ____ __ / __/__ ___ _____/ /__ _\ \/ _ \/ _ `/ __/ '_/ /__ / .__/\_,_/_/ /_/\_\ version 2.4.0-cdh6.1.1 /_/ When I run oozie workflow with single saprk action. I printed the python version it uses inside spark and I found it is using python version 2.7.5 Python version 2.7.5 (default, Feb 20 2018, 09:19:12) [GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] Version info. sys.version_info(major=2, minor=7, micro=5, releaselevel='final', serial=0) Following the part of python code I used in the python:   import sys print("Python version") print (sys.version) print("Version info.") print (sys.version_info) # In[ ]: print("printing the values:") print(sys.argv) # print("Nominal Time:" + sys.argv[-1]) # print("Data Dependency:" + sys.argv[-2])  How can I change the python version used by oozie in spark actions to use python 3? ... View more