cca-175 Spark version CDH 5.15 -Spark 1.6 OR Spark 2.3

[#1]

Will appreciate if someone can please guide which version of Spark will be used for test as Exam page states both 1.6 and 2.3 are available on cluster.

CCA175 is a hands-on, practical exam using Cloudera technologies. Each user is given their own CDH5 (currently 5.15.0) cluster pre-loaded with Spark 1.6, Spark 2.3

Thank you  in advance for helping me out.

[#2]

As per below link, you can run both versions of Spark side-by-side without conflicts:

• spark2-submit instead of spark-submit.

• spark2-shell instead of spark-shell.

• pyspark2 instead of pyspark.

https://www.cloudera.com/documentation/spark2/latest/topics/spark_running_apps.html

Typing spark-shell  loads Spark 1.6

Typing spark2-shell loads Spark 2.0

[#3]

Thank you very much for your reply. My question was more regarding exam-certification - just wanted to be sure as whether I get to choose or just have one default option of 1.6

Will apprecaite if some can please guide (EXAM point of view)