Affects Version/s: 2.1.0
Fix Version/s: None
When using spark-submit with code below
SparkContext ignores conf arg.
This bug is started by this commit.
ignoring conf which not having _jconf
To resolve this problem, you have to call SparkContext._ensure_initialized() before calling SparkConf().
As I cannot find test code for the commit above,
SparkContext initialization process was too complicated for me to write a patch to fix this problem.