Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/1265
Besides I have other 2 concerns.
* I am a little confused about the combination of the interpreter options.
There's so many combinations (2*2*3=12), I am not sure whether users are
comfortable with that.

* Is it necessary to apply this feature globally ? For now it seems spark
interpreter is the only one that needs it as we want each user has his own
SparkContext. I don't see the necessary that other interpreter needs that. (At
least it is not necessary for livy, as livy interpreter will create spark
session per user)
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