Github user tdas commented on the pull request:
https://github.com/apache/spark/pull/2216#issuecomment-55364803
Binary compatibility is still the problem. I think adding optional
parameter to a scala function breaks binary compatibility. I suggest do the
same in Scala API as you have done in the Java API - leave the existing
`print()` method interface untouched, and add a new `print(num: Int)`. Lets
hope that works.
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