Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/1708#issuecomment-50870258
It's not an existing issue in that the test compiles and passes in Scala
2.10.
Is this the difference in Scala 2.11?
https://issues.scala-lang.org/browse/SI-8157
Do I read it right that it was never supposed to be allowed to have a
default argument in more than one of several overloaded methods?
If so, then yeah it sounds like this has to change, although it ends up
changing the API. (And honestly, probably better if there were fewer than more
default arguments.)
In this particular case, there are two constructors with a default
argument. I suppose the question is which one to keep and what to think about
the API change?
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