Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/589#issuecomment-42114207
@srowen these are all great - thanks! I'm going to merge it.
For the reduceByKeyAndWindow issue, I think that's just an oversight that
occurred during the Java 8 re-factoring, and just needs to be changed to
`JFunction2`.
For the compile error, this is a sort of weird corner case with method
overloading in Scala. I think you'll need to specify a type signature for the
reduce function.
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