I am looking into the source code of Spark-mllib, and I noticed all the source code are in scala, not java.
Wouldn't scala in general use more resources than Java? Why the ML engine here is written in scala, not Java? Am I missing anything here?
Also, Eclipse Luna seems to have trouble coordinate with the latest version of scala? Which IDE would people recommend for build the spark code with scala modules?
Thank you very much!
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