Github user mccheah commented on the pull request:
https://github.com/apache/spark/pull/4972#issuecomment-78716036
Hm, yeah I'm not too opinionated about saving the tiniest of fractions of
seconds by avoiding calling instanceOf too many times - instanceOf is really
really cheap compared to java.lang.reflect.Array as it is. If the majority
opinion is that I made it too complex we can move to just using Scala's Arrays
methods.
(I don't have that much time to work on this any more until after the
weekend though.)
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