Github user dilipbiswal commented on the pull request:
https://github.com/apache/spark/pull/10520#issuecomment-171112636
@yhuai Hi Yin, Could you please look at the changes when you get a chance.
It turns out that we can't compare the classname and instance for equality for
GenericUDFMacro as the instances are different. I am instead comparing the
underlying function that is held by GenericUDFMacro. Please let me know what
you think.
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