Github user liancheng commented on the pull request:
https://github.com/apache/spark/pull/3161#issuecomment-63097267
@sarutak Could you please provide some details about the problems you
mentioned above? I can see that if we don't enumerate all data types in
functions like `createEqualityFilter`, then there can be match error. We can
either support all data types as it is now (but you said there're problems) or
make functions like `createEqualityFilter` return an `Option[CatalystFilter]`.
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