[GitHub] [arrow-rs] alamb commented on issue #3620: Evaluate Kernel under Selection / Short-Circuiting Filter Evaluation

["alamb (via GitHub)" <gi...@apache.org>]

alamb commented on issue #3620:
URL: https://github.com/apache/arrow-rs/issues/3620#issuecomment-1591204643

   >  the exact same principle also holds for null masks
   
   I think they are "almost always" the same. For example the (non null) values of [`or_kleen`](https://docs.rs/arrow/latest/arrow/compute/fn.or_kleene.html)'s depend on the null values of its input
   
   However, it is an excellent point that for many kernels, the implementation is probably exactly the same after "AND"ing together the validity mask and selection vector.


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