Github user sameeragarwal commented on the pull request:
https://github.com/apache/spark/pull/11585#issuecomment-194041168
@nongli @davies I think part of the rationale for having
https://github.com/apache/spark/pull/11511 was to avoid having the extract the
operator's (and its child's) constraints during the physical planning/ codegen
phase. Could we not just rewrite the code generated by filter such that all
isNotNull attributes are converted to ${input(i).isNull`? Along with
https://github.com/apache/spark/pull/11372,
https://github.com/apache/spark/pull/11511 would help us achieve the same goal.
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