Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/19099#discussion_r136637929
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -79,11 +79,11 @@ abstract class Optimizer(sessionCatalog: SessionCatalog)
PushProjectionThroughUnion,
ReorderJoin,
EliminateOuterJoin,
+ InferFiltersFromConstraints,
--- End diff --
This is not ideal, but it should resolve the specific failure case and
could unblock other PR.
@gatorsmile is working on an alter approach that should perfectly resolve
the entire issue of add/remove filters, but it takes time and I don't think it
will be ready in a few days.
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