Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/14452#discussion_r77123756
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -89,6 +90,8 @@ abstract class Optimizer(sessionCatalog: SessionCatalog,
conf: CatalystConf)
CombineFilters,
CombineLimits,
CombineUnions,
+ // Pushdown Filters again after combination
--- End diff --
This change is submitted at #14912. Because it prevents this PR pushdown
some predicates, for the easy of test, I also include that change here.
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