Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/9995#discussion_r45957358
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -660,14 +660,14 @@ object PushPredicateThroughGenerate extends
Rule[LogicalPlan] with PredicateHelp
case filter @ Filter(condition, g: Generate) =>
// Predicates that reference attributes produced by the `Generate`
operator cannot
// be pushed below the operator.
- val (pushDown, stayUp) =
splitConjunctivePredicates(condition).partition {
- conjunct => conjunct.references subsetOf g.child.outputSet
--- End diff --
conjunct doesn't make sense - "and" is the conjunction, and the individual
conditions are not.
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