Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/14012#discussion_r70053206 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala --- @@ -1135,11 +1146,16 @@ object PushDownPredicate extends Rule[LogicalPlan] with PredicateHelper { // For each filter, expand the alias and check if the filter can be evaluated using // attributes produced by the aggregate operator's child operator. - val (pushDown, stayUp) = splitConjunctivePredicates(condition).partition { cond => + val (candidates, containingNonDeterministic) = + splitConjunctivePredicates(condition).span(_.deterministic) + + val (pushDown, rest) = candidates.partition { cond => val replaced = replaceAlias(cond, aliasMap) - replaced.references.subsetOf(aggregate.child.outputSet) && replaced.deterministic + replaced.references.subsetOf(aggregate.child.outputSet) } + val stayUp = rest ++ containingNonDeterministic + --- End diff -- Should we factor the single line that computes the stayUp predicates? Or should we also put the computation of restãcontainingNonDeterministic into a helper method? I'm not quite sure about that. Please tell me what should I update, thanks!
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