cloud-fan commented on a change in pull request #30504: URL: https://github.com/apache/spark/pull/30504#discussion_r530602009
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala ########## @@ -873,24 +873,30 @@ object InferFiltersFromGenerate extends Rule[LogicalPlan] { if !e.deterministic || e.children.forall(_.foldable) => generate case generate @ Generate(g, _, false, _, _, _) if canInferFilters(g) => - // Exclude child's constraints to guarantee idempotency - val inferredFilters = ExpressionSet( - Seq( - GreaterThan(Size(g.children.head), Literal(0)), - IsNotNull(g.children.head) - ) - ) -- generate.child.constraints - - if (inferredFilters.nonEmpty) { - generate.copy(child = Filter(inferredFilters.reduce(And), generate.child)) - } else { - generate + g.children.head match { + case _: CreateNonEmptyNonNullCollection => Review comment: In general, optimizer rules should be orthogonal. For this case, I think it's better to add a new optimizer rule that removes the `IsNotNull` and size check predicates above `CreateArray` and `CreateMap`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org