[GitHub] [spark] cloud-fan commented on a change in pull request #30093: [SPARK-33183][SQL] Fix EliminateSorts bug when removing global sorts

[GitBox <gi...@apache.org>]

cloud-fan commented on a change in pull request #30093:
URL: https://github.com/apache/spark/pull/30093#discussion_r509880688



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File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -1052,11 +1052,11 @@ object CombineFilters extends Rule[LogicalPlan] with PredicateHelper {
  *    function is order irrelevant
  */
 object EliminateSorts extends Rule[LogicalPlan] {
-  def apply(plan: LogicalPlan): LogicalPlan = plan transform {
+  def apply(plan: LogicalPlan): LogicalPlan = plan transformUp {

Review comment:
       @allisonwang-db does it have to be `transformUp`?




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