mgaido91 commented on a change in pull request #22284: [SPARK-25278][SQL] Avoid
duplicated Exec nodes when the same logical plan appears in the query
URL: https://github.com/apache/spark/pull/22284#discussion_r244149916
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/planning/QueryPlanner.scala
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@@ -81,7 +81,7 @@ abstract class QueryPlanner[PhysicalPlan <:
TreeNode[PhysicalPlan]] {
childPlans.map { childPlan =>
// Replace the placeholder by the child plan
candidateWithPlaceholders.transformUp {
- case p if p == placeholder => childPlan
+ case p if p.eq(placeholder) => childPlan
Review comment:
I agree, the test can be used for testing the other patch then or removed
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