[GitHub] [spark] dilipbiswal commented on a change in pull request #25320: [SPARK-28532][SPARK-28530][SQL][FOLLOWUP] Inline doc for FixedPoint(1) batches "Subquery" and "Join Reorder"

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dilipbiswal commented on a change in pull request #25320: [SPARK-28532][SPARK-28530][SQL][FOLLOWUP] Inline doc for FixedPoint(1) batches "Subquery" and "Join Reorder"
URL: https://github.com/apache/spark/pull/25320#discussion_r309899068
 
 

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 File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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 @@ -165,6 +167,8 @@ abstract class Optimizer(sessionCatalog: SessionCatalog)
       RemoveLiteralFromGroupExpressions,
       RemoveRepetitionFromGroupExpressions) :: Nil ++
     operatorOptimizationBatch) :+
+    // Since join casts in AQP can change between multiple runs, there is no reason that we have an
 
 Review comment:
   Nit: typeo .. casts -> cost

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