viirya commented on a change in pull request #30558:
URL: https://github.com/apache/spark/pull/30558#discussion_r533595945
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -185,6 +185,9 @@ abstract class Optimizer(catalogManager: CatalogManager)
RemoveLiteralFromGroupExpressions,
RemoveRepetitionFromGroupExpressions) :: Nil ++
operatorOptimizationBatch) :+
+ // This batch rewrites plans and should be run after the operator
+ // optimization batch and before any batches that depend on stats.
+ Batch("Rewrite Rules", Once, rewriteRules: _*) :+
Review comment:
Looks better. Thanks for the change.
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