cloud-fan commented on a change in pull request #25358: [WIP] Move 
PullOutPythonUDFInJoinCondition rule into 'Extract Python UDFs'
URL: https://github.com/apache/spark/pull/25358#discussion_r310476456
 
 

 ##########
 File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
 ##########
 @@ -183,10 +183,7 @@ abstract class Optimizer(sessionCatalog: SessionCatalog)
     Batch("LocalRelation", fixedPoint,
       ConvertToLocalRelation,
       PropagateEmptyRelation) :+
-    Batch("Extract PythonUDF From JoinCondition", Once,
-      PullOutPythonUDFInJoinCondition) :+
-    // The following batch should be executed after batch "Join Reorder" 
"LocalRelation" and
-    // "Extract PythonUDF From JoinCondition".
+    // The following batch should be executed after batch "Join Reorder" 
"LocalRelation".
 
 Review comment:
   "Join Reorder" and "LocalRelation".

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