[GitHub] [spark] yeshengm commented on a change in pull request #25164: [SPARK-28375][SQL] Prevent the PullupCorrelatedPredicates optimizer rule from removing predicates if run multiple times

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yeshengm commented on a change in pull request #25164: [SPARK-28375][SQL] Prevent the PullupCorrelatedPredicates optimizer rule from removing predicates if run multiple times
URL: https://github.com/apache/spark/pull/25164#discussion_r304215574
 
 

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 File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/subquery.scala
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 @@ -275,13 +275,16 @@ object PullupCorrelatedPredicates extends Rule[LogicalPlan] with PredicateHelper
     plan transformExpressions {
       case ScalarSubquery(sub, children, exprId) if children.nonEmpty =>
         val (newPlan, newCond) = pullOutCorrelatedPredicates(sub, outerPlans)
-        ScalarSubquery(newPlan, newCond, exprId)
+        val conds = newCond ++ children.filter(_.isInstanceOf[Predicate])
 
 Review comment:
   @dilipbiswal According to jira, it seems that spark-19712 is already resolved. That said, we can safely combine the two now, right?

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