cloud-fan commented on a change in pull request #25955: [SPARK-29277][SQL] Add
early DSv2 filter and projection pushdown (WIP)
URL: https://github.com/apache/spark/pull/25955#discussion_r330360144
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -252,6 +259,11 @@ abstract class Optimizer(sessionCatalog: SessionCatalog)
*/
def extendedOperatorOptimizationRules: Seq[Rule[LogicalPlan]] = Nil
+ /**
+ * Override to provide additional rules for early projection and filter
pushdown to scans.
+ */
+ def earlyScanPushDownRules: Seq[Rule[LogicalPlan]] = Nil
Review comment:
can we use the `extendedOperatorOptimizationRules`? It also happens before
any rules that depending on stats
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