brkyvz commented on a change in pull request #25569: [SPARK-28863] Introduce
AlreadyPlanned, a node that speeds-up planning
URL: https://github.com/apache/spark/pull/25569#discussion_r317311235
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala
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@@ -632,6 +632,7 @@ abstract class SparkStrategies extends
QueryPlanner[SparkPlan] {
object BasicOperators extends Strategy {
def apply(plan: LogicalPlan): Seq[SparkPlan] = plan match {
+ case AlreadyPlanned(physical, output) => AlreadyPlannedExec(physical,
output) :: Nil
Review comment:
You still go through the entire join planning, Adaptive query planning and
much more. We also may need to add projections to rewrite expression ids in
case the plan was re-used in joins, etc
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