aokolnychyi commented on a change in pull request #32921:
URL: https://github.com/apache/spark/pull/32921#discussion_r652208722
##########
File path: sql/core/src/main/scala/org/apache/spark/sql/execution/subquery.scala
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@@ -227,3 +228,14 @@ object ReuseSubquery extends Rule[SparkPlan] {
}
}
}
+
+object PrepareScans extends Rule[SparkPlan] {
+ def apply(plan: SparkPlan): SparkPlan = {
+ val scans = plan.collect {
+ case scan: BatchScanExec => scan
+ }
+ scans.foreach(_.prepare())
Review comment:
I mention in the doc why I am using `prepare` but we can make this more
specific to dynamic filters if needed.
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