beliefer commented on code in PR #50019:
URL: https://github.com/apache/spark/pull/50019#discussion_r1964686198
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/QueryPlan.scala:
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@@ -67,15 +67,16 @@ abstract class QueryPlan[PlanType <: QueryPlan[PlanType]]
def outputOrdering: Seq[SortOrder] = Nil
// Override `treePatternBits` to propagate bits for its expressions.
- override lazy val treePatternBits: BitSet = {
+ private val _treePatternBits = new BestEffortLazyVal[BitSet](() => {
Review Comment:
Curiously, Since the `treePatternBits` only init once, how it keep the
correctness if the expressions transformed with rules?
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