Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17770#discussion_r117949203
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
---
@@ -912,3 +913,17 @@ case class Deduplicate(
override def output: Seq[Attribute] = child.output
}
+
+/** A logical plan for setting a barrier of analysis */
+case class AnalysisBarrier(child: LogicalPlan) extends LeafNode {
+ override def output: Seq[Attribute] = child.output
+ override def analyzed: Boolean = true
+ override def isStreaming: Boolean = child.isStreaming
+ override lazy val canonicalized: LogicalPlan = child.canonicalized
+
+ override def find(f: LogicalPlan => Boolean): Option[LogicalPlan] = if
(f(this)) {
--- End diff --
I've tried to use `plan.canonicalized` as cache key. However, it breaks
looking up of cached plans. To fix it might change current looking up, I'd tend
to just override `find` for `AnalysisBarrier`
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