Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/18087#discussion_r118353924 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala --- @@ -195,9 +195,9 @@ case class Intersect(left: LogicalPlan, right: LogicalPlan) extends SetOperation val leftSize = left.stats(conf).sizeInBytes val rightSize = right.stats(conf).sizeInBytes val sizeInBytes = if (leftSize < rightSize) leftSize else rightSize - val isBroadcastable = left.stats(conf).isBroadcastable || right.stats(conf).isBroadcastable - - Statistics(sizeInBytes = sizeInBytes, isBroadcastable = isBroadcastable) + Statistics( + sizeInBytes = sizeInBytes, + hints = left.stats(conf).hints.resetForJoin()) --- End diff -- It's actually no-op since Intersect is rewritten to a join always ..
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