cloud-fan commented on code in PR #36541:
URL: https://github.com/apache/spark/pull/36541#discussion_r873425084
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala:
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@@ -1303,12 +1303,25 @@ case class LocalLimit(limitExpr: Expression, child:
LogicalPlan) extends OrderPr
copy(child = newChild)
}
+object OffsetAndLimit {
+ def unapply(p: GlobalLimit): Option[(Int, Int, LogicalPlan)] = {
+ p match {
+ // Optimizer pushes local limit through offset, so we need to match the
plan this way.
+ case GlobalLimit(IntegerLiteral(globalLimit),
+ Offset(IntegerLiteral(offset),
+ LocalLimit(IntegerLiteral(localLimit), child)))
+ if globalLimit + offset == localLimit =>
+ Some((offset, globalLimit, child))
Review Comment:
It's better to go for better readability, instead of saving a bit typing.
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