jchen5 commented on code in PR #35975:
URL: https://github.com/apache/spark/pull/35975#discussion_r849993911
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sql/core/src/main/scala/org/apache/spark/sql/execution/limit.scala:
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@@ -182,6 +190,48 @@ case class GlobalLimitExec(limit: Int, child: SparkPlan)
extends BaseLimitExec {
copy(child = newChild)
}
+/**
+ * Skip the first `offset` elements then take the first `limit` of the
following elements in
+ * the child's single output partition.
Review Comment:
It looks like if the child has multiple partitions, zipWithIndex will index
starting with all the rows in the first partition, then the next partition etc.
This is fine assuming the child data isn't sorted. Could you add a comment
about this?
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