beliefer commented on a change in pull request #29800:
URL: https://github.com/apache/spark/pull/29800#discussion_r512381721
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/window/WindowExecBase.scala
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@@ -172,17 +179,41 @@ trait WindowExecBase extends UnaryExecNode {
// Create the factory to produce WindowFunctionFrame.
val factory = key match {
// Offset Frame
Review comment:
OK. I update the comment of `FrameLessOffsetWindowFunctionFrame`
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