cloud-fan commented on code in PR #43958:
URL: https://github.com/apache/spark/pull/43958#discussion_r1413421839
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sql/core/src/main/scala/org/apache/spark/sql/execution/window/WindowFunctionFrame.scala:
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@@ -196,24 +225,16 @@ class FrameLessOffsetWindowFunctionFrame(
offset: Int,
ignoreNulls: Boolean = false)
extends OffsetWindowFunctionFrameBase(
- target, ordinal, expressions, inputSchema, newMutableProjection, offset) {
+ target, ordinal, expressions, inputSchema, newMutableProjection, offset,
ignoreNulls) {
- override def prepare(rows: ExternalAppendOnlyUnsafeRowArray): Unit = {
+ override def prepareForDefaultValue(rows: ExternalAppendOnlyUnsafeRowArray):
Unit = {
resetStates(rows)
Review Comment:
can we add comments to explain why this window frame need to reset states in
`prepareForDefaultValue`?
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