Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/12040#discussion_r58120586
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/Window.scala ---
@@ -920,7 +931,7 @@ private[execution] object AggregateProcessor {
// Create the projections.
val initialProjection = newMutableProjection(
initialValues,
- Seq(SizeBasedWindowFunction.n))()
+ Seq(partitionSize))()
--- End diff --
Yeah the initial buffer will have more values. A `partitionSize` attribute
will only be created/initialized when a `SizeBasedWindowFunction` is used. The
`partitionSize` will be put at the first position, and others will be placed
after that.
The initialization logic can be found here:
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/Window.scala#L965-L967
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
