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https://issues.apache.org/jira/browse/SPARK-38214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17492460#comment-17492460
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Apache Spark commented on SPARK-38214:
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User 'nyingping' has created a pull request for this issue:
https://github.com/apache/spark/pull/35526
> No need to filter data when the sliding window length is not redundant
> ----------------------------------------------------------------------
>
> Key: SPARK-38214
> URL: https://issues.apache.org/jira/browse/SPARK-38214
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 3.2.1
> Reporter: nyingping
> Priority: Minor
>
> At present, the sliding window adopts the form of expand + filter, but in
> some cases, filter is not necessary.
> Filter is required if the sliding window is irregular. When the window length
> is divided by the slide length the result is an integer (I believe this is
> also the case for most work scenarios in practice for sliding window), there
> is no need to filter, which can save calculation resources and improve
> performance.
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