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https://issues.apache.org/jira/browse/SPARK-25555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-25555:
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Affects Version/s: (was: 2.4.0)
3.0.0
> Generic constructs for windowing and support for custom windows
> ---------------------------------------------------------------
>
> Key: SPARK-25555
> URL: https://issues.apache.org/jira/browse/SPARK-25555
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 3.0.0
> Reporter: Arun Mahadevan
> Priority: Major
>
> Refactor windows logic with generic "assignWindows" and "mergeWindows"
> constructs. The existing windows (Tumbling and sliding) and generic session
> windows can be built on top of this. It could be extended to support
> different types of custom windowing.
> K,Values -> AssignWindows (produces [k, v, timestamp, window]) -> GroupByKey
> (shuffle) -> MergeWindows (optional step) -> GroupWindows -> aggregate values.
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