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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2020/03/16 22:52:07 UTC
[jira] [Updated] (SPARK-25555) Generic constructs for windowing and
support for custom windows
[ https://issues.apache.org/jira/browse/SPARK-25555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun updated SPARK-25555:
----------------------------------
Affects Version/s: (was: 3.0.0)
3.1.0
> 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: 3.1.0
> 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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