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Posted to issues@spark.apache.org by "Jungtaek Lim (Jira)" <ji...@apache.org> on 2023/02/27 04:54:00 UTC

[jira] [Created] (SPARK-42592) Document SS guide doc for supporting multiple stateful operators (especially chained aggregations)

Jungtaek Lim created SPARK-42592:
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             Summary: Document SS guide doc for supporting multiple stateful operators (especially chained aggregations)
                 Key: SPARK-42592
                 URL: https://issues.apache.org/jira/browse/SPARK-42592
             Project: Spark
          Issue Type: Documentation
          Components: Structured Streaming
    Affects Versions: 3.5.0
            Reporter: Jungtaek Lim


We made a change on the guide doc for SPARK-40925 via SPARK-42105, but from SPARK-42105 we only removed the section of "limitation of global watermark". That said, we haven't provided any example of new functionality, especially that users need to know about the change of SQL function (window) in chained time window aggregations.

In this ticket, we will add the example of chained time window aggregations, with introducing new functionality of SQL function.



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