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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2023/02/27 08:24:00 UTC

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

     [ https://issues.apache.org/jira/browse/SPARK-42592?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-42592:
------------------------------------

    Assignee: Apache Spark

> 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
>            Assignee: Apache Spark
>            Priority: Major
>
> 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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