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https://issues.apache.org/jira/browse/SPARK-47960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jungtaek Lim reassigned SPARK-47960:
------------------------------------

    Assignee: Bhuwan Sahni

> Support Chaining Stateful Operators in TransformWithState
> ---------------------------------------------------------
>
>                 Key: SPARK-47960
>                 URL: https://issues.apache.org/jira/browse/SPARK-47960
>             Project: Spark
>          Issue Type: New Feature
>          Components: Structured Streaming
>    Affects Versions: 4.0.0
>            Reporter: Bhuwan Sahni
>            Assignee: Bhuwan Sahni
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>
> This issue tracks adding support to chain stateful operators after the 
> Arbitrary State API, transformWithState. In order to support chaining, we 
> need to allow the user to specify the new eventTimeColumn in the output from 
> StatefulProcessor. Any watermark evaluation expressions downstream after 
> transformWithState would use the user specified eventTimeColumn.



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