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https://issues.apache.org/jira/browse/FLINK-29692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17715607#comment-17715607
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Jark Wu commented on FLINK-29692:
---------------------------------

I think early fire / late arrival is a great feature, but I just want to 
explore if we have other or better solutions for the use case because 
supporting early fire / late arrival on the new window TVF might not be easy. 

> Support early/late fires for Windowing TVFs
> -------------------------------------------
>
>                 Key: FLINK-29692
>                 URL: https://issues.apache.org/jira/browse/FLINK-29692
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner
>    Affects Versions: 1.15.3
>            Reporter: Canope Nerda
>            Priority: Major
>
> I have cases where I need to 1) output data as soon as possible and 2) handle 
> late arriving data to achieve eventual correctness. In the logic, I need to 
> do window deduplication which is based on Windowing TVFs and according to 
> source code, early/late fires are not supported yet in Windowing TVFs.
> Actually 1) contradicts with 2). Without early/late fires, we had to 
> compromise, either live with fresh incorrect data or tolerate excess latency 
> for correctness.



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