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https://issues.apache.org/jira/browse/FLINK-20791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17255811#comment-17255811
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Sebastian Liu commented on FLINK-20791:
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Hi [~lirui], [~godfreyhe], [~jark], Appreciate for your time to take a look,
and I have opened a related discussion in Flink dev mailing group, thanks!
> Support local aggregate push down for Blink batch planner
> ---------------------------------------------------------
>
> Key: FLINK-20791
> URL: https://issues.apache.org/jira/browse/FLINK-20791
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / API, Table SQL / Planner
> Reporter: Sebastian Liu
> Priority: Major
>
> Aggregate operator of Flink SQL is currently fully done at Flink layer. With
> the developing of storage, many downstream storage of Flink SQL has the
> ability to deal with Aggregation operator.
> Pushing down Aggregate to data source layer will improve performance from the
> perspective of the network IO and computation overhead.
>
> I have drafted a design doc for this new feature.
> [https://docs.google.com/document/d/1kGwC_h4qBNxF2eMEz6T6arByOB8yilrPLqDN0QBQXW4/edit?usp=sharing]
>
> Any comment or discussion is welcome.
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