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https://issues.apache.org/jira/browse/FLINK-10250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske closed FLINK-10250.
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Resolution: Won't Fix
> Flink doesn't support functions that extend RichAggregateFunction in a group
> window
> -----------------------------------------------------------------------------------
>
> Key: FLINK-10250
> URL: https://issues.apache.org/jira/browse/FLINK-10250
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Affects Versions: 1.5.2, 1.5.3, 1.6.0
> Reporter: PengYang
> Priority: Major
>
> Flink doesn't support functions that extend RichAggregateFunction in a group
> window，in the RichAggregateFunction via state store data and fliter out the
> duplicate data .The Flink will support this feature in a future release？There
> is another question whether flink supports global state state query in the
> future？If flink supports global state queries, it can replace redis these
> external caches In certain aspects.Maybe my thoughts are a little naive, but
> I hope that the function of flink is getting better and better
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