PengYang created FLINK-10250:
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Summary: 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: 1.6.0, 1.5.3, 1.5.2
Reporter: PengYang
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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