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https://issues.apache.org/jira/browse/FLINK-8690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rong Rong updated FLINK-8690:
-----------------------------
    Description: 
**Currently, *FlinkLogicalAggregate* does not allow distinct aggregate.

We are proposing to reuse distinct aggregate codegen work designed for 
*FlinkLogicalOverAggregate* / *FlinkLogicalWindowAggregate*, to support 
unbounded distinct aggregation on datastream as well.

  was:
**Currently, *FlinkLogicalAggregate* does not allow distinct aggregate.

We are proposing to reuse distinct aggregate codegen work designed for 
*FlinkLogicalOverAggregate* / *FlinkLogicalWindowAggregate*, to support 
unbounded distinct aggregation as well.


> Update logical rule set to generate FlinkLogicalAggregate explicitly allow 
> distinct agg on DataStream
> -----------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-8690
>                 URL: https://issues.apache.org/jira/browse/FLINK-8690
>             Project: Flink
>          Issue Type: Sub-task
>            Reporter: Rong Rong
>            Assignee: Rong Rong
>            Priority: Major
>
> **Currently, *FlinkLogicalAggregate* does not allow distinct aggregate.
> We are proposing to reuse distinct aggregate codegen work designed for 
> *FlinkLogicalOverAggregate* / *FlinkLogicalWindowAggregate*, to support 
> unbounded distinct aggregation on datastream as well.



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