[jira] [Closed] (FLINK-12098) Add support for generating optimized logical plan for simple group aggregate on stream

["Kurt Young (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kurt Young closed FLINK-12098.
------------------------------
       Resolution: Fixed
    Fix Version/s: 1.9.0

fixed in 517a04f1cbe74d10340b1cb17eb2b4a1b1b11195

> Add support for generating optimized logical plan for simple group aggregate on stream
> --------------------------------------------------------------------------------------
>
>                 Key: FLINK-12098
>                 URL: https://issues.apache.org/jira/browse/FLINK-12098
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner
>            Reporter: godfrey he
>            Assignee: godfrey he
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.9.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> This issue only involves simple stream group aggregate, complex group aggregate(including GROUP SETS and DISTINCT) will also be finished in new issue.
> A logical aggregate will be converted to StreamExecGroupAggregate, and a StreamExecGroupAggregate will be written to two-stage aggregates (StreamExecLocalGroupAggregate and StreamExecGlobalGroupAggregate) if mini-batch is enabled and all aggregate functions are mergeable.
> Retraction rules will also be ported, because multiple level aggregates will produce retraction message.



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