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https://issues.apache.org/jira/browse/FLINK-18835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17173004#comment-17173004
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YHF edited comment on FLINK-18835 at 8/7/20, 9:28 AM:
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[~jark] how can I get the final result? I found duplicate data in sink method.

I print the source and grouped data and I found sometimes there is no group 
data in the result changelog with using a window on the stream.


was (Author: linshi2020):
[~jark] how can I get the final result? I found duplicate data in sink method.

> sql using group by, duplicated group fileld appears
> ---------------------------------------------------
>
>                 Key: FLINK-18835
>                 URL: https://issues.apache.org/jira/browse/FLINK-18835
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / Planner
>    Affects Versions: 1.11.1
>            Reporter: YHF
>            Priority: Critical
>         Attachments: SumAnalysis.java
>
>
> datasource is kafka,then create a temporary view, group by (fieldA,fieldB) 
> using sql,
> then transform the result table to datastream using toRetractStream, then 
> print the result,
> I find duplicated (fieldA,fieldB)
> see attachment for code
> group by(scanType,scanSite,cmtInf),but result is below
> (true,Otm\{, scanType=97, scanSite=14, cmtInf=24,jp=1.000000000000000000, 
> db=0E-18, dbjp=1.000000000000000000, pjWei=27.070000000000000000, 
> dbWei=0E-18, mintime=2020-07-29 11:33:57.679, maxtime=2020-07-29 
> 11:33:57.679})
> 3> (true,Otm\{, scanType=97, scanSite=14, cmtInf=24,jp=1.000000000000000000, 
> db=0E-18, dbjp=1.000000000000000000, pjWei=27.070000000000000000, 
> dbWei=0E-18, mintime=2020-07-29 11:33:57.679, maxtime=2020-07-29 
> 11:33:57.679})



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