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Posted to issues@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2017/10/10 21:16:00 UTC

[jira] [Closed] (FLINK-7776) do not emit duplicated records in group aggregation

     [ https://issues.apache.org/jira/browse/FLINK-7776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fabian Hueske closed FLINK-7776.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 1.4.0

Implemented for 1.4.0 with 4047be49e10cacc5e4ce932a0b8433afffa82a58

> do not emit duplicated records in group aggregation
> ---------------------------------------------------
>
>                 Key: FLINK-7776
>                 URL: https://issues.apache.org/jira/browse/FLINK-7776
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Ruidong Li
>            Assignee: Ruidong Li
>             Fix For: 1.4.0
>
>
> the current group aggregation will compare the last {{Row}} and current {{Row}} when {{generateRetraction}} is {{true}} and {{firstRow}} is {{false}} in {{GroupAggProcessFunction}},
> this logic should be applied to all cases when {{firstRow}} is false, if current {{Row}} is same with previous {{Row}}, we do not emit any records.



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