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Posted to issues@flink.apache.org by "Ruidong Li (JIRA)" <ji...@apache.org> on 2017/10/08 11:37:02 UTC

[jira] [Created] (FLINK-7776) remove duplicate records in group aggregation

Ruidong Li created FLINK-7776:
---------------------------------

             Summary: remove duplicate 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


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



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