[jira] [Created] (FLINK-984) Distinct operator for POJO DataSets without KeySelector and on UnsortedGrouping

Posted by Shang Yuanchun (Jira) on
URL: http://deprecated-apache-flink-mailing-list-archive.368.s1.nabble.com/jira-Created-FLINK-984-Distinct-operator-for-POJO-DataSets-without-KeySelector-and-on-UnsortedGroupig-tp746.html

Ufuk Celebi created FLINK-984:
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             Summary: Distinct operator for POJO DataSets without KeySelector and on UnsortedGrouping
                 Key: FLINK-984
                 URL: https://issues.apache.org/jira/browse/FLINK-984
             Project: Flink
          Issue Type: Improvement
            Reporter: Ufuk Celebi
            Priority: Minor


Two issues regarding the distinct operator:

- The distinct operator does not support {{distinct()}} with POJO datasets. I think it should be possible to implement a reflection based KeySelector which selects all public fields as key?

- All other grouped operators work by {{groupBy(GROUPING).operator(...)}} whereas the distinct operator does {{distinct(GROUPING)}}. I think it would be more consistent to allow {{groupBy(GROUPING).distinct()}}.





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