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Posted to issues@flink.apache.org by "Ufuk Celebi (JIRA)" <ji...@apache.org> on 2014/06/25 16:03:25 UTC
[jira] [Created] (FLINK-984) Distinct operator for POJO DataSets
without KeySelector and on UnsortedGrouping
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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