[jira] [Created] (FLINK-2549) Add topK operator for DataSet

[Chengxiang Li (JIRA)]

Chengxiang Li created FLINK-2549:
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             Summary: Add topK operator for DataSet
                 Key: FLINK-2549
                 URL: https://issues.apache.org/jira/browse/FLINK-2549
             Project: Flink
          Issue Type: New Feature
          Components: Core, Java API, Scala API
            Reporter: Chengxiang Li
            Assignee: Chengxiang Li
            Priority: Minor


topK is a common operation for user, it would be great to have it in Flink. 



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