[jira] [Created] (FLINK-1020) Add minBy() and maxBy() selection functions

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-1020:
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             Summary: Add minBy() and maxBy() selection functions
                 Key: FLINK-1020
                 URL: https://issues.apache.org/jira/browse/FLINK-1020
             Project: Flink
          Issue Type: Improvement
          Components: Java API
    Affects Versions: 0.6-incubating
            Reporter: Stephan Ewen
            Priority: Minor
             Fix For: 0.6-incubating


Adding a minBy() and maxBy() function is a valuable addition. Those are not aggregation functions, because they do not work on individual fields.

They can be implemented as a simple reduce.



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