Fabian Hueske created FLINK-1408:
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Summary: Add group sorting with expression key
Key: FLINK-1408
URL: https://issues.apache.org/jira/browse/FLINK-1408
Project: Flink
Issue Type: Improvement
Components: Java API, Scala API
Affects Versions: 0.9
Reporter: Fabian Hueske
Priority: Minor
Currently groups can only be sorted using field indexes (for tuples) and key
selection function.
{{persons.groupBy("name").sortGroup("age",
Order.DESCENDING).groupReduce(do-something-here);}}
Would be good to allow group sorting also with field expressions for Pojos.
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