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From "Tobias (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1020) Add minBy() and maxBy() selection functions
Date Mon, 11 Aug 2014 13:09:12 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14092743#comment-14092743
] 

Tobias commented on FLINK-1020:
-------------------------------

How can I implement test cases for this type of functionality?

https://github.com/tobwiens/incubator-flink/compare/FLINK-1020-FIX

> 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
>            Assignee: Tobias
>            Priority: Minor
>              Labels: starter
>             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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