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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1020) Add minBy() and maxBy() selection functions
Date Fri, 22 Aug 2014 16:42:11 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14107056#comment-14107056

ASF GitHub Bot commented on FLINK-1020:

GitHub user tobwiens opened a pull request:


    [FLINK-1020] Introduce minBy and maxBy. Issue #1020.


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/tobwiens/incubator-flink FLINK-1020-working-rebase

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #101
commit 4c64e5cf87456f23fb67707aa1ed47ba8ecd62c5
Author: TobiasWiens <tobwiens@gmail.com>
Date:   2014-08-22T10:10:37Z

    [FLINK-1020] Introduce minBy and maxBy


> 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: 0.7-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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