[jira] [Commented] (FLINK-3469) Improve documentation for grouping keys

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-3469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15229000#comment-15229000 ] 

ASF GitHub Bot commented on FLINK-3469:
---------------------------------------

GitHub user greghogan opened a pull request:

    https://github.com/apache/flink/pull/1858

    [FLINK-3469] Improve documentation for grouping keys

    Updates the documentation with examples for the four methods for specifying keys and places the examples into the proper category.

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

    $ git pull https://github.com/greghogan/flink 3469_improve_documentation_for_grouping_keys

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

    https://github.com/apache/flink/pull/1858.patch

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

    This closes #1858
    
----
commit 7bca344adca9eb3386c1754cf99868f12761ef91
Author: Greg Hogan <co...@greghogan.com>
Date:   2016-04-06T19:44:47Z

    [FLINK-3469] Improve documentation for grouping keys

----


> Improve documentation for grouping keys
> ---------------------------------------
>
>                 Key: FLINK-3469
>                 URL: https://issues.apache.org/jira/browse/FLINK-3469
>             Project: Flink
>          Issue Type: Improvement
>          Components: Documentation
>    Affects Versions: 1.0.0
>            Reporter: Greg Hogan
>            Assignee: Greg Hogan
>             Fix For: 1.1.0
>
>
> The transformation documentation for "Reduce on DataSet Grouped by KeySelector Function" uses a field expression in the Java example.
> There are four ways to specify keys and only two have named examples in the documentation. Expand the documentation to cover all cases.



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