[jira] [Commented] (FLINK-4213) Provide CombineHint in Gelly algorithms

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

    [ https://issues.apache.org/jira/browse/FLINK-4213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15377224#comment-15377224 ] 

ASF GitHub Bot commented on FLINK-4213:
---------------------------------------

GitHub user greghogan opened a pull request:

    https://github.com/apache/flink/pull/2248

    [FLINK-4213] [gelly] Provide CombineHint in Gelly algorithms

    `VertexDegrees` has changed from using a `ReduceFunction` to using a `GroupReduceFunction` as in directed `TriangleListing`.

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

    $ git pull https://github.com/greghogan/flink 4213_provide_combinehint_in_gelly_algorithms

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

    https://github.com/apache/flink/pull/2248.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 #2248
    
----
commit 2a8e5c708acefa881223bb3c8a6371bd5bb6ea9b
Author: Greg Hogan <co...@greghogan.com>
Date:   2016-07-14T13:39:02Z

    [FLINK-4213] [gelly] Provide CombineHint in Gelly algorithms

----


> Provide CombineHint in Gelly algorithms
> ---------------------------------------
>
>                 Key: FLINK-4213
>                 URL: https://issues.apache.org/jira/browse/FLINK-4213
>             Project: Flink
>          Issue Type: Improvement
>          Components: Gelly
>    Affects Versions: 1.1.0
>            Reporter: Greg Hogan
>            Assignee: Greg Hogan
>
> Many graph algorithms will see better {{reduce}} performance with the hash-combine compared with the still default sort-combine, e.g. HITS and LocalClusteringCoefficient.



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