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https://issues.apache.org/jira/browse/FLINK-1523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14545420#comment-14545420
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ASF GitHub Bot commented on FLINK-1523:
---------------------------------------

GitHub user vasia opened a pull request:

    https://github.com/apache/flink/pull/680

    [FLINK-1523] vertex-centric iteration extensions

    This PR builds on top of @andralungu's work in #537.
    
    The vertex-centric iteration is extended with the following options:
    - set the messaging direction
    - retrieve the total number of vertices inside the messaging and update 
functions
    - retrieve the in- and out- degrees of a vertex inside the messaging and 
update functions
    
    The functions are also modified to use the Vertex type as a parameter 
instead of separate key and value.

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

    $ git pull https://github.com/vasia/flink vc-extentions

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

    https://github.com/apache/flink/pull/680.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 #680
    
----
commit 887d6cbc0e681c0910bb5eac05e5a89fa8d3490d
Author: andralungu <lungu.an...@gmail.com>
Date:   2015-03-16T13:04:23Z

    [FLINK-1523] [gelly] Vertex centric iteration extensions
    
    Removed trailing splits into vertex key and value
    
    Made the extensions optional and separate
    
    Removed overhead when the options are not used

commit 945ee979a6145330a8d9bb9522a5a266b4fb8e36
Author: andralungu <lungu.an...@gmail.com>
Date:   2015-04-16T08:31:23Z

    [FLINK-1523] [gelly] Added Vertex Centric Configuration Tests
    
    This commit squashes the following:
    
    Pratially addressed inline comments
    
    Added test for removal of a non-SP-edge

commit 3ffaa024a1d155495106aafe9844fab9e7530fed
Author: andralungu <lungu.an...@gmail.com>
Date:   2015-04-28T18:08:35Z

    [FLINK-1523] [gelly] Added VertexWithDegrees as a subclass of Vertex

commit fd64f58c5201a5b86350cd6d0a59b5918517ab64
Author: vasia <va...@apache.org>
Date:   2015-05-11T13:21:53Z

    [FLINK-1523] [gelly] added getIn/Out degrees methods in update and 
messaging functions;
        deleted VertexWithValue type;
        deleted InaccessibleMethodException; if the options are not set, -1 is 
returned;
        added missing javadocs;
        added tests;
        renamed type parameters VertexKey -> K, VertexValue -> VV, EdgeValue -> 
EV.

commit ae7774e8c4d7a2d86253863670ff4ca5a237d63a
Author: vasia <va...@apache.org>
Date:   2015-05-11T13:27:52Z

    [FLINK-1523] [gelly] [docs] updated vertex-centric docs accordingly

----


> Vertex-centric iteration extensions
> -----------------------------------
>
>                 Key: FLINK-1523
>                 URL: https://issues.apache.org/jira/browse/FLINK-1523
>             Project: Flink
>          Issue Type: Improvement
>          Components: Gelly
>            Reporter: Vasia Kalavri
>            Assignee: Andra Lungu
>
> We would like to make the following extensions to the vertex-centric 
> iterations of Gelly:
> - allow vertices to access their in/out degrees and the total number of 
> vertices of the graph, inside the iteration.
> - allow choosing the neighborhood type (in/out/all) over which to run the 
> vertex-centric iteration. Now, the model uses the updates of the in-neighbors 
> to calculate state and send messages to out-neighbors. We could add a 
> parameter with value "in/out/all" to the {{VertexUpdateFunction}} and 
> {{MessagingFunction}}, that would indicate the type of neighborhood.



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