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Posted to dev@giraph.apache.org by "Eli Reisman (JIRA)" <ji...@apache.org> on 2012/11/09 18:22:12 UTC

[jira] [Commented] (GIRAPH-414) Create BinaryCombiner ands specialized message store for it

    [ https://issues.apache.org/jira/browse/GIRAPH-414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13494135#comment-13494135 ] 

Eli Reisman commented on GIRAPH-414:
------------------------------------

Yes! This makes me happy!
                
> Create BinaryCombiner ands specialized message store for it
> -----------------------------------------------------------
>
>                 Key: GIRAPH-414
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-414
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Maja Kabiljo
>            Assignee: Maja Kabiljo
>
> Current combiner interface is very general, but also doesn't provide the best performance. All the combiners we currently have are binary combiners, i.e. they can combine two messages into one. Having a lists around this simple concept makes it slower and requires more object creations.
> Adding BinaryCombiner, and a specialized message store which will be used with it. This message store has only one message per vertex instead of having a collection per vertex.

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