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https://issues.apache.org/jira/browse/GIRAPH-57?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13128007#comment-13128007
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Jakob Homan commented on GIRAPH-57:
-----------------------------------

Using a combiner will consolidate multiple messages to a single vertex, but 
what I'm suggesting is to (essentially) combine multiple putMsg calls to all 
the vertices on a worker (after combining).  It may be best just to build this 
into individual RPC mechanisms, although the current RPCCommunications class 
knows more about when all the messages to a particular vertex have been 
{{putMsg}}ed than do the individual proxies.
                
> Provide PutMsgs RPC call
> ------------------------
>
>                 Key: GIRAPH-57
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-57
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Jakob Homan
>
> Right now messages are sent to a vertex one at a time.  It would be good to 
> have a putMsgs call that could send messages to multiple vertices (all hosted 
> on the same worker).  We'd save a huge number of individual RPC calls at the 
> expense of having smaller calls with larger payloads.

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