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https://issues.apache.org/jira/browse/GIRAPH-613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13626976#comment-13626976
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Claudio Martella commented on GIRAPH-613:
-----------------------------------------

I'm doing one thing at a time, but that should not take too much time. (1) 
de-couple storage of edges and vertex value (2) ignore writing back to disk 
edges if parameter is set. Hopefully I'll make it on time for the release.
                
> Remove Writable from the interfaces implemented by Vertex
> ---------------------------------------------------------
>
>                 Key: GIRAPH-613
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-613
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Claudio Martella
>            Priority: Minor
>         Attachments: NonWritable.diff
>
>
> Currently, Vertex implements Writable, meaning that we depend on the user 
> (except for the default implementation) on the way the graph is serialised 
> and deserialized. This means we cannot do certain optimisations, and the user 
> can actually add additional stuff to Vertex more than Value, Id, Edges and 
> halt state. By removing this possibility (or allowing them to extend a 
> default implementation) we take control of this.

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