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From "Claudio Martella (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-80) Don't expose the list holding the messages in BasicVertex
Date Tue, 15 Nov 2011 10:56:51 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13150372#comment-13150372
] 

Claudio Martella commented on GIRAPH-80:
----------------------------------------

I favor the Iterable<M> approach, as suggested by Jake, too. 
I was going to file this same JIRA today, good job Sebastian :)
                
> Don't expose the list holding the messages in BasicVertex
> ---------------------------------------------------------
>
>                 Key: GIRAPH-80
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-80
>             Project: Giraph
>          Issue Type: Improvement
>    Affects Versions: 0.70.0
>            Reporter: Sebastian Schelter
>
> I'm currently trying to implement my own memory efficient vertex (similar to LongDoubleFloatDoubleVertex)
and ran into problems with getMsgList()
> This method returns a list pointing to the messages of the vertex and it is modified
externally (BasicRPCCommunications calls clear() and addAll() e.g.). This makes it very hard
to use something else than a java.util.List internally (LongDoubleFloatDoubleVertex "hacked"
around this) and it is generally dangerous to have the internal state of an object be modified
externally. It also makes the code harder to read and understand.
> I'd suggest to change the API to let a vertex handle the modifications itself internally
(e.g. add something like pushMessages(...))

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