Jake Mannix commented on GIRAPH-83:

bq. In that Vertex is responsible for maintaining the destEdgeMap for an 
implementation of Vertex, rather than implementers having to do this 
themselves. For each compute invocation, the vertex shouldn't assume anything 
about its outgoing edges, as they may have been mutated since the last call.

You mean that in the current Vertex class, we have the map of edges right 
there?  It's not really in the framework, it's in the superclass, but ok, 
you're saying we *shouldn't* take care of the bookkeeping about this, and leave 
it always up to the implementations (like the way that 
LongDoubleFloatDoubleVertex does it with primitives)?  Or that there should be 
some other structure which handles them?
> Is Vertex correct yet?
> ----------------------
>                 Key: GIRAPH-83
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-83
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Jakob Homan
> I'm seeing a number of people run into oddities with Vertex and am thinking 
> we may not have it quite correct yet...

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