Claudio Martella commented on GIRAPH-47:

another much easier way, at least for me, would be just to add a getContext() 
inside of BasicVertex and return GraphMapper's Context. In this case I'd guess 
we could also change the definition of Mapper from <Object, Object, Object, 
Object>, although it should work anyway if the the object to write implements 
toString() accordingly.

Or, third possibility, adding an emit(Writable key, Writable value) method to 
BasicVertex that forwards to Context.write().

> Export Worker's Context/State to vertices through 
> pre/post/Application/Superstep
> --------------------------------------------------------------------------------
>                 Key: GIRAPH-47
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-47
>             Project: Giraph
>          Issue Type: Improvement
>          Components: graph
>    Affects Versions: 0.70.0
>            Reporter: Claudio Martella
> It would be quite useful for vertices to reach some worker-related 
> information stored i.e. in the GraphState class.
> This information could be exported as a parameter to 
> pre/post/Application/Superstep like this:
> public void preApplication(Configurable workerObject);
> public void postApplication(Configurable workerObject);
> public void preSuperstep(Configurable workerObject);
> public void postSuperstep(Configurable workerObject);
> public Configurable getWorkerObject();
> Another possibility is to add a Context inner class to BasicVertex to store 
> this information.

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