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From Alessandro Lulli <>
Subject Re: Incrementally add/remove vertices in GraphX
Date Mon, 17 Mar 2014 16:50:22 GMT
Hi All,

Is somebody looking into this?
I think this is correlated with the discussion "Are there any plans to
develop Graphx Streaming?".

Using union / subtract on VertexRDD or EdgeRDD leads on the creation of new
RDD but NOT in the modification of the RDD in the graph.
Is creating a new graph the only way to go to add /remove vertex or edge?


On Fri, Mar 14, 2014 at 4:32 PM, alelulli <>wrote:

> Hi Matei,
> Could you please clarify why i must call union before creating the graph?
> What's the behavior if i call union / subtract after the creation?
> Is the added /removed vertexes been processed?
> For example if i'm implementing an iterative algorithm and at the 5th step
> i
> need to add some vertex / edge, can i call union / subtract on the
> VertexRDD, EdgeRDD and Triplets?
> Thanks
> Alessandro
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