Hi,

Question: Will there be HBaseEdgeInputFormat class or is there a restriction of 
HBase thus we can't implement it?

HBaseVertexInputFormat is fine for vertex-centric reading, i.e. each row in 
HBase corresponds to one Vertex. But it does not allow me to create duplicate 
vertices with the same ID.
Now I have the case "many rows in HBase can correspond to one Vertex, each 
representing sets of edges."

Example:
a1 - x y z
a2 - t p
a3 - k

will be

vertex "a" with edges to x y z t p k

It gives me the intuition that if there existed HBaseEdgeInputFormat, I could 
solve this case. But it doesn't exist yet.



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