Hi All, I am taking input graph in the form of 2 separate files "Edge-List" and "Vertex-List". In Vertex-List file, a vertex can have multiple values (value of vertex is of text format) i.e. there can be multiple entries of vertex-value pair for same vertex.
While taking input of a vertex in Giraph, it checks whether if vertex is already present in graph, then it replaces the old value with new value of vertex. I want to append all the vertex values for the same vertex (String format). I can do it by changing the giraph-core's source code. But, I am looking for a solution in which while taking input using vertex-input class, it is possible retrieve old value of that vertex. Is it possible to do what I am proposing ? Can I retrieve the value of vertex using Vertex Id in vertex-input class ? Thanks Harsh Rathi IIT Delhi
