Arun Suresh updated GIRAPH-96:

          Component/s: bsp
    Affects Version/s: 0.70.0
> Support for Graphs with Huge adjacency lists
> --------------------------------------------
>                 Key: GIRAPH-96
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-96
>             Project: Giraph
>          Issue Type: Improvement
>          Components: bsp
>    Affects Versions: 0.70.0
>            Reporter: Arun Suresh
> Currently the vertex initialize() method is passed the complete adjacency 
> list as a HashMap. All the current concrete implementations of Vertex iterate 
> over the adjacency list and recreate new Data Structures within the Vertex 
> instance to hold/manipulate the adjacency list. This would seize to be 
> feasible once the size of the adjacency list becomes really huge.
> I propose storing the adjacency list and all vertex information (and incoming 
> messages ?) in a distributed data store such as HBase. The adjacency list can 
> be lazily loaded via HBase Scans. I was thinking of an HBase schema where the 
> row Id is a concatenation of VertexID+OutboundVertexId with a single column 
> containing the edge.

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