[FLINK-1523] Vertex-centric iteration extensions

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 0.9
• Component/s: Library / Graph Processing
• Assignee: Andra Lungu
• Reporter: Vasia Kalavri
• Created: 11/Feb/15 14:45
• Updated: 19/May/15 21:05
• Resolved: 19/May/15 21:05

Description

We would like to make the following extensions to the vertex-centric iterations of Gelly:

• allow vertices to access their in/out degrees and the total number of vertices of the graph, inside the iteration.

• allow choosing the neighborhood type (in/out/all) over which to run the vertex-centric iteration. Now, the model uses the updates of the in-neighbors to calculate state and send messages to out-neighbors. We could add a parameter with value "in/out/all" to the VertexUpdateFunction and MessagingFunction, that would indicate the type of neighborhood.