Apurv Verma created HAMA-588:
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Summary: Add voteToHalt() mechanism in Graph API
Key: HAMA-588
URL: https://issues.apache.org/jira/browse/HAMA-588
Project: Hama
Issue Type: Improvement
Components: graph
Affects Versions: 0.5.0
Reporter: Apurv Verma
Currently Graph API is such that when a vertex doesn't receive any messages,
compute() is not called upon it.
One way to change it is let the user decide when the algorithm has to stop.
For this we need to add a voteToHalt() function with each vertex.
And maintain a state variable with each vertex. A vertex which has
votedToHalt() doesn't send messages in the next superstep. However if it
receives any message, its voteToHalt() ends and it is again eligible to send
messages.
When all vertices have votedToHalt() algorithm should end.
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