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From "Thomas Jungblut (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HAMA-642) Make GraphRunner disk based
Date Fri, 14 Sep 2012 07:28:09 GMT
Thomas Jungblut created HAMA-642:

             Summary: Make GraphRunner disk based
                 Key: HAMA-642
                 URL: https://issues.apache.org/jira/browse/HAMA-642
             Project: Hama
          Issue Type: Improvement
          Components: graph
            Reporter: Thomas Jungblut

To improve scalability we can improve the graph runner to be disk based.

Which basically means:

- We have just a single Vertex instance that get's refilled.
- We directly write vertices to disk after partitioning
- In every superstep we iterate over the vertices on disk, fill the vertex instance and call
the users compute functions

- State other than vertex value can't be stored easy

So I think we should make the graph runner more hybrid, like using the queues we have implemented
in the messaging. So the graphrunner can be configured to run completely on disk, in cached
mode or in in-memory mode.

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