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From "Thomas Jungblut (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HAMA-571) Provide graph repair function in GraphJobRunner
Date Tue, 08 May 2012 18:09:48 GMT
Thomas Jungblut created HAMA-571:
------------------------------------

             Summary: Provide graph repair function in GraphJobRunner
                 Key: HAMA-571
                 URL: https://issues.apache.org/jira/browse/HAMA-571
             Project: Hama
          Issue Type: Improvement
          Components: bsp core, graph
            Reporter: Thomas Jungblut


As discussed here, we want to add a configurable checker that repairs maybe broken graph adjacency
lists.

http://mail-archives.apache.org/mod_mbox/incubator-hama-user/201204.mbox/%3CCAJ-%3DysmSdYoX5t1pPjGi0KXWM%3DYVN2s8CoCgw5V3jXU3F74MHw%40mail.gmail.com%3E

Currently each vertex addressed in an edge by the adjacency list is needed on the vertex map
somewhere in the cluster.
If that vertex isn't available it will result in NullPointerExceptions.
Pseudocode is attached in that mail archive.

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