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From "Thomas Jungblut (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HAMA-571) Provide graph repair function in GraphJobRunner
Date Tue, 15 May 2012 17:44:22 GMT

     [ https://issues.apache.org/jira/browse/HAMA-571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Thomas Jungblut reassigned HAMA-571:

    Assignee: Thomas Jungblut
> 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
>            Assignee: 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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