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From "Thomas Jungblut (JIRA)" <>
Subject [jira] [Resolved] (HAMA-571) Provide graph repair function in GraphJobRunner
Date Thu, 17 May 2012 13:09:07 GMT


Thomas Jungblut resolved HAMA-571.

       Resolution: Fixed
    Fix Version/s: 0.5.0

Thanks! I think graph package does not work in distributed mode currently because of aggregators,
but I try to fix this in HAMA-575.
> Provide graph repair function in GraphJobRunner
> -----------------------------------------------
>                 Key: HAMA-571
>                 URL:
>             Project: Hama
>          Issue Type: Improvement
>          Components: bsp core, graph
>            Reporter: Thomas Jungblut
>            Assignee: Thomas Jungblut
>             Fix For: 0.5.0
>         Attachments: HAMA-571_2.patch, HAMA-571_windows_first.patch
> As discussed here, we want to add a configurable checker that repairs maybe broken graph
adjacency lists.
> 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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