[jira] [Resolved] (HAMA-571) Provide graph repair function in GraphJobRunner

["Thomas Jungblut (JIRA)" <ji...@apache.org>]

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

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: https://issues.apache.org/jira/browse/HAMA-571
>             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.
> 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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