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From "Thomas Jungblut (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-359) Development of Shortest Path Finding Algorithm
Date Fri, 08 Apr 2011 06:08:05 GMT

    [ https://issues.apache.org/jira/browse/HAMA-359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13017302#comment-13017302
] 

Thomas Jungblut commented on HAMA-359:
--------------------------------------

So I found that that bsp dijkstra won't deal with not connected graphs properly, I fixed that
with the good old mapreduce vertex update counter :D
So the mainloop is now:
while(updated)
// do stuff
and not
while(we not visited all vertices)
// do stuff

If I would be evil, we could provide a real simple version of dijkstra in the next hama version
with the wikipedia example I used.
So you would have a scalable and a teaching example.

> Development of Shortest Path Finding Algorithm
> ----------------------------------------------
>
>                 Key: HAMA-359
>                 URL: https://issues.apache.org/jira/browse/HAMA-359
>             Project: Hama
>          Issue Type: New Feature
>          Components: examples
>    Affects Versions: 0.2.0
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>              Labels: gsoc, gsoc2011, mentor
>             Fix For: 0.3.0
>
>   Original Estimate: 2016h
>  Remaining Estimate: 2016h
>
> The goal of this project is development of parallel algorithm for finding a Shortest
Path using Hama BSP.

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