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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-359) Development of Shortest Path Finding Algorithm
Date Mon, 09 May 2011 04:26:03 GMT

    [ https://issues.apache.org/jira/browse/HAMA-359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030600#comment-13030600
] 

Edward J. Yoon commented on HAMA-359:
-------------------------------------

This patch works only on single node.

{code}
21:33,605 INFO org.apache.hadoop.ipc.Server: IPC Server handler 7 on 49258: starting
2011-05-09 13:21:33,605 INFO org.apache.hadoop.ipc.Server: IPC Server handler 8 on 49258:
starting
2011-05-09 13:21:33,605 INFO org.apache.hadoop.ipc.Server: IPC Server handler 9 on 49258:
starting
2011-05-09 13:21:33,605 INFO org.apache.hama.bsp.GroomServer: GroomServer up at: localhost/127.0.0.1:49258
2011-05-09 13:21:33,605 INFO org.apache.hama.bsp.GroomServer: Starting groom: groomd_cnode2.cloud_61000
2011-05-09 13:21:38,416 INFO org.apache.hama.bsp.TaskRunner: attempt_201105091307_0001_000001_0
11/05/09 13:21:38 WARN util.NativeCodeLoader: Unable t                 o load native-hadoop
library for your platform... using builtin-java classes where applicable
2011-05-09 13:21:38,416 INFO org.apache.hama.bsp.TaskRunner: attempt_201105091307_0001_000001_0
11/05/09 13:21:38 INFO compress.CodecPool: Got brand-n                 ew decompressor
2011-05-09 13:21:38,671 INFO org.apache.hama.bsp.TaskRunner: attempt_201105091307_0001_000001_0
11/05/09 13:21:38 WARN bsp.GroomServer: Error running                  child
2011-05-09 13:21:38,671 INFO org.apache.hama.bsp.TaskRunner: attempt_201105091307_0001_000001_0
java.lang.NullPointerException
2011-05-09 13:21:38,671 INFO org.apache.hama.bsp.TaskRunner: attempt_201105091307_0001_000001_0
        at org.apache.hama.examples.ShortestPaths.bsp(                 ShortestPaths.java:92)
2011-05-09 13:21:38,672 INFO org.apache.hama.bsp.TaskRunner: attempt_201105091307_0001_000001_0
        at org.apache.hama.bsp.BSPTask.run(BSPTask.jav                 a:54)
2011-05-09 13:21:38,672 INFO org.apache.hama.bsp.TaskRunner: attempt_201105091307_0001_000001_0
        at org.apache.hama.bsp.GroomServer$Child.main(                 GroomServer.java:849)
{code}

> 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: Thomas Jungblut
>              Labels: gsoc, gsoc2011, mentor
>             Fix For: 0.3.0
>
>         Attachments: eddie.patch
>
>   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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