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From "Mikalai Parafeniuk (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HAMA-524) [GSoC 2012] Sparse Matrix-Vector multiplication (SpMV) on Hama
Date Mon, 06 Aug 2012 12:35:02 GMT

     [ https://issues.apache.org/jira/browse/HAMA-524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Mikalai Parafeniuk updated HAMA-524:

    Attachment: eof_exception.zip

Hi Suraj. I checked that I am running hdfs and hama from the same user one more time. Now
I am getting EOFException. Also I have found some suspicious lines in log files.
Hadoop NameNode log:
2012-08-06 15:12:01,283 WARN org.apache.hadoop.ipc.Server: Incorrect header or version mismatch
from got version 4 expected version 3
Hama BspMaster log:
2012-08-06 15:12:01,297 ERROR org.apache.hama.bsp.BSPMaster: Can't get connection to Hadoop
java.io.IOException: Call to localhost/ failed on local exception: java.io.EOFException

Maybe the problem is that I have installed incompatible versions of Hadoop and Hama? I attached
file with typescript of my terminal session and hadoop and hama log files. Typescript can
be viewed in readable version with help of cat command. Configuration is the same, as in previous
> [GSoC 2012] Sparse Matrix-Vector multiplication (SpMV) on Hama
> --------------------------------------------------------------
>                 Key: HAMA-524
>                 URL: https://issues.apache.org/jira/browse/HAMA-524
>             Project: Hama
>          Issue Type: New Feature
>          Components: bsp core, examples, math
>            Reporter: Edward J. Yoon
>            Assignee: Mikalai Parafeniuk
>              Labels: gsoc, gsoc2012, newbie
>         Attachments: HAMA-524.patch, SpMV_v01.patch, broken_pipe_exception.zip, eof_exception.zip,
> Implement Efficient and Fast SpMV algorithm which can be widely used in scientiļ¬c computing,
financial modeling, information retrieval, and others, using Hama Bulk Synchronous Parallel

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