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From "Edward J. Yoon (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HAMA-378) Lost connection to BSP Master [host/ip:port]. Retrying...
Date Fri, 03 Feb 2012 01:51:53 GMT

     [ https://issues.apache.org/jira/browse/HAMA-378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Edward J. Yoon resolved HAMA-378.
---------------------------------

    Resolution: Invalid
      Assignee: Edward J. Yoon
    
> Lost connection to BSP Master [host/ip:port].  Retrying... 
> -----------------------------------------------------------
>
>                 Key: HAMA-378
>                 URL: https://issues.apache.org/jira/browse/HAMA-378
>             Project: Hama
>          Issue Type: Improvement
>          Components: bsp
>            Reporter: ChiaHung Lin
>            Assignee: Edward J. Yoon
>            Priority: Minor
>
> When submitting a job, at the server side the GroomServer reports message
>     Lost connection to BSP Master [host/ip:port].  Retrying... java.lang.NullPointerException
> This seems because the script hama only includes jar files (such as hama-0.3.0-examples.jar)
located under basedir, the same folder as build.xml. Also, a quick check shows that when submitting
a job, the ClassLader used is sun.misc.Launcher$AppClassLoader, instead of java.net.URLClassLoader.
This might not be the root cause, but a further investigation may be required. 

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