hama-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thomas Jungblut (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-378) Lost connection to BSP Master [host/ip:port]. Retrying...
Date Wed, 27 Apr 2011 06:18:03 GMT

    [ https://issues.apache.org/jira/browse/HAMA-378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13025632#comment-13025632

Thomas Jungblut commented on HAMA-378:

Yea, this could be the problem... But this is basically the same in Hadoop's source code.
The only difference is that this class searching is invoked in the context of a configuration.

> 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
>            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. 

This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

View raw message