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From "Bill Graham (JIRA)" <j...@apache.org>
Subject [jira] Created: (CHUKWA-440) Custom processor classes not detected unless added to chukwa-core jar
Date Wed, 23 Dec 2009 06:45:29 GMT
Custom processor classes not detected unless added to chukwa-core jar
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                 Key: CHUKWA-440
                 URL: https://issues.apache.org/jira/browse/CHUKWA-440
             Project: Hadoop Chukwa
          Issue Type: Bug
          Components: Data Processors
            Reporter: Bill Graham


http://wiki.apache.org/hadoop/DemuxModification

After implementing a custom parser as shown in the wiki link above and mapping it to a data
type in chukwa-demux.xml, there's no easy way to register the class so it gets included in
the job that's submitted to the hadoop cluster. I've added my jar containing the class to
the lib/ directory of the chukwa data processor install and verified that it's in the classapath,
but it's not submitted with the Hadoop job. On the Hadoop cluster ClassNotFoundExceptions
are thrown in my mapper.

The only way I've been able to make this work is to do the following: 
1. put my class in the package org.apache.hadoop.chukwa.extraction.demux.processor.mapper
2. then manually add that class to the chukwa-core-0.3.0.jar that is on my data processor

Instead, the class should be detected from whatever jar it lives in that's in the demux class
path, regardless of the package it lives in.

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