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From "Tom Melendez (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-2485) reinitialize CLASSPATH variable when executing Mapper/Reducer code
Date Wed, 11 May 2011 22:03:47 GMT
reinitialize CLASSPATH variable when executing Mapper/Reducer code
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                 Key: MAPREDUCE-2485
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2485
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: pipes
    Affects Versions: 0.20.2
         Environment: Ubuntu 10.04 LTS
            Reporter: Tom Melendez


We're using pipes, and using libhdfs inside our mapper and reducer code.  We've determined
that we need to execute a putenv call in order for libhdfs to actually have access to the
CLASSPATH.  Ideally, it should just use the CLASSPATH we set when the job was executed.

For some more context, see these threads:
https://groups.google.com/a/cloudera.org/group/cdh-user/browse_thread/thread/ae9808d80fb132fb?tvc=2
http://comments.gmane.org/gmane.comp.jakarta.lucene.hadoop.user/25830



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