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From "William Kinney (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-6602) ClassLoader (Configuration#setClassLoader) in new Job API (0.20) does not work
Date Mon, 01 Mar 2010 17:21:05 GMT
ClassLoader (Configuration#setClassLoader) in new Job API (0.20) does not work

                 Key: HADOOP-6602
                 URL: https://issues.apache.org/jira/browse/HADOOP-6602
             Project: Hadoop Common
          Issue Type: Bug
          Components: conf
    Affects Versions: 0.20.1
         Environment: Cloudera Hadoop 0.20.1+152

            Reporter: William Kinney

new Job/Configuration API's setClassLoader (Configuration#setClassLoader) gets overwritten
w/ {{Thread.currentThread().getContextClassLoader()}} when invoking Job#submit. 

Upon class to Job#submit, JobClient#submitJobInternal invokes {{JobContext context = new JobContext(job,
jobId);}}, which in the constructor for org.apache.hadoop.mapreduce.JobContext, wraps Job
w/ new JobConf and therefore overwrites set classLoader member @ Configuration via a init
block w/ {{classLoader =  Thread.currentThread().getContextClassLoader();}}

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