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https://issues.apache.org/jira/browse/HADOOP-6602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12839991#action_12839991
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Amareshwari Sriramadasu commented on HADOOP-6602:
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This is bug in Configuration and is fixed by HADOOP-6103.
> 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
> Fix For: 0.20.1
>
>
> 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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