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https://issues.apache.org/jira/browse/HADOOP-13399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15388511#comment-15388511
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Sean Busbey commented on HADOOP-13399:
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Deprecate in branch-2 and remove in one of the 3.0 alphas?
> deprecate the Configuration classloader
> ---------------------------------------
>
> Key: HADOOP-13399
> URL: https://issues.apache.org/jira/browse/HADOOP-13399
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: util
> Reporter: Sangjin Lee
> Assignee: Sangjin Lee
> Priority: Critical
>
> Today, anyone can simply call {{Configuration.setClassLoader()}} to set the
> configuration classloader to any arbitrary classloader. This classloader is
> then used to get a class or a resource through {{Configuration}}
> ({{getClass()}} and {{getResource()}}).
> In essence, the {{Configuration}} classloader is effectively a globally
> shared classloader without contract. This is one step worse than TCCL in that
> regard.
> I propose to remove/deprecate {{setClassLoader()}} and {{getClassLoader()}}
> and simply use TCCL (and then the classloader that loaded the
> {{Configuration}} class) to load classes and resources.
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