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https://issues.apache.org/jira/browse/HADOOP-9854?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated HADOOP-9854:
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Priority: Major (was: Blocker)
> Configuration.set() may be called before all the deprecated keys are
> registered, causing inconsistent state
> -----------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-9854
> URL: https://issues.apache.org/jira/browse/HADOOP-9854
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Affects Versions: 2.0.5-alpha
> Reporter: Sangjin Lee
>
> Currently deprecated keys are registered at various times. Some are
> registered when the Configuration class itself is initialized, but the vast
> majority are registered when the JobConf class is initialized.
> Therefore, it is entirely possible (and does happen) that Configuration.set()
> is called for a key before its deprecation mapping is registered, thus
> leaving the internal state of Configuration in an inconsistent state.
> We actually had this problem occur in real life, causing the set value not to
> be recognized.
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