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https://issues.apache.org/jira/browse/HADOOP-9344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe resolved HADOOP-9344.
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Resolution: Duplicate
Looks like this was fixed by HADOOP-10178.
> Configuration.writeXml can warn about deprecated properties user did not set
> ----------------------------------------------------------------------------
>
> Key: HADOOP-9344
> URL: https://issues.apache.org/jira/browse/HADOOP-9344
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Affects Versions: 2.0.3-alpha, 0.23.5
> Reporter: Jason Lowe
> Assignee: Rushabh S Shah
>
> When the configuration is serialized it can emit warnings about deprecated
> properties that the user did not specify. Converting the config to XML
> causes all the properties in the config to be processed for deprecation, and
> after HADOOP-8167 setting a proper config property also causes the deprecated
> forms to be set. Processing all the keys in the config for deprecation
> therefore can trigger warnings for keys that were never specified by the
> user, leaving users confused as to how their code could be triggering these
> warnings.
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