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https://issues.apache.org/jira/browse/HADOOP-7287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers updated HADOOP-7287:
-----------------------------------
Attachment: hadoop-7287-trunk.2.patch
Updated patch which prints a warning message when the deprecated key is
accessed.
> Configuration deprecation mechanism doesn't work properly for
> GenericOptionsParser/Tools
> ----------------------------------------------------------------------------------------
>
> Key: HADOOP-7287
> URL: https://issues.apache.org/jira/browse/HADOOP-7287
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Affects Versions: 0.22.0, 0.23.0
> Reporter: Todd Lipcon
> Assignee: Aaron T. Myers
> Priority: Blocker
> Fix For: 0.22.0, 0.23.0
>
> Attachments: hadoop-7287-still-broken.txt, hadoop-7287-testcase.txt,
> hadoop-7287-trunk.0.patch, hadoop-7287-trunk.1.patch,
> hadoop-7287-trunk.2.patch
>
>
> For example, you can't use -D options on the "hadoop fs" command line in
> order to specify the deprecated names of configuration options. The issue is
> that the ordering is:
> - JVM starts
> - GenericOptionsParser creates a Configuration object and calls set() for
> each of the options specified on command line
> - DistributedFileSystem or other class eventually instantiates
> HdfsConfiguration which adds the deprecations
> - Some class calls conf.get("new key") and sees the default instead of the
> version set on the command line
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