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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7287) Configuration deprecation mechanism doesn't work properly for GenericOptionsParser/Tools
Date Wed, 18 May 2011 22:14:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035786#comment-13035786
] 

Aaron T. Myers commented on HADOOP-7287:
----------------------------------------

HDFS tests which failed:

org.apache.hadoop.tools.TestJMXGet
org.apache.hadoop.hdfs.server.namenode.TestBlocksWithNotEnoughRacks
org.apache.hadoop.hdfs.TestDecommission
org.apache.hadoop.hdfs.TestDatanodeBlockScanner
org.apache.hadoop.hdfs.TestHDFSTrash

All of which, I believe, are known to be flaky or failing. I was able to run TestBlocksWithNotEnoughRacks,
TestDecommission, and TestDatanodeBlockScanner individually, and they passed.

Running the M/R tests now.

> 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-testcase.txt, hadoop-7287-trunk.0.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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