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Date: Thu, 15 Mar 2012 13:59:39 +0000 (UTC)
From: "Hudson (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HADOOP-8167) Configuration deprecation logic
 breaks backwards compatibility
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    [ https://issues.apache.org/jira/browse/HADOOP-8167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230174#comment-13230174 ] 

Hudson commented on HADOOP-8167:
--------------------------------

Integrated in Hadoop-Mapreduce-trunk #1020 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1020/])
    HADOOP-8167. Configuration deprecation logic breaks backwards compatibility (tucu) (Revision 1300642)

     Result = FAILURE
tucu : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1300642
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/conf/TestConfigurationDeprecation.java

                
> Configuration deprecation logic breaks backwards compatibility
> --------------------------------------------------------------
>
>                 Key: HADOOP-8167
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8167
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.24.0, 0.23.3
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>            Priority: Blocker
>             Fix For: 0.23.3
>
>         Attachments: HADOOP-8167.patch
>
>
> The deprecated Configuration logic works as follows:
> For a dK deprecated key in favor of nK:
> * on set(dK, V), it stores (nK,V)
> * on get(dK) it does a reverseLookup of dK to nK and looks for get(nK)
> While this works fine for single set/get operations, the iterator() method that returns an iterator of all config key/values, returns only the new keys.
> This breaks applications that did a set(dK, V) and expect, when iterating over the configuration to find (dK, V).

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