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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8525) Provide Improved Traceability for Configuration
Date Wed, 27 Jun 2012 12:53:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402196#comment-13402196
] 

Harsh J commented on HADOOP-8525:
---------------------------------

Overall this looks pretty good!

One comment regarding completeness: I noticed Configuration being a Writable. I've not really
seen a use of Configuration being used as Writable, but perhaps the readFields and write methods
need to be updated too, without breaking compatibility? Or we may document that serialization
via Writable will not include sources of configs.

Other than this, +1.
                
> Provide Improved Traceability for Configuration
> -----------------------------------------------
>
>                 Key: HADOOP-8525
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8525
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Trivial
>         Attachments: HADOOP-8525.txt
>
>
> Configuration provides basic traceability to see where a config setting came from, but
once the configuration is written out that information is written to a comment in the XML
and then lost the next time the configuration is read back in.  It would really be great to
be able to store a complete history of where the config came from in the XML, so that it can
then be retrieved later for debugging.

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