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From "Dmitriy V. Ryaboy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-671) Documentation change for updated configuration keys.
Date Thu, 12 May 2011 07:19:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032285#comment-13032285
] 

Dmitriy V. Ryaboy commented on HDFS-671:
----------------------------------------

Guys,

While working on getting Pig to play with 0.22, I was getting 35 errors for one of the test
cases (TestGrunt). In the process of debugging, I noticed a lot of deprecation warnings concerning
"fs.default.name" and changed the references across the Pig codebase to use fs.defaultFS,
just to silence the noise. No other code changes were made between compilations. Suddenly
the errors dropped to 13. 

I believe the cause is that Pig plays pretty loose with switching between Conf and using Properties
directly, and was using fs.default.name all over the place. Seems like the deprecation warning
and docs should user stronger language -- using the old string anywhere but in the xml file
is likely to cause problems, as illustrated by this.

> Documentation change for updated configuration keys.
> ----------------------------------------------------
>
>                 Key: HDFS-671
>                 URL: https://issues.apache.org/jira/browse/HDFS-671
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Jitendra Nath Pandey
>            Assignee: Tom White
>            Priority: Blocker
>             Fix For: 0.22.0
>
>         Attachments: HDFS-671.patch
>
>
>  HDFS-531, HADOOP-6233 and HDFS-631 have resulted in changes in several config keys.
The hadoop documentation needs to be updated to reflect those changes.

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