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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3612) Single namenode image directory config warning can be improved
Date Fri, 13 Jul 2012 07:52:36 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413564#comment-13413564
] 

Hudson commented on HDFS-3612:
------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #2527 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2527/])
    HDFS-3612. Single namenode image directory config warning can be improved. Contributed
by Andy Isaacson. (harsh) (Revision 1361059)

     Result = SUCCESS
harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1361059
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

                
> Single namenode image directory config warning can be improved
> --------------------------------------------------------------
>
>                 Key: HDFS-3612
>                 URL: https://issues.apache.org/jira/browse/HDFS-3612
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 2.0.0-alpha
>            Reporter: Harsh J
>            Assignee: Andy Isaacson
>            Priority: Trivial
>              Labels: newbie
>             Fix For: 2.0.1-alpha
>
>         Attachments: hdfs3612-2.txt, hdfs3612.txt
>
>
> Currently, if you configure the NameNode to run with just one dfs.namenode.name.dir directory,
it prints:
> {code}
> 12/07/08 20:00:22 WARN namenode.FSNamesystem: Only one dfs.namenode.name.dir directory
configured , beware data loss!{code}
> We can improve this in a few ways as it is slightly ambiguous:
> # Fix punctuation spacing, there's always a space after a punctuation mark but never
before one.
> # Perhaps the message is better printed with a reason of why it may cause a scare of
data loss. For instance, we can print "Detected a single storage directory in dfs.namenode.name.dir
configuration. Beware of dataloss due to lack of redundant storage directories" or so.

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