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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-455) Make NN and DN handle in a intuitive way comma-separated configuration strings
Date Tue, 16 Nov 2010 20:42:15 GMT

    [ https://issues.apache.org/jira/browse/HDFS-455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12932646#action_12932646
] 

Eli Collins commented on HDFS-455:
----------------------------------

+1

Verified paths specified in NAMENODE*DIR_KEY can now have spaces.

{noformat}
     [exec] 
     [exec] -1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     -1 tests included.  The patch doesn't appear to include any new 
or modified tests.
     [exec]                         Please justify why no new tests are needed for this patch.
     [exec]                         Also please list what manual steps were performed to verify
this patch.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     -1 release audit.  The applied patch generated 103 release audit warnings
(more than the trunk's current 1 warnings).
     [exec] 
     [exec]     +1 system test framework.  The patch passed system test framework compile.
     [exec] 
{noformat}

> Make NN and DN handle in a intuitive way comma-separated configuration strings
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-455
>                 URL: https://issues.apache.org/jira/browse/HDFS-455
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node, name-node
>    Affects Versions: 0.20.1, 0.21.0
>            Reporter: Michele Catasta
>            Assignee: Michele Catasta
>            Priority: Minor
>         Attachments: HDFS-455.patch, hdfs-455.txt
>
>
> The following configuration causes problems:
> <property>
> <name>dfs.data.dir</name>
> <value>/mnt/hstore2/hdfs, /home/foo/dfs</value> 
> </property>
> The problem is that the space after the comma causes the second directory for storage
to be " /home/foo/dfs" which is in a directory named <SPACE> which contains a sub-dir
named "home" in the hadoop datanodes default directory. This will typically cause the user's
home partition to fill, but will be very hard for the user to understand since a directory
with a whitespace name is hard to understand.
> (ripped from HADOOP-2366)

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