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https://issues.apache.org/jira/browse/HDFS-1636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13039729#comment-13039729
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Hadoop QA commented on HDFS-1636:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12480541/HDFS-1636.r3.diff
  against trunk revision 1127823.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac 
compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) 
warnings.

    +1 release audit.  The applied patch does not increase the total number of 
release audit warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

    -1 system test framework.  The patch failed system test framework compile.

Test results: 
https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/636//testReport/
Findbugs warnings: 
https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/636//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: 
https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/636//console

This message is automatically generated.

> If dfs.name.dir points to an empty dir, namenode format shouldn't require 
> confirmation
> --------------------------------------------------------------------------------------
>
>                 Key: HDFS-1636
>                 URL: https://issues.apache.org/jira/browse/HDFS-1636
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Harsh J Chouraria
>            Priority: Minor
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1636.r1.diff, HDFS-1636.r2.diff, HDFS-1636.r3.diff
>
>
> Right now, running namenode -format when dfs.name.dir is configured to a dir 
> which exists but is empty still asks for confirmation. This is unnecessary 
> since it isn't blowing away any real data.

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