[ https://issues.apache.org/jira/browse/HDFS-3275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13265674#comment-13265674 ] 

Hudson commented on HDFS-3275:
------------------------------

Integrated in Hadoop-Common-trunk-Commit #2161 (See [https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2161/])
    HDFS-3275. Skip format for non-file based directories. Contributed by Amith D K. (Revision 1332527)

     Result = SUCCESS
umamahesh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1332527
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestAllowFormat.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/HATestUtil.java

                
> Format command overwrites contents of non-empty shared edits dir if name dirs are empty without any prompting
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3275
>                 URL: https://issues.apache.org/jira/browse/HDFS-3275
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, name-node
>    Affects Versions: 2.0.0
>            Reporter: Vinithra Varadharajan
>            Assignee: amith
>             Fix For: 3.0.0
>
>         Attachments: HDFS-3275-4.patch, HDFS-3275.patch, HDFS-3275_1.patch, HDFS-3275_1.patch, HDFS-3275_2.patch, HDFS-3275_2.patch, HDFS-3275_3.patch
>
>
> To reproduce:
> # Configure a NameNode with namedirs and a shared edits dir, all of which are empty.
> # Run hdfs namenode -format. Namedirs and shared edits dir gets populated.
> # Delete the contents of the namedirs. Leave the shared edits dir as is. Check the timestamps of the shared edits dir contents.
> # Run format again. The namedirs as well as the shared edits dir get formatted. The shared edits dir's contents have been replaced without any prompting.

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