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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3275) Format command overwrites contents of non-empty shared edits dir if name dirs are empty without any prompting
Date Tue, 24 Apr 2012 17:59:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13260761#comment-13260761
] 

Aaron T. Myers commented on HDFS-3275:
--------------------------------------

Hey Amith,

The comment still isn't formatted correctly. Instead of this:

{code}
+  /** Sets the required configurations for performing failover
+   *  without any dependency on MiniDFSCluster
+   */
{code}

It should be like this:

{code}
+  /**
+   * Sets the required configurations for performing failover
+   * without any dependency on MiniDFSCluster
+   */
{code}
                
> 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.patch, HDFS-3275_1.patch, HDFS-3275_1.patch, HDFS-3275_2.patch,
HDFS-3275_2.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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