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Date: Sat, 17 Nov 2012 00:47:12 +0000 (UTC)
From: "Jing Zhao (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-4196) Support renaming of snapshots
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    [ https://issues.apache.org/jira/browse/HDFS-4196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499283#comment-13499283 ] 

Jing Zhao commented on HDFS-4196:
---------------------------------

Yeah, I left it there because we need to change the visibility of FSDir locking methods when moving FSDir locking from FSNS to SnapshotManager. Also the necessity of FSDir can be revisited since it seems nothing changes the FSDir without grabbing the FSNS lock (as you mentioned). Thus we can revisit/refactor the lock in a separate jira. 
                
> Support renaming of snapshots
> -----------------------------
>
>                 Key: HDFS-4196
>                 URL: https://issues.apache.org/jira/browse/HDFS-4196
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: data-node, name-node
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-4196.001.patch, HDFS-4196.002.patch, HDFS-4196.003.patch, HDFS-4196.004.patch
>
>
> Add the functionality of renaming an existing snapshot with a given new name.

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