[jira] [Resolved] (HDFS-4076) Support snapshot of single files

["Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-4076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo (Nicholas), SZE resolved HDFS-4076.
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       Resolution: Fixed
    Fix Version/s: HDFS-2802
     Hadoop Flags: Reviewed

I have committed this.
                
> Support snapshot of single files
> --------------------------------
>
>                 Key: HDFS-4076
>                 URL: https://issues.apache.org/jira/browse/HDFS-4076
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: HDFS-2802
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>             Fix For: HDFS-2802
>
>         Attachments: h4076_20121018.patch, h4076_20121019.patch
>
>
> The snapshot of a file shares the blocks with the original file in order to avoid copying data.  However, the snapshot file has its own metadata so that it could have independent permission, replication, access time, etc.

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