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Posted to hdfs-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2012/10/19 02:34:03 UTC

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

Tsz Wo (Nicholas), SZE created HDFS-4076:
--------------------------------------------

             Summary: 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
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Tsz Wo (Nicholas), SZE


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

Posted by "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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