Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: hdfs-issues@hadoop.apache.org
Date: Sun, 21 Oct 2012 23:08:12 +0000 (UTC)
From: "Suresh Srinivas (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <1834689321.8043.1350860892449.JavaMail.jiratomcat@arcas>
In-Reply-To: <281189270.67058.1350606963105.JavaMail.jiratomcat@arcas>
Subject: [jira] [Updated] (HDFS-4078) Handle replication in snapshots
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


     [ https://issues.apache.org/jira/browse/HDFS-4078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Suresh Srinivas updated HDFS-4078:
----------------------------------

    Labels: needs-test  (was: )
    
> Handle replication in snapshots
> -------------------------------
>
>                 Key: HDFS-4078
>                 URL: https://issues.apache.org/jira/browse/HDFS-4078
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>              Labels: needs-test
>         Attachments: h4078_20121021.patch
>
>
> Without snapshots, file replication is the same as block replication.
> With snapshot, the file replication R_o of the original file and the file replication R_s of the snapshot file could possibly be different.  Since the blocks are shared between the original file and the snapshot file, block replication is max(R_o, R_s).  If there are more than one snapshots, block replication is the max file replication of the original file and all snapshot files.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira