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From "Jesse Yates (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5547) Don't delete HFiles when in "backup mode"
Date Tue, 01 May 2012 08:49:46 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesse Yates updated HBASE-5547:
-------------------------------

    Attachment: java_HBASE-5547_v4.patch

Attaching patch rebased on trunk (but otherwise same as RB) as per request.
                
> Don't delete HFiles when in "backup mode"
> -----------------------------------------
>
>                 Key: HBASE-5547
>                 URL: https://issues.apache.org/jira/browse/HBASE-5547
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Lars Hofhansl
>            Assignee: Jesse Yates
>         Attachments: java_HBASE-5547_v4.patch
>
>
> This came up in a discussion I had with Stack.
> It would be nice if HBase could be notified that a backup is in progress (via a znode
for example) and in that case either:
> 1. rename HFiles to be delete to <file>.bck
> 2. rename the HFiles into a special directory
> 3. rename them to a general trash directory (which would not need to be tied to backup
mode).
> That way it should be able to get a consistent backup based on HFiles (HDFS snapshots
or hard links would be better options here, but we do not have those).
> #1 makes cleanup a bit harder.

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