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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7735) Prevent regions from moving during online snapshot.
Date Fri, 01 Feb 2013 23:26:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13569239#comment-13569239
] 

Enis Soztutar commented on HBASE-7735:
--------------------------------------

+1 on table locks. The patches are already there in HBASE-7305 and HBASE-7546. 
                
> Prevent regions from moving during online snapshot.
> ---------------------------------------------------
>
>                 Key: HBASE-7735
>                 URL: https://issues.apache.org/jira/browse/HBASE-7735
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Jonathan Hsieh
>
> To increase the probability of snapshots succeeding, we should attempt to prevent splits
and region moves from happening.  Currently we take region locks but this could be "too late"
and results in an aborted snapshot.  
> We should probably take the table lock (0.96) when starting a snapshot and for  a 0.94
backport we should probably disable the balancer.
> This will probably not be tackled until after trunk merge.

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