hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8797) Prevent merging regions from moving during online merge
Date Tue, 25 Jun 2013 03:47:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13692723#comment-13692723
] 

Jimmy Xiang commented on HBASE-8797:
------------------------------------

Normally, it should not move.  But if load balancer thinks this region server has too many
regions, it could move some regions to other server, right?
Although the chance is low, the consequence is very bad.  Therefore, we should be sure it
won't happen.
                
> Prevent merging regions from moving during online merge
> -------------------------------------------------------
>
>                 Key: HBASE-8797
>                 URL: https://issues.apache.org/jira/browse/HBASE-8797
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>
> When two regions are merged online, they are closed but master doesn't know they should
stay closed during the merge.  If master moves them by mistake, for example, load balancer
kicks in, the merge could be messed up.

--
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

Mime
View raw message