Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Message-ID: <24120877.183731278111589980.JavaMail.jira@thor>
Date: Fri, 2 Jul 2010 18:59:49 -0400 (EDT)
From: "Jean-Daniel Cryans (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Subject: [jira] Commented: (HBASE-2802) Stop daughter regions both being
 assigned same server
In-Reply-To: <1179142.104431277776789392.JavaMail.jira@thor>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/HBASE-2802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12884846#action_12884846 ] 

Jean-Daniel Cryans commented on HBASE-2802:
-------------------------------------------

IMO this issue is a workaround for the master's inability to balance on requests load (instead of regions). With better load balancing, we should do a better job at redistributing regions on the cluster so this patch won't be needed.

> Stop daughter regions both being assigned same server
> -----------------------------------------------------
>
>                 Key: HBASE-2802
>                 URL: https://issues.apache.org/jira/browse/HBASE-2802
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: stack
>             Fix For: 0.20.6, 0.21.0
>
>         Attachments: moz.txt
>
>
> On split, usually the two daughter regions end up on assignment list at same time.  Dependent on cluster state and what balancer says, when a server checks in, we'll assign at least two regions in the one go so daughters then end up on same server.  This patch makes it so we don't assign contiguous regions in the one assignment.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.