Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Date: Mon, 16 Jan 2012 03:05:42 +0000 (UTC)
From: "chunhui shen (Updated) (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: 
 <592185712.43477.1326683142365.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <321763520.29021.1326264879420.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Updated] (HBASE-5179) Concurrent processing of
 processFaileOver and ServerShutdownHandler may cause region to be assigned
 before log splitting is completed, causing data loss
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


     [ https://issues.apache.org/jira/browse/HBASE-5179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

chunhui shen updated HBASE-5179:
--------------------------------

    Attachment: hbase-5179v7.patch

v6 has a collision for the trunk
                
> Concurrent processing of processFaileOver and ServerShutdownHandler may cause region to be assigned before log splitting is completed, causing data loss
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-5179
>                 URL: https://issues.apache.org/jira/browse/HBASE-5179
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.90.2
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>            Priority: Critical
>             Fix For: 0.92.0, 0.94.0, 0.90.6
>
>         Attachments: 5179-90.txt, 5179-90v2.patch, 5179-90v3.patch, 5179-90v4.patch, 5179-v2.txt, 5179-v3.txt, 5179-v4.txt, hbase-5179.patch, hbase-5179v5.patch, hbase-5179v6.patch, hbase-5179v7.patch
>
>
> If master's processing its failover and ServerShutdownHandler's processing happen concurrently, it may appear following  case.
> 1.master completed splitLogAfterStartup()
> 2.RegionserverA restarts, and ServerShutdownHandler is processing.
> 3.master starts to rebuildUserRegions, and RegionserverA is considered as dead server.
> 4.master starts to assign regions of RegionserverA because it is a dead server by step3.
> However, when doing step4(assigning region), ServerShutdownHandler may be doing split log, Therefore, it may cause data loss.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira