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Date: Sat, 12 Nov 2011 04:50:51 +0000 (UTC)
From: "Ted Yu (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-4478) Improve
 AssignmentManager.handleRegion so that it can process certain ZK state in
 the case of RS offline
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    [ https://issues.apache.org/jira/browse/HBASE-4478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13148988#comment-13148988 ] 

Ted Yu commented on HBASE-4478:
-------------------------------

Integrated to 0.92 and TRUNK.

Thanks for the patch Ramkrishna.

Thanks for the review Stack.
                
> Improve AssignmentManager.handleRegion so that it can process certain ZK state in the case of RS offline
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4478
>                 URL: https://issues.apache.org/jira/browse/HBASE-4478
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ming Ma
>            Assignee: ramkrishna.s.vasudevan
>         Attachments: 4478-v2.txt, HBASE-4478_1.patch
>
>
> Currently AssignmentManager.handleRegion skips processing of ZK event change if the RS is offline. It relies on TimeoutMonitor and ServerShutdownHandler to process RIT.
>       // Verify this is a known server
>       if (!serverManager.isServerOnline(sn) &&
>           !this.master.getServerName().equals(sn)) {
>         LOG.warn("Attempted to handle region transition for server but " +
>           "server is not online: " + Bytes.toString(data.getRegionName()));
>         return;
>       }
> For certain states like OPENED, OPENING, FAILED_OPEN, CLOSED, it can continue the progressing even if the RS is offline.

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