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From "Liang Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5844) Delete the region servers znode after a regions server crash
Date Tue, 21 May 2013 03:01:19 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662615#comment-13662615
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Liang Lee commented on HBASE-5844:
----------------------------------

And I still have another question:in the hbase-daemon.sh file,in the cleanZNode() funtion
,which znode is deleted ?
Under the normal scenario,when RegionServer starts ,it will create temporary znode on Zookeeper
in the path /habse/rs,and what we delete in the cleanZNode() funtion ?
Thank you!
                
> Delete the region servers znode after a regions server crash
> ------------------------------------------------------------
>
>                 Key: HBASE-5844
>                 URL: https://issues.apache.org/jira/browse/HBASE-5844
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver, scripts
>    Affects Versions: 0.95.2
>            Reporter: Nicolas Liochon
>            Assignee: Nicolas Liochon
>             Fix For: 0.95.0
>
>         Attachments: 5844.v1.patch, 5844.v2.patch, 5844.v3.patch, 5844.v3.patch, 5844.v4.patch
>
>
> today, if the regions server crashes, its znode is not deleted in ZooKeeper. So the recovery
process will stop only after a timeout, usually 30s.
> By deleting the znode in start script, we remove this delay and the recovery starts immediately.

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