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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3833) ability to support includes/excludes list in Hbase
Date Mon, 23 May 2011 17:21:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13038067#comment-13038067
] 

stack commented on HBASE-3833:
------------------------------

bq. In short, maybe we need a "force" option in decommissioning, which if used, does not wait
for a graceful shutdown of the specified regionserver, instead declares it dead immediately
and then follows the normal course of action (lease recovery, reassign regions, etc)

Agreed.  Seems like this patch does the 'forced' option.  Missing from this patch (though
available as a script) is the graceful decommission.  Vishal, were you going for the 'forced'
option only?  If so, should we commit this patch as is (though I think it dangerous if misunderstood
and user is not clear that excludes means 'forced' decommission).

> ability to support includes/excludes list in Hbase
> --------------------------------------------------
>
>                 Key: HBASE-3833
>                 URL: https://issues.apache.org/jira/browse/HBASE-3833
>             Project: HBase
>          Issue Type: Improvement
>          Components: client, regionserver
>    Affects Versions: 0.90.2
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>         Attachments: excl-patch.txt, excl-patch.txt
>
>
> An HBase cluster currently does not have the ability to specify that the master should
accept regionservers only from a specified list. This helps preventing administrative errors
where the same machine could be included in two clusters. It also allows the administrator
to easily remove un-ssh-able machines from the cluster.

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