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From "Jonathan Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6283) [region_mover.rb] Add option to exclude list of hosts on unload instead of just assuming the source node.
Date Wed, 04 Jul 2012 00:05:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406189#comment-13406189

Jonathan Hsieh commented on HBASE-6283:

@Stack I'll look into making it throw an exn or at least print a nice warning message.

Thanks for the pointer to Aravind's work -- this is the first I've seen the blog.  Have we
encouraged Aravind to contribute his work?
> [region_mover.rb] Add option to exclude list of hosts on unload instead of just assuming
the source node.
> ---------------------------------------------------------------------------------------------------------
>                 Key: HBASE-6283
>                 URL: https://issues.apache.org/jira/browse/HBASE-6283
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jonathan Hsieh
>            Assignee: Jonathan Hsieh
>              Labels: jruby
>         Attachments: hbase-6283.patch
> Currently, the region_mover.rb script excludes a single host, the host offloading data,
as a region move target.  This essentially limits the number of machines that can be shutdown
at a time to one.  For larger clusters, it is manageable to have several nodes down at a time
and desirable to get this process done more quickly.
> The proposed patch adds an exclude file option, that allows multiple hosts to be excluded
as targets.

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