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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3866) Script to add regions gradually to a new regionserver.
Date Wed, 05 Sep 2012 05:59:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13448506#comment-13448506
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stack commented on HBASE-3866:
------------------------------

I don't think it should go into the code base as is as per above.  These scripts tend to rot.

You want to close it?  If closed, the script is available still if someone wants it.  Its
also available still if we want to refactor the script into an improved balancer?
                
> Script to add regions gradually to a new regionserver.
> ------------------------------------------------------
>
>                 Key: HBASE-3866
>                 URL: https://issues.apache.org/jira/browse/HBASE-3866
>             Project: HBase
>          Issue Type: Improvement
>          Components: scripts
>    Affects Versions: 0.90.2
>            Reporter: Aravind Gottipati
>            Priority: Minor
>         Attachments: 3866-max-regions-per-iteration.patch, slow_balancer.rb, slow_balancer.rb
>
>
> When a new region server is brought online, the current balancer kicks off a whole bunch
of region moves and causes a lot of regions to be un-available right away.  A slower balancer
that gradually balances the cluster is probably a good script to have.  I have an initial
version that mooches off the region_mover script to do this.

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