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https://issues.apache.org/jira/browse/HBASE-3866?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aravind Gottipati updated HBASE-3866:
-------------------------------------
Attachment: slow_balancer.rb
This script uses a lot of the code from region_mover.rb. The script should be
invoked like this.
HBASE_NOEXEC=true $HBASE_HOME/bin/hbase org.jruby.Main
$HBASE_HOME/bin/slow_balancer.rb --debug -l 2
The -l option is the target difference between the server with the maximum
regions and the server with the minimum regions. Once the delta reaches this
point, the script exits. If -l is not passed, it defaults to the number of
region servers in your environment.
> 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: 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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