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From "rajeshbabu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6298) Region balancer not balancing
Date Sun, 01 Jul 2012 12:04:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404717#comment-13404717
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rajeshbabu commented on HBASE-6298:
-----------------------------------

Skipping load balancing because  "hbase.master.loadbalance.bytable" property set to true (true
by default) when we set it to true, balancer calls balance table wise(only table regions and
corresponding servers considered for balance). Some times even we start new region server
also no use in these scenarios. if you configure "hbase.master.loadbalance.bytable" to false
load will be balanced on all servers. 
Hope I am clear.
                
> Region balancer not balancing
> -----------------------------
>
>                 Key: HBASE-6298
>                 URL: https://issues.apache.org/jira/browse/HBASE-6298
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.94.0
>            Reporter: Dave Revell
>         Attachments: master_startup.log
>
>
> Despite regions being unbalanced, the load balancer takes no action. On my cluster the
least-loaded regionserver has 33 regions and the most-loaded regionserver has 44 regions.
My cluster has 1084 regions and 29 servers. It might be relevant that a 30th server used to
belong to the cluster but was removed.
> The master log has some strange entries when the balancer runs. The attached log file
was generated by restarting the master, then running "balancer" in the shell.

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