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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8710) The balancer shouldn't try balancing one node
Date Wed, 02 Oct 2013 17:12:42 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans updated HBASE-8710:
--------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.98.0
     Release Note: The balancer will not try balancing the regions when there's only one node.
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

Committed to branch and trunk. Thanks for the patches James and for the reviews Elliott!

> The balancer shouldn't try balancing one node
> ---------------------------------------------
>
>                 Key: HBASE-8710
>                 URL: https://issues.apache.org/jira/browse/HBASE-8710
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.95.1
>            Reporter: Jean-Daniel Cryans
>            Assignee: James Kinley
>            Priority: Minor
>             Fix For: 0.98.0, 0.96.0
>
>         Attachments: HBASE-8710-1.patch, HBASE-8710-2.patch, HBASE-8710-3.patch
>
>
> In my logs, testing 0.95.1 RC1, I see:
> {noformat}
> 2013-06-07 17:31:47,377 DEBUG [ip-10-20-46-44.novalocal,48569,1370640098134-BalancerChore]
balancer.StochasticLoadBalancer: Could not find a better load balance plan.  Tried 3200 different
configurations in 27ms, and did not find anything with a computed cost less than 25.0
> {noformat}
> Ideally we'd not even try one configuration, let alone 3.2k.



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