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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-14110) Add CostFunction for balancing primary region replicas
Date Fri, 17 Jul 2015 16:59:04 GMT

     [ https://issues.apache.org/jira/browse/HBASE-14110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-14110:
---------------------------
      Resolution: Fixed
    Hadoop Flags: Reviewed
          Status: Resolved  (was: Patch Available)

Thanks for the review, Enis.

> Add CostFunction for balancing primary region replicas
> ------------------------------------------------------
>
>                 Key: HBASE-14110
>                 URL: https://issues.apache.org/jira/browse/HBASE-14110
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 2.0.0, 1.2.0, 1.3.0
>
>         Attachments: 14110-v1.txt
>
>
> Currently replicas for the same region are spread across region servers.
> However, one region server may serve disproportionately high number of primary region
replicas. This has been observed in production cluster.
> This issue adds PrimaryRegionCountSkewCostFunction which facilitates balancing primary
region replicas evenly across region servers.
> Thanks to Enis for fruitful discussion.



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