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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15515) Improve LocalityBasedCandidateGenerator in Balancer
Date Thu, 24 Mar 2016 18:10:25 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15515?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-15515:
---------------------------
     Hadoop Flags: Reviewed
    Fix Version/s: 1.4.0
                   1.3.0

> Improve LocalityBasedCandidateGenerator in Balancer
> ---------------------------------------------------
>
>                 Key: HBASE-15515
>                 URL: https://issues.apache.org/jira/browse/HBASE-15515
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 1.3.0
>            Reporter: Guanghao Zhang
>            Assignee: Guanghao Zhang
>            Priority: Minor
>             Fix For: 2.0.0, 1.3.0, 1.4.0
>
>         Attachments: HBASE-15515-v1.patch, HBASE-15515.patch
>
>
> There are some problems which need to fix.
> 1. LocalityBasedCandidateGenerator.getLowestLocalityRegionOnServer should skip empty
region.
> 2. When use LocalityBasedCandidateGenerator to generate Cluster.Action, it should add
random operation instead of pickLowestLocalityServer(cluster). Because the search function
may stuck here if it always generate the same Cluster.Action.
> 3. getLeastLoadedTopServerForRegion should get least loaded server which have better
locality than current server.



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