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Posted to dev@hbase.apache.org by "Guanghao Zhang (JIRA)" <ji...@apache.org> on 2016/03/22 04:06:25 UTC

[jira] [Created] (HBASE-15515) Improve LocalityBasedCandidateGenerator in Balancer

Guanghao Zhang created HBASE-15515:
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             Summary: 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


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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