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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12139) StochasticLoadBalancer doesn't work on large lightly loaded clusters
Date Wed, 01 Oct 2014 21:46:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14155610#comment-14155610
] 

Hudson commented on HBASE-12139:
--------------------------------

FAILURE: Integrated in HBase-1.0 #256 (See [https://builds.apache.org/job/HBase-1.0/256/])
HBASE-12139 StochasticLoadBalancer doesn't work on large lightly loaded clusters (eclark:
rev 4efb03e6f561d4c936ee27163e6ca1569efd7d5c)
* hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancer.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java
* .arcconfig
* hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/BalancerTestBase.java


> StochasticLoadBalancer doesn't work on large lightly loaded clusters
> --------------------------------------------------------------------
>
>                 Key: HBASE-12139
>                 URL: https://issues.apache.org/jira/browse/HBASE-12139
>             Project: HBase
>          Issue Type: Bug
>          Components: Balancer, master
>    Affects Versions: 0.99.0, 2.0.0, 0.98.6.1
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>            Priority: Critical
>             Fix For: 2.0.0, 0.98.7, 0.99.1
>
>         Attachments: 0001-HBASE-12139-StochasticLoadBalancer-doesn-t-work-on-l-0.98.patch,
0001-HBASE-12139-StochasticLoadBalancer-doesn-t-work-on-l.patch
>
>
> If you have a cluster with > 200 nodes and a small table (< 50 regions) the StochasticLoadBalancer
doesn't work at all. It is not correctly scaling the required values.  



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