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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12713) IncreasingToUpperBoundRegionSplitPolicy invalid when region count greater than 100
Date Thu, 18 Dec 2014 07:08:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14251317#comment-14251317
] 

Lars Hofhansl commented on HBASE-12713:
---------------------------------------

Hi [~mopishv0]. Thanks for reporting the issue. Can you tell us more? In what way is it "invalid"?
IncreasingToUpperBoundRegionSplitPolicy only counts regions on the region server it is running
on.

> IncreasingToUpperBoundRegionSplitPolicy invalid when region count greater than 100
> ----------------------------------------------------------------------------------
>
>                 Key: HBASE-12713
>                 URL: https://issues.apache.org/jira/browse/HBASE-12713
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 0.98.6
>            Reporter: Liu Junhong
>   Original Estimate: 4m
>  Remaining Estimate: 4m
>
> I find that the policy of region split which in IncreasingToUpperBoundRegionSplitPolicy
will be invalid when the count of region is greater than 100. But sometimes 100 regions is
not too much for a cluster that has 50 or more regionservers.
> So i think this policy should consider the density of the regions but not the total count
of the regions.



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