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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3609) Improve the selection of regions to balance; part 2
Date Tue, 08 Mar 2011 17:36:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004082#comment-13004082
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Ted Yu commented on HBASE-3609:
-------------------------------

hbase-3609-by-region-age.txt is the refined version.
This accounts for the out-of-band regions which were assigned to the server after some other
region server crashed.
In that scenario, random selection may not work very well because the regions on individual
region server are not sorted.
Both TestLoadBalancer and TestAdmin pass.

> Improve the selection of regions to balance; part 2
> ---------------------------------------------------
>
>                 Key: HBASE-3609
>                 URL: https://issues.apache.org/jira/browse/HBASE-3609
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: Ted Yu
>         Attachments: hbase-3609-by-region-age.txt, hbase-3609.txt
>
>
> See 'HBASE-3586  Improve the selection of regions to balance' for discussion of algorithms
that improve on current random assignment.

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