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Posted to issues@hbase.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2011/03/17 21:56:29 UTC

[jira] Commented: (HBASE-3422) Balancer will willing try to rebalance thousands of regions in one go; needs an upper bound added.

    [ https://issues.apache.org/jira/browse/HBASE-3422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13008124#comment-13008124 ] 

Ted Yu commented on HBASE-3422:
-------------------------------

How about introducing hbase.balancer.maxregions.perround ?


> Balancer will willing try to rebalance thousands of regions in one go; needs an upper bound added.
> --------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-3422
>                 URL: https://issues.apache.org/jira/browse/HBASE-3422
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.90.0
>            Reporter: stack
>            Assignee: Ted Yu
>
> See HBASE-3420.  Therein, a wonky cluster had 5k regions on one server and < 1k on others.  Balancer ran and wanted to redistribute 3k+ all in one go.  Madness.
> If a load of rebalancing to be done, should be done somewhat piecemeal.  We need maximum regions to rebalance at a time upper bound at a minimum.

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