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From "Zhihong Yu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5101) Add a max number of regions per regionserver limit
Date Thu, 29 Dec 2011 02:23:30 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13176951#comment-13176951
] 

Zhihong Yu commented on HBASE-5101:
-----------------------------------

@Jon:
Can you describe how the cluster got into this state ?
I guess a lot of region servers crashed ?
Otherwise there should have been better planning for the HFile size limit.
                
> Add a max number of regions per regionserver limit
> --------------------------------------------------
>
>                 Key: HBASE-5101
>                 URL: https://issues.apache.org/jira/browse/HBASE-5101
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 0.92.0
>            Reporter: Jonathan Hsieh
>
> In a testing environment, a cluster got to a state with more than 1500 regions per region
server, and essentially became stuck and unavailable.  We could add a limit to the number
of regions that a region server can serve to prevent this from happening.  This looks like
it could be implemented in the core or as a coprocessor.

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