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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2844) Capping the number of regions
Date Mon, 09 Aug 2010 17:20:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12896628#action_12896628
] 

stack commented on HBASE-2844:
------------------------------

Do you think this parameter makes sense on a per-table basis Andrew?  The whole idea is to
limit regions across the cluster letting them grow rather than split once we hit the limit.

> Capping the number of regions
> -----------------------------
>
>                 Key: HBASE-2844
>                 URL: https://issues.apache.org/jira/browse/HBASE-2844
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Pranav Khaitan
>            Assignee: Pranav Khaitan
>            Priority: Minor
>             Fix For: 0.90.0
>
>         Attachments: RegionCappingV2.patch
>
>
> It may sometimes be advantageous to prevent the number of regions from growing very large.
This may happen if the values are large in size even though the number of keyvalues are not
large. If the number of regions becomes too large, then it is difficult to accommodate the
memstore for each region in memory. In such cases, we either have to flush out memstore to
disk or decrease size of each memstore.

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