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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-7857) Sub-region management
Date Fri, 15 Feb 2013 17:19:12 GMT
Ted Yu created HBASE-7857:
-----------------------------

             Summary: Sub-region management
                 Key: HBASE-7857
                 URL: https://issues.apache.org/jira/browse/HBASE-7857
             Project: HBase
          Issue Type: Bug
            Reporter: Ted Yu


Sub-region provides a light weight management below region level.
Matt Corgan has a nice summary of the relationship between region size and number of regions
on region server:
https://issues.apache.org/jira/browse/HBASE-7667?focusedCommentId=13575024&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13575024

HBASE-7667 proposed stripe compaction. However, to fully achieve fine-grained management,
more components should participate:
* memstore flush should ideally have knowledge about what makes stripe compaction work efficiently
* we need to figure out where to store sub-region boundary information so that components
have easy access

Since HBASE-7667 focuses on compaction aspect, this JIRA discusses sub-region management in
other components.

User may want to see how sub-regions are shaped on web UI.

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