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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4786) [book] adding and reorganizing schema design information
Date Tue, 15 Nov 2011 05:15:51 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13150240#comment-13150240
] 

Hudson commented on HBASE-4786:
-------------------------------

Integrated in HBase-TRUNK #2439 (See [https://builds.apache.org/job/HBase-TRUNK/2439/])
    HBASE-4786 book.xml,performance.xml adding and reorg of schema info

dmeil : 
Files : 
* /hbase/trunk/src/docbkx/book.xml
* /hbase/trunk/src/docbkx/performance.xml

                
> [book] adding and reorganizing schema design information
> --------------------------------------------------------
>
>                 Key: HBASE-4786
>                 URL: https://issues.apache.org/jira/browse/HBASE-4786
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Doug Meil
>            Assignee: Doug Meil
>            Priority: Minor
>         Attachments: docbkx_HBASE_4786.patch
>
>
> Adding more schema design information.  Consolidated the "performance" related schema
options in the performance chapter so there wouldn't be explanations of these concepts in
both the Schema Design chapter and also the Performance chapter.
> book.xml
> * schema design chapter: moved the in-memory CF option, and bloom filter to the Peformance
chapter's schema design section.  
> * added link to performance chapter schema design section in Schema Design chapter.
> * added comment that online schema changes will be available in .92 (for an example where
it shows a table being disabled for a CF change)
> performance.xml
> * added the in-memory CF option and bloom filter reference from book.xml (see above)
> * added sub-section on per-table regionsize configuration.
> * added subsection on blocksize configuration.
> * clarified entry on regionsizes and made it clear that large 20gb regions are only for
HFile v2 format, whereas the largest HFile v1 format region is somewhere around 4gb.

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