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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7716) Row Groups / Row Family / Entity Groups in HBase
Date Wed, 30 Jan 2013 02:41:14 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Enis Soztutar updated HBASE-7716:
---------------------------------

    Attachment: Entity Groups in HBase.txt

I've collected some of my thoughts here. Would love to hear feedback, discuss feasibility,
etc.  
                
> Row Groups / Row Family / Entity Groups in HBase
> ------------------------------------------------
>
>                 Key: HBASE-7716
>                 URL: https://issues.apache.org/jira/browse/HBASE-7716
>             Project: HBase
>          Issue Type: New Feature
>          Components: Client, regionserver
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 0.98.0
>
>         Attachments: Entity Groups in HBase.txt
>
>
> This issue is to discuss the possible addition to the HBase data model for "Row Groups".
> As we are nearing 1.0, discussing this for 0.98 seems the right time, especially given
that we have custom region split policies, local transactions, and API overhaul around data
types -> bytes. 
> Row Groups are semantic groupings of rows in the Hbase data model. All rows within a
given row group share the same row group key. 
> Row groups are similar to column families in HBase or locality groups in BigTable, but
transposed to rows instead of columns. All the rows within a row group physically belong together,
and served by a single region. This means that region boundaries cannot split the row group.

> Row groups are not predefined, and are dynamic. There can be one row group per row. 
> Row keys are fully optional, and backwards compatible. 

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