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Posted to dev@accumulo.apache.org by "Keith Turner (Updated) (JIRA)" <ji...@apache.org> on 2012/03/08 19:41:57 UTC

[jira] [Updated] (ACCUMULO-452) Generalize locality groups

     [ https://issues.apache.org/jira/browse/ACCUMULO-452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Keith Turner updated ACCUMULO-452:
----------------------------------

    Attachment: PartitionerDesign.txt

A stab at a deign for this possible feature.
                
> Generalize locality groups
> --------------------------
>
>                 Key: ACCUMULO-452
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-452
>             Project: Accumulo
>          Issue Type: New Feature
>            Reporter: Keith Turner
>             Fix For: 1.5.0
>
>         Attachments: PartitionerDesign.txt
>
>
> Locality groups are a neat feature, but there is no reason to limit partitioning to column families.  Data could be partitioned based on any criteria.  For example if a user is interested in querying recent data and ageing off old data partitioning locality groups based in timestamp would be useful.  This could be accomplished by letting users specify a partitioner plugin that is used at compaction and scan time.  Scans would need an ability to pass options to the partitioner.

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