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https://issues.apache.org/jira/browse/ACCUMULO-452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13225481#comment-13225481
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Billie Rinaldi commented on ACCUMULO-452:
-----------------------------------------

I agree entirely that it would be better if timestamps were used solely for 
versioning.  However, because the API allows users to set timestamps manually, 
they often do; and they expect them to be used like timestamps.  If only this 
part of the key had been named "version" instead.
                
> 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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