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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4256) Intra-row scanning (part deux)
Date Fri, 26 Aug 2011 17:47:29 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13091899#comment-13091899
] 

stack commented on HBASE-4256:
------------------------------

@J-D On cf, I'd say might as well though I see x-cf not so important.  Should be able to spec
a timerange though. I see that we can pass one now but we'd need to jigger it so it applied
over the qualifier range or if only the one qualifier specified, w/i that qualifier; e.g.
imagine a metric w/ 1M versions... you should be able to spec scanning 10k at at aim.  

> Intra-row scanning (part deux)
> ------------------------------
>
>                 Key: HBASE-4256
>                 URL: https://issues.apache.org/jira/browse/HBASE-4256
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 0.90.4
>            Reporter: Jean-Daniel Cryans
>            Priority: Critical
>             Fix For: 0.94.0
>
>
> Dave Revell was asking on IRC today if there's a way to scan ranges of *qualifiers* within
a row. That is, to be able to specify a *start qualifier* and an *end qualifier* so that the
Get or Scan seeks directly to the first qualifier and stops at some point which can be predeterminate
by a qualifier or simply a batch configuration (already exists).
> This is particularly useful for large rows with time-based qualifiers.
> Dave also mentioned that another popular database has such a feature that they call "column
slices".

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