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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4991) Provide capability to delete named region
Date Thu, 16 Feb 2012 19:46:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13209661#comment-13209661
] 

Todd Lipcon commented on HBASE-4991:
------------------------------------

Maybe I'm misunderstanding the use case, but I'm slightly skeptical that there isn't a simpler
way of solving the same thing.

It seems like this conflates two operations: 1) delete a bunch of data within a range, and
2) merge a region back with its neighbors. #2 is a more general "merge small regions" operation,
which I think should be attacked orthogonally to the issue of #1 (bulk range delete).
My other concern is that the API here exposes the concept of regions. A better API would be
deleteRange(startKey, endKey). It might be implemented underneath by splitting the table such
that startKey is the first key in some region, and endKey is the last key in another, and
then deleting the underlying regions. See http://incubator.apache.org/accumulo/user_manual_1.4-incubating/Table_Configuration.html#Delete_Range
for example

                
> Provide capability to delete named region
> -----------------------------------------
>
>                 Key: HBASE-4991
>                 URL: https://issues.apache.org/jira/browse/HBASE-4991
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Mubarak Seyed
>             Fix For: 0.94.0
>
>         Attachments: HBASE-4991.trunk.v1.patch, HBASE-4991.trunk.v2.patch
>
>
> See discussion titled 'Able to control routing to Solr shards or not' on lily-discuss
> User may want to quickly dispose of out of date records by deleting specific regions.


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