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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9503) minor optimization for getRowKeyAtOrBefore
Date Mon, 16 Sep 2013 18:18:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13768569#comment-13768569
] 

Sergey Shelukhin commented on HBASE-9503:
-----------------------------------------

Hmm, now that I think of it I am not even sure how this thing works with respect to deletes.
It would seem that you always need to check all files in case of out-of-order ts-es moreover,
when we look at individual scanners we are not processing deletes correctly. It might only
be working because it's used on meta, so there's no timestamp magic going on and the updates
are not that frequent. 
Wdyt?
                
> minor optimization for getRowKeyAtOrBefore
> ------------------------------------------
>
>                 Key: HBASE-9503
>                 URL: https://issues.apache.org/jira/browse/HBASE-9503
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.98.0, 0.95.2, 0.94.12, 0.96.1
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>         Attachments: HBASE-9503.txt, HBASE-9503-v2.txt
>
>
> we could shortcut the getRowKeyAtOrBefore() as quick as we found an exact matching. it'll
be reasonable if there're lots of target storefiles.
> It's a minor change, w/o a new test case be made:)

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