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From "Liang Xie (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8198) Backport HBASE-8063(Filter HFiles based on first/last key) into 0.94
Date Thu, 28 Mar 2013 04:11:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13616034#comment-13616034
] 

Liang Xie commented on HBASE-8198:
----------------------------------

bq.Ahh, the dreaded seekBefore.
Hi [~lhofhansl], is there any historical legend about seekBefore? :) I am working on an reverseScan
impletement in our internal version, which depends on seekBefore defenitely, hope i am not
falling into the abyss.
                
> Backport HBASE-8063(Filter HFiles based on first/last key) into 0.94
> --------------------------------------------------------------------
>
>                 Key: HBASE-8198
>                 URL: https://issues.apache.org/jira/browse/HBASE-8198
>             Project: HBase
>          Issue Type: Improvement
>          Components: Scanners
>    Affects Versions: 0.94.6
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>         Attachments: 8198-0.94-v2.txt, HBASE-8198.txt
>
>
> KeyRange hint.
> One thing need to note is: there'is a few new test statement added in the end of TestScannerSelectionUsingKeyRange
file, comparing with trunk code, it's schema metric related.(In deed, this is the original
patch, trunk code were removed due to schema metric compiling failed)
> I ran "mvn clean test -P localTests -Dtest=TestScannerSelectionUsingKeyRange" locally
and passed.

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