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From "Liang Xie (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8063) Filter HFiles based on first/last key
Date Tue, 12 Mar 2013 01:55:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13599589#comment-13599589
] 

Liang Xie commented on HBASE-8063:
----------------------------------

[~ted_yu], if you change ">" to ">=", then you have to write some codes to handle/verify
"get" case, which startRow == stopRow, making this function redundant. i thought the original
is just fine.
                
> Filter HFiles based on first/last key
> -------------------------------------
>
>                 Key: HBASE-8063
>                 URL: https://issues.apache.org/jira/browse/HBASE-8063
>             Project: HBase
>          Issue Type: Improvement
>          Components: Scanners
>    Affects Versions: 0.98.0
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>         Attachments: HBASE-8063.txt
>
>
> # hbase-5010 introduced a filter mechanism based on timerange hint
> # this jira is a placeholder just for keyrange hint: currently, low layer(hfile reader)
has first/last key getter methods already. we should utilize this information to pre-filte
hfiles while choosing scanners from storefiles.
> It's just a raw thought right now, no patch available yet. I'll summit a patch asap if
it's reasonable, welcome to give some suggestions/comments:)

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