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Date: Fri, 13 Sep 2013 10:23:53 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12667004.1378338149616.128458.1379067833426@arcas>
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References: <JIRA.12667004.1378338149616@arcas>
Subject: [jira] [Commented] (HBASE-9440) Pass blocks of KVs from HFile
 scanner to the StoreFileScanner and up
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    [ https://issues.apache.org/jira/browse/HBASE-9440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13766385#comment-13766385 ] 

stack commented on HBASE-9440:
------------------------------

And scan from the RS frontdoor of same file takes?
                
> Pass blocks of KVs from HFile scanner to the StoreFileScanner and up
> --------------------------------------------------------------------
>
>                 Key: HBASE-9440
>                 URL: https://issues.apache.org/jira/browse/HBASE-9440
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>
> Currently we read KVs from an HFileScanner one-by-one and pass them up the scanner/heap tree. Many time the ranges of KVs retrieved from StoreFileScanner (by StoreScanners) and HFileScanner (by StoreFileScanner) will be non-overlapping. If chunks of KVs do not overlap we can sort entire chunks just by comparing the start/end key of the chunk. Only if chunks are overlapping do we need to sort KV by KV as we do now.
> I have no patch, but I wanted to float this idea. 

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