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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8188) Avoid unnecessary row compare in StoreScanner
Date Thu, 04 Apr 2013 06:01:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13621837#comment-13621837
] 

Hudson commented on HBASE-8188:
-------------------------------

Integrated in HBase-TRUNK #4010 (See [https://builds.apache.org/job/HBase-TRUNK/4010/])
    HBASE-8188 Avoid unnecessary row compare in StoreScanner (Revision 1464287)

     Result = FAILURE
larsh : 
Files : 
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java

                
> Avoid unnecessary row compare in StoreScanner
> ---------------------------------------------
>
>                 Key: HBASE-8188
>                 URL: https://issues.apache.org/jira/browse/HBASE-8188
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.95.1, 0.98.0, 0.94.7
>
>         Attachments: 8188-0.94-experimental.txt, 8188-0.94.txt, 8188-0.96.txt, 8188-0.96.txt,
8188-0.96.txt, 8188-0.96.txt
>
>
> When scanner batching disable (which is the default) a row compare in StoreScanner avoided,
because only entire rows of data are requested.
> This provides a slight performance gain, especially for tall tables (and when all data
is in the cache)

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