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https://issues.apache.org/jira/browse/HBASE-8188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13621745#comment-13621745
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Lars Hofhansl commented on HBASE-8188:
--------------------------------------
Let me just commit the simple part here (which was +1'ed). And file another
ticket to simplify ScanQueryMatcher.
> 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
> 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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