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https://issues.apache.org/jira/browse/HBASE-8188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lars Hofhansl updated HBASE-8188:
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Attachment: 8188-0.94.txt
0.94 patch.
I measure between 3-5% performance increase in my scenarios.
> 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
> Attachments: 8188-0.94.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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