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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-8418) Caching KeyValue.getRowLength() to improve scan performance
Date Thu, 25 Apr 2013 11:02:16 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matteo Bertozzi resolved HBASE-8418.
------------------------------------

    Resolution: Invalid

closing down, after longer tests this doesn't seems to give the expected results.
                
> Caching KeyValue.getRowLength() to improve scan performance
> -----------------------------------------------------------
>
>                 Key: HBASE-8418
>                 URL: https://issues.apache.org/jira/browse/HBASE-8418
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Minor
>         Attachments: HBASE-8418-0.94-v0.patch
>
>
> Looking at the profile seems that Bytes.toShort() is called a lot.
> the calls are in ScanQueryMatcher.match() and KeyValue.KeyComparator.compare()
> getKeyLength() is already cached, but getRowLength() is not.

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