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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7323) add Cell interface to SeekerState and BufferedEncodedSeeker
Date Mon, 22 Apr 2013 04:55:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637772#comment-13637772
] 

ramkrishna.s.vasudevan commented on HBASE-7323:
-----------------------------------------------

@Matt
curentBuffer() has only value in it or it again the entire buffer array and we extract the
value from that?
                
> add Cell interface to SeekerState and BufferedEncodedSeeker
> -----------------------------------------------------------
>
>                 Key: HBASE-7323
>                 URL: https://issues.apache.org/jira/browse/HBASE-7323
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Compaction, Performance, regionserver, Scanners
>    Affects Versions: 0.95.2
>            Reporter: Matt Corgan
>         Attachments: HBASE-7323-SeekerState-Cell-v1.patch
>
>
> SeekerState is the staging site for a Cell while it is being assembled by the BufferedEncodedSeeker.
 When the parent StoreFileScanner calls getCurrentCell() it's guaranteed that the Cell is
fully assembled, and we can directly return the SeekerState as a Cell rather than copying
it into a KeyValue.  A benchmark at the StoreFileScanner level show ~50% faster cells/sec
than when copying to KeyValues (ignoring garbage collection).

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