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From "Pranav Khaitan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2450) For single row reads of specific columns, seek to the first column in HFiles rather than start of row
Date Fri, 03 Sep 2010 20:14:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12906055#action_12906055
] 

Pranav Khaitan commented on HBASE-2450:
---------------------------------------

@Stack: The submitted patch will make this case much better. Using the reseek option, read
the start of a row to see if any row deletes are there. If there is no such delete, skip directly
to required columns rather than reading all (possibly hundreds of) columns sequentially.

> For single row reads of specific columns, seek to the first column in HFiles rather than
start of row
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-2450
>                 URL: https://issues.apache.org/jira/browse/HBASE-2450
>             Project: HBase
>          Issue Type: Improvement
>          Components: io, regionserver
>            Reporter: Jonathan Gray
>            Assignee: Pranav Khaitan
>             Fix For: 0.90.0
>
>
> Currently we will always seek to the start of a row.  If we are getting specific columns,
we should seek to the first column in that row.

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