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From "Pranav Khaitan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2904) Smart seeking using filters
Date Sat, 14 Aug 2010 08:00:16 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2904?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Pranav Khaitan updated HBASE-2904:

    Attachment: ReseekV10.patch

Patch for HBASE-1517, HBASE-2903, HBASE-2904

> Smart seeking using filters
> ---------------------------
>                 Key: HBASE-2904
>                 URL: https://issues.apache.org/jira/browse/HBASE-2904
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Pranav Khaitan
>            Assignee: Pranav Khaitan
>         Attachments: ReseekV10.patch
> Add the ability for filters to be able to communicate to scanners through ScanQueryMatcher.
In addition to passing headers, filters should also be able to pass Keys to the Scanner so
that the Scanner can directly seek to the appropriate position. This would give a significant
gain in read performance. Currently, every key of the required rows is being read even though
the required keys may be much lesser.
> Since filters can be customized depending on use cases, they are inexpensive and flexible
to use.

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