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From "Pranav Khaitan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2903) ColumnPrefix filtering
Date Mon, 09 Aug 2010 00:00:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12896428#action_12896428

Pranav Khaitan commented on HBASE-2903:

Yah, I talked about this in the patch posted on reviewboard. This particular filter is only
for prefix matching. However, I also wrote the code for reseeking to work when Scan has been
configured to return only certain columns. However, the question there is that are we fine
with adding this reseeking feature to the main read path.

> ColumnPrefix filtering
> ----------------------
>                 Key: HBASE-2903
>                 URL: https://issues.apache.org/jira/browse/HBASE-2903
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Pranav Khaitan
>            Assignee: Pranav Khaitan
> A filter which takes as input a prefix and selects keys with columns containing that
prefix. Should be able to support advanced seeking. That is if, the scanner is at beginning
of the file, it should directly go to the point where the set of columns may start. Similarly,
it should exit out of a row as soon as it is done with the required set of columns.

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