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From Stack <st...@duboce.net>
Subject Re: Running prefix scans in hbase
Date Wed, 15 May 2013 08:35:30 GMT
On Tue, May 14, 2013 at 11:33 PM, Varun Sharma <varun@pinterest.com> wrote:

> Hi,
> I was looking at PrefixFilter but going by the implementation - it looks we
> scan every row until we hit the prefix instead of seeking to the row with
> the required prefix.
> I was wondering if there are more efficient alternatives which would do a
> real seek rather than scanning all rows. Would setting startRow and stopRow
> - effectively seek to startRow and then perform the scan ?

Scanner should start at the specified startrow, and then begin applying the
filter per row (if prefix filter, try a start row that is made of the
filter prefix).  If it is doing otherwise, it is broke.


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