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From Mike Axiak <m...@axiak.net>
Subject Re: Hbase full scan
Date Wed, 14 May 2014 15:20:26 GMT
Just to clarify - filters can only skip rows when the filter is
operating on the row keys, and even then only some filters can take
advantage of this. (Notably, FuzzyRowFilter and RegexFilter)

Best,
Mike

On Mon, May 12, 2014 at 11:17 PM, mu yu <win.acc@gmail.com> wrote:
> Hi JM,
> Thanks for your reply .
> Ok,that's mean when filter or start row and stop row are used ,the scan
> would skip the other rows.
> Thank you so much.
>
>
> On Tue, May 13, 2014 at 2:15 AM, Jean-Marc Spaggiari <
> jean-marc@spaggiari.org> wrote:
>
>> Hi Mu,
>>
>> For a scan you can give start row and stop row. If you do so, it's only a
>> partial scan. Also, if you add filters, rows are skipped on the server
>> side.
>>
>> So you need to think your key to match your access pattern to avoid huge
>> scans.
>>
>> JM
>>
>>
>> 2014-05-07 5:06 GMT-04:00 mu yu <win.acc@gmail.com>:
>>
>> > Hi
>> > We  deployed  a hbase-hadoop cluster for log storage .It's known hbase
>> has
>> > no index , i wanna know all the scan including the hbase filter scan are
>> > full table scan ,and there's no other scans ?
>> > For example if  implement a  rowkey  scan by rowkey filter , and  hbase
>> > would execute a full table scan .
>> >
>> > Any reply are appreciate.Thanks in advance.
>> >
>>

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