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From Jean-Daniel Cryans <jdcry...@apache.org>
Subject Re: Filter Rows on last 4 bytes
Date Fri, 29 Jul 2011 18:15:12 GMT
You need to write your own comparator (sorry if I didn't say it
plainly like that the first time).

J-D

On Fri, Jul 29, 2011 at 12:15 AM, Shuja Rehman <shujamughal@gmail.com> wrote:
> Yes, I have look that  But I did not find any comparator which takes
> starting index and length to match. I was thinking to have such type of
> comparator.
>
> Filter rf = new RowFilter(CompareOp.EQUAL, new
> BinaryComparator(Bytes.toBytes(ID), StartingIndex, Length);
>
> And, about restriction, yes first four bytes will give me a subset which
> further needs to filter on the basis of next 4 bytes.
>
>
> On Wed, Jul 27, 2011 at 11:45 PM, Jean-Daniel Cryans <jdcryans@apache.org>wrote:
>
>> You will need to use a RowFilter with a Comparator that only looks at
>> the last 4 bytes,
>>
>> http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/filter/RowFilter.html
>>
>> FYI unless you are restricting your scans on a few rows, doing this on
>> a whole table won't scale as it will do a full table scan.
>>
>> J-D
>>
>> On Wed, Jul 27, 2011 at 7:34 AM, Shuja Rehman <shujamughal@gmail.com>
>> wrote:
>> > Hi,
>> >
>> > I have the key consist of two integers (4+4=8 Bytes). and i want to
>> filter
>> > the rows on the basis of second integer which means need to compare last
>> 4
>> > bytes of key. If last 4 bytes matched with input integer then row should
>> > include in the return results. Can you ppl let me know how to do this
>> with
>> > java API.
>> >
>> > Thanks
>> >
>> > --
>> > Regards
>> > Shuja-ur-Rehman Baig
>> > <http://pk.linkedin.com/in/shujamughal>
>> >
>>
>
>
>
> --
> Regards
> Shuja-ur-Rehman Baig
> <http://pk.linkedin.com/in/shujamughal>
>

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