Hi, Yun:
Take a look at HBASE-5416 (Improve performance of scans with some kind of
filters) which is in 0.94.5 release.
In your case, you can use a filter which specifies column C as the
essential family.
Here I interpret column C as column family.
Cheers
On Sat, Mar 9, 2013 at 11:11 AM, yun
Hi, Ted and Anoop, thanks for your notes.
I am talking about column rather than column family, since physically column
family should be able to perform efficiently (storage layer, CF's are stored
separately). But columns of the same column family may be mixed physically, and
that makes filters
bq. physically column family should be able to perform efficiently (storage
layer
When you scan a row, data for different column families would be brought
into memory (if you don't utilize HBASE-5416)
Take a look at:
As per the above said, you will need a full table scan on that CF.
As Ted said, consider having a look at your schema design.
-Anoop-
On Sun, Mar 10, 2013 at 8:10 PM, Ted Yu yuzhih...@gmail.com wrote:
bq. physically column family should be able to perform efficiently (storage
layer
When
Just curious, won't ROWCOL bloom filter works for this case?
Best Regards,
Raymond Liu
As per the above said, you will need a full table scan on that CF.
As Ted said, consider having a look at your schema design.
-Anoop-
On Sun, Mar 10, 2013 at 8:10 PM, Ted Yu yuzhih...@gmail.com
: Monday, March 11, 2013 7:43 AM
To: user@hbase.apache.org
Subject: RE: How HBase perform per-column scan?
Just curious, won't ROWCOL bloom filter works for this case?
Best Regards,
Raymond Liu
As per the above said, you will need a full table scan on that CF.
As Ted said, consider having a look
: How HBase perform per-column scan?
Just curious, won't ROWCOL bloom filter works for this case?
Best Regards,
Raymond Liu
As per the above said, you will need a full table scan on that CF.
As Ted said, consider having a look at your schema design.
-Anoop-
On Sun, Mar 10
