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From Stuti Awasthi <stutiawas...@hcl.com>
Subject RE: Scan not working properly on composite keys
Date Mon, 29 Aug 2011 15:49:03 GMT
Hi,

Sure, I tried also by prefixing with admin, and it was working fine. I was just wondering
that is there any way that we can get the information from Hbase using some part of Composite
keys or wild card characters ?

Thanks

-----Original Message-----
From: Buttler, David [mailto:buttler1@llnl.gov] 
Sent: Monday, August 29, 2011 8:46 PM
To: user@hbase.apache.org
Subject: RE: Scan not working properly on composite keys

The scan started at "viewer/user3" because that is the next key after "user2".  If your keys
have a prefix, like admin or viewer, then you need to prepend that to your start row as well.
 Hbase has no magic where it can intuit your intent.

Dave

-----Original Message-----
From: Stuti Awasthi [mailto:stutiawasthi@hcl.com]
Sent: Monday, August 29, 2011 12:39 AM
To: user@hbase.apache.org
Subject: Scan not working properly on composite keys

Hi Friends,

I have a query regarding scan operation on composite keys.

I have table as follows :

admin/user1                                       column=info:email, timestamp=1314594930540,
value=abc
admin/ user1                                    column=info:mobile, timestamp=1314594940686,
value=123456
admin/ user1                                    column=info:name, timestamp=1314594915091,
value=def
admin/user2                                     column=info:email, timestamp=1314597627865,
value=def
admin/ user2                                    column=info:mobile, timestamp=1314597636663,
value=67890
admin/ user2                                    column=info:name, timestamp=1314597614585,
value=pqr
viewer/user3                                     column=info:email, timestamp=1314601194373,
value=pqr
viewer/ user3                                    column=info:mobile, timestamp=1314601256479,
value=12345
viewer/ user3                                   column=info:name, timestamp=1314601207662,
value=xyz

I want to find all the records of "user2". For this I tried following query but it is giving
me all records of user3 :

hbase(main):005:0> scan 'users', {STARTROW=>'user2'}
ROW                                         COLUMN+CELL
viewer/user3                          column=info:email, timestamp=1314601194373, value=satyendrap@hcl.com
viewer/ user3                          column=info:mobile, timestamp=1314601256479, value=37498734893
viewer/ user3                          column=info:name, timestamp=1314601207662, value=satyendra
pandey
1 row(s) in 0.0330 seconds

I also tried various queries for this but not getting correct result. I am definitely missing
something. Please help

Thanks & Regards
Stuti Awasthi
Sr Specialist


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