Thanks Harsh..little confused ..want to clarify some more.... the row key i have is a combination of A+B+C+D so while retrieving the value the start key will be a combination of just A+B.Is that possible?
Harsh J wrote: > > Hello, > > Yes, look at Scan and Get APIs, both of which allow you to add Columns > (Family and Qualifier both) to them. > > Scan: > http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Scan.html > Get: > http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Get.html > > For instance, on the HBase shell, you can do this as: > > hbase(main):002:0> create 'test', 'a', 'b', 'c', 'd' > hbase(main):003:0> put 'test', 'r1', 'a:x', 'x' > hbase(main):004:0> put 'test', 'r1', 'b:x', 'x' > hbase(main):005:0> put 'test', 'r1', 'c:x', 'x' > hbase(main):006:0> put 'test', 'r1', 'd:x', 'x' > hbase(main):007:0> put 'test', 'r2', 'd:y', 'y' > hbase(main):008:0> put 'test', 'r2', 'c:y', 'y' > hbase(main):009:0> put 'test', 'r2', 'b:y', 'y' > hbase(main):010:0> put 'test', 'r2', 'a:y', 'y' > > hbase(main):011:0> scan 'test', {COLUMNS => ['a', 'c']} > ROW COLUMN+CELL > r1 column=a:x, timestamp=1331358809297, value=x > r1 column=c:x, timestamp=1331358815490, value=x > r2 column=a:y, timestamp=1331358841888, value=y > r2 column=c:y, timestamp=1331358836407, value=y > > hbase(main):012:0> get 'test', 'r1', {COLUMNS => ['a', 'c']} > COLUMN CELL > a:x timestamp=1331358809297, value=x > c:x timestamp=1331358815490, value=x > > Do: help 'dml' for more docs from the HBase shell. > > On Sat, Mar 10, 2012 at 4:29 AM, newbie24 <[email protected]> wrote: >> >> Hi, >> >> Can someone please answer this question . >> >> I have a column family say A,B,C D >> can I use just a partial of the column family to retrieve the data.Using >> the >> above example can my startrow combine values of column A abd B to >> retrieve >> a row from hbase. >> >> >> Not sure If I'm clear with my question. >> >> Thanks >> >> -- >> View this message in context: >> http://old.nabble.com/question-in-retrieving-data-from-hbase-tp33475136p33475136.html >> Sent from the HBase User mailing list archive at Nabble.com. >> > > > > -- > Harsh J > > -- View this message in context: http://old.nabble.com/question-in-retrieving-data-from-hbase-tp33475136p33476028.html Sent from the HBase User mailing list archive at Nabble.com.
