import org.apache.hadoop.hbase.filter.CompareFilter
import org.apache.hadoop.hbase.filter.SingleColumnValueFilter
import org.apache.hadoop.hbase.util.Bytes
scan 'ld_login_2',{STARTROW=>'1395590400',LIMIT=>1,FILTER=>SingleColumnValueFilter.new(Bytes.toBytes('cf'),Bytes.toBytes('uid'),CompareFilter::CompareOp.valueOf('EQUAL'),Bytes.toBytes('48159865'))}

http://stackoverflow.com/questions/12634321/doing-a-valuefilter-or-a-columnfilter-on-hbase-shell