Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
HBase >> mail # user >> Using doubles and longs as ordering row values

Copy link to this message
Using doubles and longs as ordering row values

In my application my row values are doubles. I would like my scans to
traverse the rows in order of increasing values.

But if I simply use

double d  = ....
byte[] row = Bytes.toBytes(d);

I will get an ordering which is based on the byte values of doubles, not on
the value of the doubles themselves.

I see also that integer values have the same issue due to the first bit
being the sign bit. So negative values will come after positive values.

Any suggestions?


Jean-Daniel Cryans 2012-11-05, 19:38
anil gupta 2012-11-05, 22:57
lars hofhansl 2012-11-06, 00:01
Dave Latham 2012-11-06, 00:26
Dave Latham 2012-11-06, 00:27
Jonathan Bishop 2012-11-06, 05:07
David Koch 2012-12-01, 15:01
Marcos Ortiz 2012-12-01, 15:27