-Re: Using doubles and longs as ordering row values
anil gupta 2012-11-05, 22:57
If possible try to avoid using Double for rowkey because Double has
Here is more details about problems with double:
You might get wrong results due problems in Double. You can use two long or
int to store the decimal value as RowKey.
On Mon, Nov 5, 2012 at 11:38 AM, Jean-Daniel Cryans <[EMAIL PROTECTED]>wrote:
> On Mon, Nov 5, 2012 at 10:41 AM, Jonathan Bishop <[EMAIL PROTECTED]>
> > Hi,
> > 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
> > the value of the doubles themselves.
> It's the same ordering as long as you don't use negative values.
> > 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?
> Don't use row keys that can be negative? :)
> Also don't use a single number as a row key, see
Thanks & Regards,