private static int compareTimestampBytes(ByteBuffer o1, ByteBuffer o2)
{
int o1Pos = o1.position();
int o2Pos = o2.position();
int d = (o1.get(o1Pos+6) & 0xF) - (o2.get(o2Pos+6) & 0xF);
if (d != 0) return d;
d = (o1.get(o1Pos+7) & 0xFF) - (o2.get(o2Pos+7) & 0xFF);
if (d != 0) return d;
d = (o1.get(o1Pos+4) & 0xFF) - (o2.get(o2Pos+4) & 0xFF);
if (d != 0) return d;
d = (o1.get(o1Pos+5) & 0xFF) - (o2.get(o2Pos+5) & 0xFF);
if (d != 0) return d;
d = (o1.get(o1Pos) & 0xFF) - (o2.get(o2Pos) & 0xFF);
if (d != 0) return d;
d = (o1.get(o1Pos+1) & 0xFF) - (o2.get(o2Pos+1) & 0xFF);
if (d != 0) return d;
d = (o1.get(o1Pos+2) & 0xFF) - (o2.get(o2Pos+2) & 0xFF);
if (d != 0) return d;
return (o1.get(o1Pos+3) & 0xFF) - (o2.get(o2Pos+3) & 0xFF);
}
Looks like it's only comparing the timestamp bytes.
On Mon, Jun 6, 2011 at 4:06 PM, Patrick Julien <pjul...@gmail.com> wrote:
> How does this work exactly? If you're using generation 1 time uuids
> for your keys to get ordering, doesn't this mean the keys need to be
> generated all on the same host when you either query or insert? Or
> does cassandra only inspect the bits that represent the time stamp of
> the UUID when performing a lookup?
>
--
---------------------------------------------
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
