> But that's absolutely weird. The mixing function should take care of that.
> But that's absolutely weird. The mixing function should take care of that.
Sure, unless you don't have any... This is what's currently in Mahout
(look closely at the first line!):
public static int hash(int value) {
return value;
//return value * 0x278DDE6D; // see
org.apache.mahout.math.jet.random.engine.DRand
/*
value &= 0x7FFFFFFF; // make it >=0
int hashCode = 0;
do hashCode = 31*hashCode + value%10;
while ((value /= 10) > 0);
return 28629151*hashCode; // spread even further; h*31^5
*/
}
So there is no redistributing of keys. In my opinion this is a bug
that should be addressed.
Dawid
