On Wed, Mar 17, 2010 at 12:10 PM, Brandon Williams <dri...@gmail.com> wrote: > On Wed, Mar 17, 2010 at 11:05 AM, Richard Grossman <richie...@gmail.com> > wrote: >> >> Thanks, But what do you mean by ? >> >>> pack a random integer after the score (so the sort order is maintained) >>> in big endian format and only examine the first 8 bytes of the column upon >>> retrieval. >>> -Brandon >> >> Do I need to take the score and add like -number like 100-1, 100-2, 100-3 >> etc... to prevent collision ? >> Thanks > > You have the score, which you pack in big endian format, resulting in 8 > bytes. Then you generate a complete random number and pack it in big endian > format as well, resulting in another 8 bytes. Now you concatenate the two > together (with the score first, to maintain sort order) and insert the > column. When you retrieve it, you only look at the first 8 bytes to get the > score since the random number isn't important. > -Brandon
Couldn't you just use a supercolumn whose keys were the score and the subcolumns were username:true? Basically using the subcolumns as a list? -- Toby DiPasquale
