AFAIK Token suport is there for the hadoop integration and is not something you should normally need to use.
It will be easier to use a KeyRange with a start_key if you have a consistent key format, with the most significant discriminator first. e.g. <category>/id Then you can use a range start such as foo/ If you are using the RandomParitioner don't forget http://wiki.apache.org/cassandra/FAQ#range_rp Hope that helps. Aaron ----------------- Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com On 6 May 2011, at 22:34, cbert...@libero.it wrote: > Hi all, > I have a column family with about 300 rows. Rows name are of 2 categories: > > number (eg: 12345) > e_number (eg: e_12345) > > is there any way to extract only rows that are numbers? > For the moment I'm iterating over all rows with a KeyRange and filtering > client-side but I don't like this solution. > I've seen that KeyRange can be created using tokens instead of keys but I > don't understand how they works and did not find any working example. > > (Java/Pelops/Cassandra 0.7.5) > > TIA > > Carlo
