So I dig at cassandra github, found this this class , it seem that, cassandra 2.0 generate the token for the primary key using this method hash3_x64_128. Below are the method to get it work.. just put this into any java class and see the token generated.
public static LongToken genToken(String rowKey) {
ByteBuffer key = ByteBufferUtil.bytes(rowKey);
long hash = MurmurHash.hash3_x64_128(key, key.position(), key.remaining(), 0)[0];
LongToken lk = new LongToken(normalize(hash));
return lk;
}
public static void main(String[] args) {
System.out.println(genToken("jim"));
}
private static long normalize(long v)
{
// We exclude the MINIMUM value; see getToken()
return v == Long.MIN_VALUE ? Long.MAX_VALUE : v;
}
with jim, it generated as 2680261686609811218. So that should be correct. Something extra, if you use nodetool to show the token ranges, e.g.
nodetool -h localhost describering jw_schema1, you should get an idea with the token generated, the range on which nodes are responsible that hold the row data.
