How to generate murmur3 in cassandra2.0

Reading into this doc, got really curious on how the murmur3 hash value is generated.

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.