How to generate Cassandra Token for composite partition key?

Question

My Cassandra ColumnFamily uses the Murmur3Partitioner, and has a composite partition key. With this partitioner I was trying to create a Token, however it seems this token factory only allows Long values. Is it possible to generate these hashes for something like "token(partition_column1, partition_column2)"?

Answer 1

It's supposed to work. In fact, if your partition key is composite, you should be unable to create a token for only a single column. Are you sure that you've defined the composite key properly?

cqlsh:testks> create table t1(k1 int, k2 text, v text, primary key((k1, k2)));
cqlsh:testks> insert into t1(k1, k2, v) values (1, 'key', 'value');
cqlsh:testks> select * from t1;

 k1 | k2  | v
----+-----+-------
  1 | key | value

(1 rows)

cqlsh:testks> select token(k1) from t1;
Bad Request: Invalid number of arguments in call to function token: 2 required but 1 provided
cqlsh:testks> select token(k2) from t1;
Bad Request: Invalid number of arguments in call to function token: 2 required but 1 provided
cqlsh:testks> select token(k1, k2) from t1;

 token(k1, k2)
---------------------
 8064425790465501062

    (1 rows)