presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/CassandraSessionProperties.java/CassandraSessionProperties/CassandraSessionProperties
class CassandraSessionProperties:    @Inject
    public CassandraSessionProperties(CassandraClientConfig cassandraClientConfig)
    {
        sessionProperties = ImmutableList.of(
                longProperty(
                        SPLITS_PER_NODE,
                        "Number of splits per node. By default, the values from the system.size_estimates table are used. Only override when connecting to Cassandra versions < 2.1.5.",
                        cassandraClientConfig.getSplitsPerNode().orElse(null),
                        false));
    }