presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/CassandraSplit.java/CassandraSplit/getInfo
class CassandraSplit:    @Override
    public Object getInfo()
    {
        return ImmutableMap.builder()
                .put("hosts", addresses)
                .put("partitionId", partitionId)
                .build();
    }