reducerbykey 的使用问题？

我定义了20个Long 类型的变量 ，如何定义才能用reducerbykey ，每个字段不能丢 后期要对 时间段，批次，和全部进行统计
我自己定义了一个但是报错

  JavaPairDStream<Long, Tuple19<Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long>> tatoalOrMmeReivers = transform.mapPartitionsToPair(m -> {
            List<Tuple2<Long,Tuple19<Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long>>> outList = new LinkedList<>();
            while (m.hasNext()) {
                String next = m.next();
                outList.add(new Tuple2<Long, Tuple19<Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long>>
                        (1L, new Tuple19<Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long>
                                (1L, 1L, 1L, 1L, 1L, 1L, 11L, 11L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L)));
            }
            return outList.iterator();
        });
        JavaDStream<String> allTime = tatoalOrMmeReivers
                .reduceByKey((r1, r2) -> r1 + r2)
                .repartition(1)
                .mapPartitions(m -> {
                    StringBuilder builder = new StringBuilder();
                    LinkedList<String> strings = new LinkedList<>();
                    while (m.hasNext()) {
                        Tuple2<Long, Tuple19<Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long, Long>> next = m.next();
                        builder.append("省份编码：")
                                .append(cityName)
                                .append("\t")
                                .append("数据时间区间：")
                                .append(next._1)
                                .append("\t")
                                .append("数量：")
                                .append(next._2)
                                .append("\t")
                                .append("有效数量：")
                                .append(next._2);
                        strings.add(builder.toString());
                        builder.setLength(0);
                    }
                    return strings.iterator();
                });

            报错位置
            ![file](http://hainiubl.com/uploads/images/202106/07/4428/fMP92fckAY.png)
            求大神解惑