Can't serialize message of type "pulsar.proto.MessageMetadata" because it is missing required fields: (cannot determine missing fields for lite message)

nodejs 16
sdk version：nodejs pulsar-client 1.6.2
cluster version 2.7

When I restart the producer, I get the following error：

2022-07-12 12:54:07.697 INFO [140305944786688] HTTPLookupService:295 | parsePartitionData = { LookupDataResult [brokerUrl_ = ] [brokerUrlTls_ = ] [partitions = 2] [authoritative = 0] [redirect = 0] proxyThroughServiceUrl = 0] }

[libprotobuf FATAL google/protobuf/message_lite.cc:327] CHECK failed: IsInitialized(): Can't serialize message of type "pulsar.proto.MessageMetadata" because it is missing required fields: (cannot determine missing fields for lite message)

terminate called after throwing an instance of 'google::protobuf::FatalException'

what(): CHECK failed: IsInitialized(): Can't serialize message of type "pulsar.proto.MessageMetadata" because it is missing required fields: (cannot determine missing fields for lite message)

Why is there such an error, is it a bug?

首先使用 Node.js 16、pulsar-client 1.6.2 和 Pulsar 2.7 集群复现 producer 重启，然后跟踪报告的 libprotobuf 故障附近 pulsar.proto.MessageMetadata 的原生序列化过程。完成的标准是确定必需字段缺失的原因，并确认 producer 重启不再因 fatal exception 而终止。

由索引模型根据 Issue 内容生成。