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?

まず、Node.js 16、pulsar-client 1.6.2、および Pulsar 2.7 クラスターで producer の再起動を再現し、その後、報告された libprotobuf の失敗に関連する pulsar.proto.MessageMetadata のネイティブシリアライズを追跡します。必須フィールドが欠落する理由を特定し、producer の再起動が fatal exception で終了しなくなったことを確認できれば完了です。

索引モデルが issue の本文から書いたものです。