When I was to send the message to kafka's service, the message content was lost when I have found it by kafkatool

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Description

Recently, I have met an issue that I want to send a lot of the message to kafka service, the format of the message is json , it looked like:
{
"EventSort": 16,
"Height": 60,
"ShotTime": "20240815162354",
"StoragePath": "http://xxx.xxx.x.xxx:xxxxx/download?picid=ft=Jpeg&sz=3849&st=c&cid=621202&fp=%2Fopt%2Fcloud%2F20240815%2F3_20240815162418_327853939905100000011.cts&ro=608923&po=873674",
"Type": "02",
"Data": "/9j/4AAQSkZJRgA......AKKKKACiiigD/2Q", // loaded the base64 data of the picture
"Width": 76,
"FileFormat": "Jpeg",
"DeviceID": "62122170001320000020",
"ImageID": "62122170001320000020022024081516235429186"
}

the field of data ' s value is base64 picture, it may be included 2~5 numbers inside of the Json, when I put the message to the Kafka by the Librdkafa's library, I found the object of the Json was lost and I was try saving the message to the locate file, the message in the content of the Json was complete in the file , but it was not complete in the kafka' service when I observered by kafkatool,
I don't known why it did, can you help me with something?

Checklist

• librdkafka version 0.8.1
• Apache Kafka version: kafka_2.11-1.0.0
• librdkafka client configuration: queue.buffering.max.kbytes=2000000 queue.buffering.max.messages=1000000 batch.num.messages=1 request.timeout.ms value=2000 queue.buffering.max.kbytes=20000 queue.buffering.max.messages=10000 message.max.bytes=4194304
• Operating system: CentOS7.6 x64