krespo commented on PR #13748:
URL: https://github.com/apache/kafka/pull/13748#issuecomment-1562728086
@gharris1727
First of all thank you for your feedback.
As you said, I know that feature is only available in kafka version 3.5,
which hasn't been released yet.
The open source versions I'm using are as follows:
```
debezium: 2.1
kafka connect: 2.7.1
mysql: 8
```
When the column in mysql is "nullable" and "default value" is set, we
founded that the message that the kafka connector sends through the
JsonConverter is always the "default value", even though the column is updated
to "null".
So I checked the contents of "KAFKA-8713", and after building the source
code of Kafka 3.5 version and creating "connect-json-3.5.0.jar", the
"${kafka_connect_home} /libs" in the connect-json library was replaced with a
new version.
Afterwards, I set the "replace.null.with.default" setting to "false", but
found that the same problem still occurs.
And through debugging, it was found that to solve the "KAFKA-8713" issue,
not only the connect-json module but also the connect-api module had to be
modified.
So I made a pull request for my modified code.
Currently, connect-json.jar and connect-api.jar have been replaced with
version 3.5, and they are working properly.
Please check the code I modified once again. thank you
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