Schema Registry创建新Schema时Subject Not Found错误（40401）求助

异常场景 #

• 使用AKHQ GUI注册新Schema时，触发「Subject not found」错误（错误码40401），无法理解创建新Schema为何要求Subject已存在。
• 改用curl命令创建Schema：

  curl -X POST -H "Content-Type: application/vnd.schemaregistry.v1+json" -k --data @key http://my-custom-schemaregistry.org/subjects/MY_TOPIC-value/versions?normalize=false
  

  命令返回Schema ID 123，但调用GET接口 http://my-custom-schemaregistry.org/schemas/ids/123 查询该ID时返回错误：

  {"error_code":40403,"message":"Schema 123 not found"}
  

相关日志 #

初始操作日志 #

[2023-05-30 14:11:39,104] INFO 10.237.87.231 - - [30/May/2023:14:11:39 +0000] "GET /subjects/MY_TOPIC-key/versions/latest HTTP/1.1" 404 68 "-" "Java/11.0.17" 2 (io.confluent.rest-utils.requests)
[2023-05-30 14:11:39,109] INFO Registering new schema: subject MY_TOPIC-key, version null, id null, type null, schema size 177 (io.confluent.kafka.schemaregistry.rest.resources.SubjectVersionsResource)
[2023-05-30 14:11:39,118] INFO 10.237.87.231 - - [30/May/2023:14:11:39 +0000] "POST /subjects/MY_TOPIC-key/versions?normalize=false HTTP/1.1" 200 11 "-" "Java/11.0.17" 10 (io.confluent.rest-utils.requests)
[2023-05-30 14:11:39,120] ERROR Request Failed with exception  (io.confluent.rest.exceptions.DebuggableExceptionMapper)
io.confluent.rest.exceptions.RestNotFoundException: Subject 'MY_TOPIC-key' not found.
    at io.confluent.kafka.schemaregistry.rest.exceptions.Errors.subjectNotFoundException(Errors.java:77)
    at io.confluent.kafka.schemaregistry.rest.resources.SubjectVersionsResource.getSchemaByVersion(SubjectVersionsResource.java:141)
    at jdk.internal.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)

后续测试日志 #

[2023-05-30 21:37:26,752] INFO Registering new schema: subject TEST_TEMP, version null, id null, type null, schema size 756 (io.confluent.kafka.schemaregistry.rest.resources.SubjectVersionsResource)
[2023-05-30 21:37:26,765] INFO 10.237.87.231 - - [30/May/2023:21:37:26 +0000] "POST /subjects/TEST_TEMP/versions?normalize=false HTTP/1.1" 200 11 "-" "Java/11.0.17" 14 (io.confluent.rest-utils.requests)
[2023-05-30 21:37:26,766] ERROR Request Failed with exception  (io.confluent.rest.exceptions.DebuggableExceptionMapper)
io.confluent.rest.exceptions.RestNotFoundException: Subject 'TEST_TEMP' not found.

内容的提问来源于stack exchange，提问作者hudi