crossoverJie opened a new issue, #20945: URL: https://github.com/apache/pulsar/issues/20945
### Search before asking - [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar. ### Version master ### Minimal reproduce step ## Create producer `Producer p = pulsarClient.newProducer(Schema.JSON(String.class)).create()` It would generate the following schema: ```json { "version": 0, "schemaInfo": { "name": "schema-test-2", "schema": "\"string\"", "type": "JSON", "timestamp": 1691379461556, "properties": { "__alwaysAllowNull": "true", "__jsr310ConversionEnabled": "false" } } } ``` And query from `Trino`: ```sql select * from pulsar."public/default"."schema-test-2"; ```  `Trino` service did not report any exception.  ### What did you expect to see? Query success. ### What did you see instead? Query 20230807_075157_00000_b7hfa failed: Not a record: "string" ### Anything else? This exception was thrown from there: https://github.com/apache/pulsar/blob/2ab184e49a036a1dd10dc537bef4ab034a5ad5e0/pulsar-client/src/main/java/org/apache/pulsar/client/impl/schema/generic/GenericSchemaImpl.java#L43-L46 Because there are a large amount of these types of codes in our production environment, we hope that they can be compatible in this situation in the `pulsar-sql` module. When parsing the Schema encounters exceptions, use defaultSchema to regenerate, like this:  ### Are you willing to submit a PR? - [X] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
