liaorui opened a new issue, #7767: URL: https://github.com/apache/inlong/issues/7767
### What happened Doris connector does not real delete record because of columns header losing when JSON format system loading. ### What you expected to happen When source cdc delete one record, Doris connector should invoke `SystemLoad` api with `columns` header which contains `__DORIS_DELETE_SIGN__` flag. If `columns` header is lost, Doris server will not delete the record. ### How to reproduce Run JUnit test case in local environment. ### Environment _No response_ ### InLong version master ### InLong Component InLong Sort ### Are you willing to submit PR? - [X] Yes, I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- 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: dev-unsubscr...@inlong.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org