Contributed to the apache/fluss repository by enhancing the integration testing framework for Apache Flink streaming applications. Focused on expanding test coverage, the work introduced support for the latest scan startup mode in the changelog virtual table, enabling earlier detection of edge cases during continuous integration. Leveraging Java and stream processing expertise, the developer implemented new integration tests that align with recent pull requests to improve test reliability and release readiness. This targeted feature strengthens confidence in Flink streaming deployments by ensuring that new features are thoroughly validated, while minimizing disruption to existing workflows and accelerating the safe delivery of releases.