June 2026 — Apache SeaTunnel (apache/seatunnel). Focused on stabilizing Flink-based CDC workflows during schema evolution under multi-parallelism. Implemented a Flink 1.13-specific SourceExecuteProcessor and enhanced SchemaOperator to manage schema changes and checkpointing more robustly, ensuring checkpoint failures no longer cause job hangs. This work reduces downtime and increases reliability of data pipelines in dynamic schema environments.

In May 2026, delivered CDC Schema Evolution Improvements for apache/seatunnel (Connector-V2), expanding schema evolution support to SQL Server, addressing stability and correctness gaps, and ensuring reliable capture of DDL history. Key outcomes: SQL Server schema evolution support added; deadlock hang in Flink schema evolution with MySQL CDC fixed; SQL Server DDL history LSN boundary corrected to prevent loss of schema events. Impact: improved reliability and data integrity of CDC pipelines, reduced operator toil, better cross-database compatibility. Technologies: Flink, Connector-V2, SQL Server CDC, MySQL CDC, LSN handling, schema evolution.

February 2026 — Apache Seatunnel (apache/seatunnel) Key accomplishments: - Implemented Flink Parallelism Configuration Enhancements to support multiple parallelism configurations and streamlined the API by removing Flink-specific logic. - Introduced BroadcastSchemaSinkOperator to handle schema changes consistently across parallel tasks. - Maintained momentum through a focused commit (89b3e1ce1c21f773fd8214fbce11f78a0e76ae0e) aligned with #10107. Major bugs fixed: - No critical bugs identified this month; API refactor reduces regression risk by decoupling Flink-specific logic from the public API. Impact and accomplishments: - Increased runtime flexibility and scalability for Flink-based deployments. - Cleaner API surface improves maintainability and downstream integration. - Improved schema evolution handling across parallel tasks, enabling smoother deployments in multi-task environments. Technologies/skills demonstrated: - Flink, Seatunnel architecture, API design and cleanup, parallelism management, schema evolution, commit-driven development.