During December 2024, Fahmi focused on improving data pipeline reliability in the apache/hudi repository by addressing a bug in the DebeziumSource component. He ensured that a DataFrame is always emitted with a schema, even when no new messages are present, which prevents empty results and downstream failures. This solution involved Java development and targeted unit tests to validate schema presence in edge cases, particularly when integrating with Kafka and Spark. By enhancing test coverage and stabilizing schema handling, Fahmi’s work reduced error surfaces in data engineering workflows and contributed to more robust ingestion pipelines for the project’s users.