Avishnu Srinivasan upgraded the build environment for the apache/celeborn repository by updating Maven to version 3.9.9, focusing on improving build reliability and compatibility with newer dependencies. The work involved careful dependency management and ensured that the upgrade introduced no user-facing changes, thereby maintaining existing behavior and minimizing risk for future development. Avishnu used Java and Maven, documenting the process with clear commit messages to support traceability and auditability. While the scope was limited to a single feature and did not include bug fixes, the work demonstrated attention to stability and maintainability in the project’s build infrastructure.