Worked on the apache/gravitino repository to enhance the stability of analytics pipelines by addressing a critical bug in partition statistics processing. Focused on defensive programming and error handling in Java, the developer implemented a null-safety fix within the PartitionStatisticsListResponse component to prevent potential NullPointerExceptions during data processing. To ensure the robustness of this solution, a dedicated unit test was added to validate null-element handling and guard against future regressions. This targeted improvement reduced production risk and improved data integrity, demonstrating disciplined testing practices and effective code review participation while contributing to more reliable and maintainable backend systems.