During April 2026, this developer focused on backend reliability within the apache/gravitino repository, addressing a NullPointerException in the dropPartitionStatistics API. By introducing a null-safe helper method to extract partition names and refining error handling, they ensured that client-side bad requests no longer triggered internal server errors. Their work included implementing a regression test to guard against future issues with null drops, validated through targeted server tests. Utilizing Java and REST API development skills, they enhanced the robustness of backend operations, contributing to more predictable error responses and improved API stability, even though no new features were added during this period.