Month: 2025-10 — arana-db/kiwi Key features delivered: - Implemented persistent cursor management in the storage module, enabling loading and storing of cursor start keys across data types. Introduced APIs: load_cursor_start_key and store_cursor_start_key, with comprehensive unit tests to ensure correctness. Major bugs fixed: - No major bugs fixed this month. Overall impact and accomplishments: - Improves reliability of long-running data scans and exports by preserving iteration state, reducing rework and potential data gaps. Strengthens storage API stability and test coverage, supporting future feature work and CI readiness. Technologies/skills demonstrated: - API design for storage-related features, unit testing, and test-driven development; conventional commit hygiene and traceability. Top achievements: - Implemented persistent cursor management with load_cursor_start_key and store_cursor_start_key APIs - Added comprehensive unit tests for cursor persistence - Linked change to commit c7e90a5c477f285752d7585c3f0193d24ebd5252 (#139)

July 2025 monthly summary focusing on operational stability and observability improvements. Primary effort was reducing non-actionable log noise during catalog loading without altering user-visible behavior.

June 2025: Stabilized core catalog operations in apache/gravitino by implementing null safety in PropertiesMetadata. Added null checks before using Optional.isPresent(), and expanded unit test coverage to validate null-safety scenarios. Linked to commit 521688ae42ecd4cd1cdb37a4d3365739c34b073e (#7310). This work reduces runtime NPE risk, improves reliability of catalog workflows, and strengthens overall code quality.