January 2026: Delivered reliability and correctness improvements to MariaDB/server, focusing on JSON handling and view-based DML. The fixes reduce incorrect results from JSON_VALUE and eliminate a crash condition on second execution of multi-table DELETE from a view, improving production stability and data correctness.

Month: 2025-12. Focused on security hardening and stability for MariaDB/server. Delivered two critical bug fixes across privilege enforcement and encryption key handling, contributing to more secure data exposure controls and reliability in encryption-related operations. The changes reduce exposure risk for INSERT ... RETURNING, and prevent crashes when enabling certain plugins by ensuring NULL threads do not dereference port values. Commits underpinning these fixes are linked to MDEV-37950 and MDEV-38312.

November 2025 performance and stability focus on MariaDB/server: delivered a critical fix to robustly handle deep JSON structures by removing recursion in json_normalize_sort, preventing stack overflow for very nested payloads. The change reduces crash risk and enables larger JSON workloads in production, aligning with reliability and scalability goals. Commit reference: 8abdcba53463b3c1cf0d225b99bc4f0db43dfe39 (MDEV-37082).

Month 2025-10: Focused on hardening JSON handling in MariaDB/server. Implemented fixes to ensure correctness in JSON path comparisons, correct handling of JSON data types in views (FRM writing), and increased temp table field length for json_array_intersect, accompanied by tests to validate correctness. These changes improve query accuracy, stability of JSON-related features, and test reliability.

Overview for 2025-09: Delivered critical stability improvements in MariaDB/server with focused bug fixes that reduce crash surface and improve correctness in edge-case execution. Key outcomes include corrected error handling for invalid default parameters in prepared statements and a guard against crashes in JSON_ARRAY_INTERSECT when called with empty arrays. These changes, accompanied by new tests, reduce support incidents and improve reliability for production deployments.

Concise monthly summary for 2025-05 focusing on business value and technical achievements in the mariadb-columnstore-engine. Delivered unbounded JSON depth support and updated related tests and code paths to enable deeper JSON structures for analytics and integration workloads.

In April 2025, delivered a stability and correctness improvement for MariaDB/server by fixing a JSON extraction crash (json_extract) caused by an incorrect comparison function. The fix replaces the faulty comparator with the correct one to ensure proper JSON path handling and prevent crashes during path evaluation. The change is tied to MDEV-21530 and committed as dc9bdb42168989e8b93e463d2c0b8638a9b0ce1f, reflecting a targeted, review-friendly fix with clear traceability.

February 2024: Delivered Unlimited JSON Depth Support for MariaDB/server by replacing the hard limit with dynamic parsing, enabling unlimited nesting and enhanced JSON capabilities. Implemented dynamic memory management and new parsing structures to support deep JSON documents, laying the groundwork for more advanced JSON features and performance improvements. This work improves developer experience and expands business value by enabling complex JSON workloads within the database.