June 2026 monthly summary focusing on key accomplishments in core Doris work and related documentation. The month delivered LDAP-based access control enhancements and comprehensive documentation to empower secure, scalable user management.

Month: 2026-05 — Focused on reliability improvements in the Doris backend's time-sharing scheduler. The principal deliverable was a bug fix to TimeSharingTaskExecutor that ensured queued task counts are correctly updated when tasks are removed mid-queue, aligning queue size metrics and capacity checks with the actual queue state. This included syncing _total_queued_tasks with the split queue and token state to prevent false positives for queue-full conditions. Added regression and unit tests to validate queue accounting under removal scenarios, and prepared release-notes style documentation for the improvement. Business impact: Removes false queue-full rejections, reduces dropped submissions, and improves throughput for concurrent query processing by ensuring accurate queue reporting under dynamic task removals. Key technologies and skills demonstrated: C++ concurrency and task scheduling, robust test-driven development (regression/unit tests), code hygiene, and documentation alignment.