Month: 2025-11 – Concise monthly summary of achievements for Greptime projects. Key features delivered: - Region Service: BuildIndexRequest API added to RegionRequestHeader in GreptimeProto, enabling region-level handling of build index operations. Commit: 0df99f09f1d6785055b2d9da96fc4ecc2bdf6803. - Manual Index Build on Demand: Greptimedb introduced on-demand index building with a new command, updated data structures, and tests for correctness and idempotence. Commit: 2783a5218e43410cf185b2b60cbeb4ccfe0f4caa. Major bugs fixed: - No major bugs fixed reported in the provided data. Overall impact and accomplishments: - Strengthened indexing workflows across proto and DB components, enabling on-demand and region-based indexing with improved reliability and scalability. These changes reduce operational friction and support dynamic workloads. Technologies/skills demonstrated: - API design and protocol extension in RegionRequestHeader, indexing workflow orchestration, test coverage, and cross-repo collaboration.

October 2025 summary for GreptimeTeam/greptimedb: Delivered Async Index Building Framework enabling non-blocking index builds to boost availability and performance. Implemented IndexBuildTask with three build types (flush, compaction, schema changes), expanded region server to handle BuildIndex requests, added configuration for background index builds, and strengthened testing, error handling, and manifest updates. Fixed critical bug in test_index_build_type_compact. Key commits: 779865d389130c34bfd3944a5f456ceecc7c8174; a1af4dce0c8807b7f6e16339939308510b9a7102; 03a29c6591e97de34196069d5c196e501016d3e1.

Monthly summary for 2025-08 focusing on delivering architecture changes to improve write availability and scalability in GreptimeDB. Implemented an asynchronous index build mechanism via an RFC, designed to prevent prolonged write suspensions during index creation along with clear triggers, metadata handling, process flow, potential drawbacks, and future work. Committed accompanying RFC documentation (docs(rfc): async index build (#6757)) to establish a baseline for non-blocking index builds and facilitated safe rollout planning.