December 2024 — Key outcomes: Delivered two documentation enhancements across qiancai/docs-cn and qiancai/docs to improve TiDB query performance analysis and execution plan understanding. These changes clarify task types (root, cop, batchCop, MPP) and expand operator execution and timing details (including MPP timing) to help users analyze and optimize queries more effectively. No major bugs fixed this month; focus was on knowledge enrichment and documentation consistency to reduce support time and accelerate onboarding. Technologies/skills demonstrated include documentation authoring, cross-repo collaboration, TiDB query execution concepts, and effective writing for developer audience.

2024-11 Monthly Summary: Focused on improving MPP version handling and error reporting through cross-repo documentation updates in qiancai/docs-cn and qiancai/docs. Implemented enhancements to the mpp_version system variable via documentation and spec changes, adding value '2' as an optional version and clarifying the default behavior when unspecified. These updates align with v7.3.0 and are designed to reduce troubleshooting time and misreporting in TiFlash-based MPP tasks. No code changes were required; the work centers on accurate guidance, consistency, and user-facing documentation that enables faster issue resolution and smoother onboarding for distributed SQL workloads. Key coordinates with TiFlash error reporting improvements and readiness for broader adoption across docs platforms.