代码复核：建议通过，未发现需要 Request Changes 的确定性问题。审查 HEAD：267d535d1ff53d1d91cba6f6617b881ec17a1bd6。

设计判断：这是现有 legacy TEXT 恢复路径的局部解析性能修复，不是新增 schema 恢复能力或重构 catalog 所有权。缓存只记住确定性的语法证据，原解析器和恢复校验继续是唯一语义实现；无需另建通用缓存框架。对新增进程级状态单独审查了所有权、并发和边界。

逐项核对：

• exact SQL 为 key；解析仍枚举原有 SQL modes。仅成功解析入缓存，错误/歧义不缓存，超出限额则回到原解析路径。
• SQL/名称字符串和列切片由缓存复制持有，不保留 AST、TableDef、事务或解析器借用内存；现有消费者只读 evidence。
• 当前表身份、Seqnum、列兼容性、CREATE LIKE 的当前数据库/事务 resolver 每次重新检查。因此 DROP/ALTER/新快照不会直接复用旧 catalog 结论。
• 32 槽、SQL 16KiB、256 列、单条 64KiB 限制，保留 payload 至多 2MiB 加固定头部；读者持有的旧 entry 由普通 Go 引用生命周期释放。解析/分配在锁外，锁内仅有限数组查找/发布，没有后台 worker 或无界 miss registry。
• 测试包含 ownership、并发发布/淘汰、live LIKE resolver、identity/Seqnum、防歧义和超限回退。冷 miss 仍支付原 64-mode 解析成本，这是明确的取舍，不是所有 schema 场景都会加速。

验证边界：当前 HEAD 的 CI 40038653492 已成功，并核对其 UT 日志的 planner race 分片完成；diff --check 通过。本次未在本机重跑 planner/AgentLogs，PR 的真实数据收益是作者证据。

当前认证账号也是 PR 作者，故以 COMMENT 记录建议通过；这不是 GitHub 正式 Approval。

mo-bot review · mo-bot-local · review

Commit: 267d535d1ff53d1d91cba6f6617b881ec17a1bd6

Assessment: approve

Reviewed all three changed files and frontend, internal SQL and dump/load consumers. The cache preserves the existing parser as the semantic owner and caches only detached syntax evidence; identity, Seqnum, compatibility and transaction resolution remain live. Bounded storage and short lock sections justify the added shared state. Correctness, ownership, concurrency and test-quality review found no actionable defects.

Model: gpt-6-astra / xhigh

Session: 01a13dcf-1517-7f90-b3f9-c5f9f9e7031b · slot 0 · generation 1

Validation:

• Passed 16 focused normal-mode tests, 15 focused race tests and 100 repetitions of TestLegacyTextParseCacheConcurrentPublication. Receipts: 1792808002309272390-3.json, 1792807873389609685-3.json and 1792807909616244513-3.json.

• Isolation preflight passed. Verified 192 native input files and accepted the recovered libraries through the current repository provenance checker.

• A/B/B/A microbenchmarks used byte-exact merge-base recovery code and identical fixtures. Across six samples per variant, median warm recovery improved from 369.6 µs to 0.331 µs; warm LIKE improved from 482.8 µs to 7.45 µs. Cold misses added approximately 192 bytes and three allocations without observed timing slowdown. Plain-TEXT control timing varied by approximately 1%. Receipt: 1792808085688938917-3.json.

• Reused supplied exact-head CI build, UT/coverage, static-analysis and BVT results for broader coverage.

• Final audit confirmed unchanged source and reconciled commands, fingerprints, exits and retained logs. Receipt: 1792808180101459078-4.json. Evidence resides under /home/xupeng/.local/state/mo-bot/jobs/cc8335ca8c90f6ae76657781/attempt-1 in review-record.json and review-evidence-audit.json.

Limitations:

• Author-reported AgentLogs measurements and the named delivery artifact were not independently reconciled. Local measurements establish recovery costs, not end-to-end SQL gains.

• Full-package and SQL BVT checks were not repeated locally; broader coverage relies on the supplied exact-head CI snapshot. Per-case CI logs were unavailable.

• The linked issue body was not supplied independently; its behavioral contract was assessed from the PR description.