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[v6.5.7] add configuration performance.force-init-stats (#13840) #15986

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merged 4 commits into from
Jan 8, 2024
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[v6.5.7] add configuration performance.force-init-stats (#13840) #15986

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4bf8320
This is an automated cherry-pick of #13840
xuyifangreeneyes May 6, 2023
afb1476
Discard changes to releases/release-7.1.0.md
Oreoxmt Jan 3, 2024
aa8149e
resolve conflicts
Oreoxmt Jan 3, 2024
600afa4
make ci happy
Oreoxmt Jan 3, 2024
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7 changes: 7 additions & 0 deletions tidb-configuration-file.md
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Expand Up @@ -566,6 +566,13 @@ TiDB 配置文件比命令行参数支持更多的选项。你可以在 [config/
+ 用于控制 TiDB 是否开启统计信息缓存的内存上限。
+ 默认值：false

### `force-init-stats` <span class="version-mark">从 v6.5.7 版本开始引入</span>

+ 用于控制 TiDB 启动时是否在统计信息初始化完成后再对外提供服务。
+ 默认值：false
+ 当 `force-init-stats` 为 `true` 时，TiDB 启动时会等到统计信息初始化完成后再对外提供服务。在表和分区数量较多的情况下，将 `force-init-stats` 设置为 `true` 可能会导致 TiDB 从启动到开始对外提供服务的时间变长。
+ 当 `force-init-stats` 为 `false` 时，TiDB 在统计信息初始化未完成时即可对外提供服务，但由于统计信息初始化未完成，优化器会用 pseudo 统计信息进行决策，可能会产生不合理的执行计划。

## opentracing

opentracing 的相关的设置。
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