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*: add tidb_enable_stats_owner #18817

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Oct 31, 2024
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*: add tidb_enable_stats_owner #18817

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ec20b22
*: add tidb_enable_stats_owner
hawkingrei Oct 14, 2024
6a9b672
Update system-variables.md
hawkingrei Oct 15, 2024
074c5ee
fix the order in system-variables.md and version-mark in tidb-configu…
Oreoxmt Oct 22, 2024
91eb9ef
Update tidb-configuration-file.md
hawkingrei Oct 28, 2024
941b9db
Apply suggestions from code review
Oreoxmt Oct 28, 2024
3c6169e
fix format
Oreoxmt Oct 28, 2024
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9 changes: 9 additions & 0 deletions system-variables.md
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Expand Up @@ -2329,6 +2329,15 @@ mysql> SELECT job_info FROM mysql.analyze_jobs ORDER BY end_time DESC LIMIT 1;
- 默认值：`ON`
- 这个变量用于控制是否开启 slow log 功能。

### `tidb_enable_stats_owner` <span class="version-mark">从 v8.4.0 版本开始引入</span>

- 作用域：GLOBAL
- 是否持久化到集群：否，仅作用于当前连接的 TiDB 实例
- 是否受 Hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value) 控制：否
- 默认值：`ON`
- 可选值：`OFF`、`ON`
- 用于设置该 TiDB 实例是否可以运行[统计信息自动更新](/statistics.md#自动更新)任务。若当前 TiDB 集群中只有一台 TiDB 实例，则不能禁止该实例运行统计信息自动更新，即不能设置为 `OFF`。
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若当前 TiDB 集群中只有一台 TiDB 实例，将该变量设置为 OFF，TiDB 会报错吗


### `tidb_enable_stmt_summary` <span class="version-mark">从 v3.0.4 版本开始引入</span>

- 作用域：GLOBAL
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7 changes: 7 additions & 0 deletions tidb-configuration-file.md
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Expand Up @@ -947,6 +947,13 @@ TiDB 服务状态相关配置。
+ 该值作为系统变量 [`tidb_enable_ddl`](/system-variables.md#tidb_enable_ddl-从-v630-版本开始引入) 的初始值。
+ 在 v6.3.0 之前，该功能由配置项 `run-ddl` 进行设置。

### `tidb_enable_stats_owner` <span class="version-mark">从 v8.4.0 版本开始引入</span>

+ 用于表示该 tidb-server 是否可以运行[统计信息自动更新](/statistics.md#自动更新)任务。
+ 默认值：`true`
+ 可选值：`true`、`false`
+ 该值作为系统变量 [`tidb_enable_stats_owner`](/system-variables.md#tidb_enable_stats_owner-从-v840-版本开始引入) 的初始值。

### `tidb_stmt_summary_enable_persistent` <span class="version-mark">从 v6.6.0 版本开始引入</span>

> **警告：**
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