*: add tidb_enable_stats_owner (pingcap#19109)

Author: hawkingrei

system-variables.md

@@ -2662,6 +2662,15 @@ mysql> SELECT job_info FROM mysql.analyze_jobs ORDER BY end_time DESC LIMIT 1;
 - Controls whether to enable the temporary storage for some operators when a single SQL statement exceeds the memory quota specified by the system variable [`tidb_mem_quota_query`](/system-variables.md#tidb_mem_quota_query).
 - Before v6.3.0, you can enable or disable this feature by using the TiDB configuration item `oom-use-tmp-storage`. After upgrading the cluster to v6.3.0 or a later version, the TiDB cluster will initialize this variable using the value of `oom-use-tmp-storage` automatically. After that, changing the value of `oom-use-tmp-storage` **does not** take effect anymore.
 
+### tidb_enable_stats_owner <span class="version-mark">New in v8.4.0</span>
+
+- Scope: GLOBAL
+- Persists to cluster: No, only applicable to the current TiDB instance that you are connecting to.
+- Applies to hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value): No
+- Default value: `ON`
+- Possible values: `OFF`, `ON`
+- This variable controls whether the corresponding TiDB instance can run [automatic statistics update](/statistics.md#automatic-update) tasks. If there is only one TiDB instance in the current TiDB cluster, you cannot disable automatic statistics update on this instance, which means you cannot set this variable to `OFF`.
+
 ### tidb_enable_stmt_summary <span class="version-mark">New in v3.0.4</span>
 
 > **Note:**

tidb-configuration-file.md

@@ -955,6 +955,13 @@ Configuration items related to read isolation.
 - The value of this configuration will initialize the value of the system variable [`tidb_enable_ddl`](/system-variables.md#tidb_enable_ddl-new-in-v630)
 - Before v6.3.0, this configuration is set by `run-ddl`.
 
+### `tidb_enable_stats_owner` <span class="version-mark">New in v8.4.0</span>
+
+- This configuration controls whether the corresponding TiDB instance can run [automatic statistics update](/statistics.md#automatic-update) tasks.
+- Default value: `true`
+- Possible values: `true`, `false`
+- The value of this configuration will initialize the value of the system variable [`tidb_enable_stats_owner`](/system-variables.md#tidb_enable_stats_owner-new-in-v840).
+
 ### `tidb_stmt_summary_enable_persistent` <span class="version-mark">New in v6.6.0</span>
 
 > **Warning:**