Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

*: add tidb_enable_stats_owner #19109

Merged
merged 6 commits into from
Oct 31, 2024
Merged

*: add tidb_enable_stats_owner #19109

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
dbbd2af
*: add tidb_enable_stats_owner
hawkingrei Oct 14, 2024
49f1aae
Update system-variables.md
hawkingrei Oct 15, 2024
97970b3
fix the order in system-variables.md and version-mark in tidb-configu…
Oreoxmt Oct 22, 2024
ab63d20
Update tidb-configuration-file.md
hawkingrei Oct 28, 2024
c225403
Update tidb-configuration-file.md
hawkingrei Oct 28, 2024
ab01264
Apply suggestions from code review
Oreoxmt Oct 28, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions system-variables.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2638,6 +2638,15 @@ 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:**
Expand Down
7 changes: 7 additions & 0 deletions tidb-configuration-file.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -951,6 +951,13 @@ 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 become a stats owner or not.
hawkingrei marked this conversation as resolved.
Show resolved Hide resolved
- Default value: `true`
- Possible values: `OFF`, `ON`
hawkingrei marked this conversation as resolved.
Show resolved Hide resolved
- 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)
Oreoxmt marked this conversation as resolved.
Show resolved Hide resolved

### `tidb_stmt_summary_enable_persistent` <span class="version-mark">New in v6.6.0</span>

> **Warning:**
Expand Down
Loading