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 doc for experimental variable tidb_store_batch_size #11562

Merged
merged 7 commits into from
Dec 9, 2022
Merged

add doc for experimental variable tidb_store_batch_size #11562

Changes from all commits
Commits
Show all changes
7 commits
Select commit Hold shift + click to select a range
ad35ee5
add tidb_store_batch_size variable
you06 Dec 8, 2022
ce8fa0d
Update system-variables.md
you06 Dec 8, 2022
6c2bb76
more notice
you06 Dec 8, 2022
fc5e486
not an experimental variable'
you06 Dec 8, 2022
d4d9034
Update system-variables.md
you06 Dec 8, 2022
3daf2db
Update system-variables.md
you06 Dec 8, 2022
75a3f05
Update system-variables.md
you06 Dec 8, 2022
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
13 changes: 13 additions & 0 deletions system-variables.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3744,6 +3744,19 @@ For details, see [Identify Slow Queries](/identify-slow-queries.md).
- Unit: Seconds
- This variable is used to set the refresh time of [statement summary tables](/statement-summary-tables.md).

### `tidb_store_batch_size`

> **Warning:**
>
> Currently, `tidb_store_batch_size` is not stable yet. This variable might be removed in a future release. It is not recommended that you use it in production environments. It is not recommended to change the default value.

- Scope: SESSION | GLOBAL
- Persists to cluster: Yes
- Type: Integer
- Default value: `0`
- Range: `[0, 25000]`
- This variable is used to control the batch size of the Coprocessor Tasks of the `IndexLookUp` operator. `0` means to disable batch. When the number of tasks is relatively large and slow queries occur, you can increase this variable to optimize the query.

### tidb_store_limit <span class="version-mark">New in v3.0.4 and v4.0</span>

- Scope: GLOBAL
Expand Down