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

tidb: add description for var tidb_ddl_reorg_max_write_speed #19071

Merged
merged 8 commits into from
Nov 26, 2024
Merged

tidb: add description for var tidb_ddl_reorg_max_write_speed #19071

Changes from 1 commit
Commits
Show all changes
8 commits
Select commit Hold shift + click to select a range
76ba5c0
tidb: add description for var `tidb_ddl_reorg_max_write_speed`
CbcWestwolf Nov 13, 2024
38ec7f5
Update system-variables.md
CbcWestwolf Nov 14, 2024
11d3e2e
Update system-variables.md
CbcWestwolf Nov 18, 2024
43dbddc
Update system-variables.md
CbcWestwolf Nov 18, 2024
30f0e03
Update system-variables.md
CbcWestwolf Nov 19, 2024
b2e0d26
update
CbcWestwolf Nov 19, 2024
1ced11c
Update system-variables.md
CbcWestwolf Nov 22, 2024
0f87779
Update system-variables.md
CbcWestwolf Nov 26, 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
10 changes: 10 additions & 0 deletions system-variables.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1516,6 +1516,16 @@ mysql> SELECT job_info FROM mysql.analyze_jobs ORDER BY end_time DESC LIMIT 1;
- 可选值：`PRIORITY_LOW`、`PRIORITY_NORMAL`、`PRIORITY_HIGH`
- 这个变量用来设置 `ADD INDEX` 操作 `re-organize` 阶段的执行优先级，可设置为 `PRIORITY_LOW`/`PRIORITY_NORMAL`/`PRIORITY_HIGH`。

### `tidb_ddl_reorg_max_write_speed` <span class="version-mark">从 v8.5.0 版本开始引入</span>
tangenta marked this conversation as resolved.
Show resolved Hide resolved

- 作用域：GLOBAL
- 是否持久化到集群：是
- 是否受 Hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value) 控制：否
- 类型：整数型
- 默认值：`0`
tangenta marked this conversation as resolved.
Show resolved Hide resolved
- 范围：`[0, 1125899906842624]`（1 PiB）
CbcWestwolf marked this conversation as resolved.
Show resolved Hide resolved
- 添加索引加速功能开启（由变量 `tidb_ddl_enable_fast_reorg` 控制）时，这个变量用于限制向每个 TiKV 节点写入的带宽大小，单位为字节。 默认值 `0` 表示不限制写入带宽。可以通过 `'1GiB'`、`256MiB` 等方式设置该变量。
CbcWestwolf marked this conversation as resolved.
Show resolved Hide resolved

### `tidb_ddl_reorg_worker_cnt`

- 作用域：SESSION | GLOBAL
Expand Down