v7.5.5: introduce tidb_ddl_reorg_max_write_speed (#19282)

pingcap · Dec 31, 2024 · da8911c · da8911c
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diff --git a/sql-statements/sql-statement-admin-alter-ddl.md b/sql-statements/sql-statement-admin-alter-ddl.md
@@ -25,7 +25,7 @@ ADMIN ALTER DDL JOBS 101 THREAD = 8;
 - `ADD INDEX`：
     - `THREAD`：并发度，初始值由系统变量 `tidb_ddl_reorg_worker_cnt` 设置。
     - `BATCH_SIZE`：批大小，初始值由系统变量 [`tidb_ddl_reorg_batch_size`](/system-variables.md#tidb_ddl_reorg_batch_size) 设置。
-    - `MAX_WRITE_SPEED`：向每个 TiKV 导入索引记录时的最大带宽限制，初始值由系统变量 [`tidb_ddl_reorg_max_write_speed`](/system-variables.md#tidb_ddl_reorg_max_write_speed-从-v850-版本开始引入) 设置。
+    - `MAX_WRITE_SPEED`：向每个 TiKV 导入索引记录时的最大带宽限制，初始值由系统变量 [`tidb_ddl_reorg_max_write_speed`](/system-variables.md#tidb_ddl_reorg_max_write_speed-从-v755-和-v850-版本开始引入) 设置。
 
   以上设置，当前仅对关闭 [`tidb_enable_dist_task`](/system-variables.md#tidb_enable_dist_task-从-v710-版本开始引入) 后，提交并运行中的 `ADD INDEX` 的作业生效。
 

diff --git a/system-variables.md b/system-variables.md
@@ -1512,7 +1512,7 @@ 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>
+### `tidb_ddl_reorg_max_write_speed` <span class="version-mark">从 v7.5.5 和 v8.5.0 版本开始引入</span>
 
 - 作用域：GLOBAL
 - 是否持久化到集群：是