v7.5.5: introduce tidb_ddl_reorg_max_write_speed

Signed-off-by: Aolin <[email protected]>
pingcap · Dec 13, 2024 · 2062e0f · 2062e0f
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diff --git a/sql-statements/sql-statement-admin-alter-ddl.md b/sql-statements/sql-statement-admin-alter-ddl.md
@@ -23,7 +23,7 @@ The following are the supported parameters for different DDL jobs and their corr
 - `ADD INDEX`:
     - `THREAD`: the concurrency of the DDL job. The initial value is set by `tidb_ddl_reorg_worker_cnt`.
     - `BATCH_SIZE`: the batch size. The initial value is set by [`tidb_ddl_reorg_batch_size`](/system-variables.md#tidb_ddl_reorg_batch_size).
-    - `MAX_WRITE_SPEED`: the maximum bandwidth limit for importing index records into each TiKV. The initial value is set by [`tidb_ddl_reorg_max_write_speed`](/system-variables.md#tidb_ddl_reorg_max_write_speed-new-in-v850).
+    - `MAX_WRITE_SPEED`: the maximum bandwidth limit for importing index records into each TiKV. The initial value is set by [`tidb_ddl_reorg_max_write_speed`](/system-variables.md#tidb_ddl_reorg_max_write_speed-new-in-v755-and-v850).
 
   Currently, the preceding parameters only work for `ADD INDEX` jobs that are submitted and running after [`tidb_enable_dist_task`](/system-variables.md#tidb_enable_dist_task-new-in-v710) is disabled.
 

diff --git a/system-variables.md b/system-variables.md
@@ -1695,7 +1695,7 @@ mysql> SELECT job_info FROM mysql.analyze_jobs ORDER BY end_time DESC LIMIT 1;
 - This variable is used to set the priority of executing the `ADD INDEX` operation in the `re-organize` phase.
 - You can set the value of this variable to `PRIORITY_LOW`, `PRIORITY_NORMAL` or `PRIORITY_HIGH`.
 
-### tidb_ddl_reorg_max_write_speed <span class="version-mark">New in v8.5.0</span>
+### tidb_ddl_reorg_max_write_speed <span class="version-mark">New in v7.5.5 and v8.5.0</span>
 
 - Scope: GLOBAL
 - Persists to cluster: Yes