Skip to content

dm: add auto-id-cache-size config #21556

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

Open
hfxsd wants to merge 2 commits into
base: master
Choose a base branch
from
Open

dm: add auto-id-cache-size config #21556

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
21b7fde
Auto-sync: Update Chinese docs from English PR
github-actions[bot] Apr 15, 2026
7230b2f
Update dm/task-configuration-file-full.md
hfxsd Apr 15, 2026
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
6 changes: 5 additions & 1 deletion dm/task-configuration-file-full.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -178,7 +178,7 @@ syncers: # sync 处理单元的运行配置参数
# 如设置为 "0s"，则在 DM 自动进入安全模式的时候报错。
# 如设置为正常值，例如 "1m30s"，则在该任务异常暂停、记录 `safemode_exit_point` 失败、或是 DM 进程异常退出时，把安全模式持续时间调整为 1 分 30 秒。详情可见[自动开启安全模式](https://docs.pingcap.com/zh/tidb/stable/dm-safe-mode#自动开启)。
safe-mode-duration: "60s"
# 设置为 true，DM 会在不增加延迟的情况下，尽可能地将上游对同一条数据的多次操作压缩成一次操作。
# 设置为 true，DM 会会在不增加延迟的情况下，尽可能地将上游对同一条数据的多次操作压缩成一次操作。
Comment thread
hfxsd marked this conversation as resolved.
Outdated
# 如 INSERT INTO tb(a,b) VALUES(1,1); UPDATE tb SET b=11 WHERE a=1; 会被压缩成 INSERT INTO tb(a,b) VALUES(1,11); 其中 a 为主键
# 如 UPDATE tb SET b=1 WHERE a=1; UPDATE tb(a,b) SET b=2 WHERE a=1; 会被压缩成 UPDATE tb(a,b) SET b=2 WHERE a=1; 其中 a 为主键
# 如 DELETE FROM tb WHERE a=1; INSERT INTO tb(a,b) VALUES(1,1); 会被压缩成 REPLACE INTO tb(a,b) VALUES(1,1); 其中 a 为主键
Expand All @@ -189,6 +189,10 @@ syncers: # sync 处理单元的运行配置参数
# 如 DELETE FROM tb WHERE a=1; DELETE FROM tb WHERE a=2 会变成 DELETE FROM tb WHERE (a) IN (1),(2)；其中 a 为主键
multiple-rows: false

# 当该值设置为大于 0 时，DM 会为所有新创建的 AUTO_INCREMENT 表设置 AUTO_ID_CACHE 大小为对应的值。
# 例如，如果设置为 30，语句 `CREATE TABLE tb (`id` INT AUTO_INCREMENT);` 将被修改为 `CREATE TABLE tb (`id` INT AUTO_INCREMENT) /*T![auto_id_cache] AUTO_ID_CACHE = 30 */;`
auto-id-cache-size: 0

validators: # 增量数据校验的运行配置参数
global: # 配置名称
# full：校验每一行中每一列数据是否正确
Expand Down