From 5e8bdd7ab452e6a9f5f8a121a58607a1576ed8fd Mon Sep 17 00:00:00 2001
From: 3pointer <luancheng@pingcap.com>
Date: Thu, 14 Dec 2023 13:54:20 +0800
Subject: [PATCH] restore: add faq for rule not found (#14383)

---
 faq/backup-and-restore-faq.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/faq/backup-and-restore-faq.md b/faq/backup-and-restore-faq.md
index eff3e17b4b50..a6b67a924039 100644
--- a/faq/backup-and-restore-faq.md
+++ b/faq/backup-and-restore-faq.md
@@ -297,6 +297,10 @@ br restore full -f 'mysql.usertable' -s $external_storage_url --with-sys-table
 - 系统变量表（`mysql.tidb`、`mysql.global_variables`）
 - [其他系统表](https://github.com/pingcap/tidb/blob/master/br/pkg/restore/systable_restore.go#L31)
 
+### 恢复的时候，报错 `cannot file rewrite rule`，该如何处理？
+
+遇到这种情况，请检查恢复集群中是否存在跟备份数据同名但表结构不一致的表。大多数情况是因为恢复集群的表缺失了索引导致。您可以尝试先删除该表，然后再次进行恢复操作。
+
 ## 备份恢复功能相关知识
 
 ### 备份数据有多大，备份会有副本吗？