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restore: add faq for rule not found (pingcap#14383)
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3pointer authored Dec 14, 2023
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Expand Up @@ -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?
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