[log backup] abnormal checkpoint TS lag
- Dominant language
- Go
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Description
## Bug Report
Please answer these questions before submitting your issue. Thanks!
### 1. Minimal reproduce step (Required)
- create gcp cluster
- use br restore data from v8.1.2 to master version
- after restore finished，start log backup
### 2. What did you expect to see? (Required)
checkpoint ts lag is less than 5min
### 3. What did you see instead (Required)
`[2025/03/11 01:28:15.065 +00:00] [WARN] [regioniter.go:141] ["failed with trying to scan regions"] [error="rpc error: code = DeadlineExceeded desc = context deadline exceeded"] [start=74] [end=75]`
### 4. What is your TiDB version? (Required)
Release Version: v9.0.0-alpha-381-g739a934
Edition: Community
Git Commit Hash: 739a934f631eb413ff3b150b0a7fc9db55eefcbd
Git Branch: HEAD
UTC Build Time: 2025-03-10 06:19:26
GoVersion: go1.23.7
Race Enabled: false
Check Table Before Drop: false
Store: tikv
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Assessment
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