PiTR restore failed due to restored_ts > log backup range

[fubinzh]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

1. Start K8S cluster PD/TiDB: 4U 8G， TiKV: 8U 16G
2. Start log backup
3. Run full backup
4. Run workload (QPS: insert&update 1K)
5. Wait checkpoint move forward TS1 and do PiTR restore to TS1

2. What did you expect to see? (Required)

PiTR restore should succeed

3. What did you see instead (Required)

PiTR restore failed

[2022/07/15 15:13:51.431 +08:00] [INFO] [br.go:563] ["waitLogBackupCheckpoint success"] ["current checkpoint"=2022/07/15 07:12:24.000 +00:00]
...
2022-07-15T15:13:51.490+0800    INFO    host/host.go:30 Execute command {"command": " /br  restore  point \"--storage\" \"s3://tmp/br-log-backup847ce747-ae23-4c21-a6c5-e81ca2cfa0a5/Log?access-key=minioadmin&secret-access-key=minioadmin&endpoint=http%3a%2f%[2fminio.pingcap.net](http://2fminio.pingcap.net/)%3a9000&force-path-style=true\" \"--pd\" \"http://dst-tidb-pd.fb-pitr-4u-t6djr:2379/\" \"--restored-ts\" \"434600400949870596\" \"--full-backup-storage\" \"s3://tmp/br-log-backup847ce747-ae23-4c21-a6c5-e81ca2cfa0a5/Full?access-key=minioadmin&secret-access-key=minioadmin&endpoint=http%3a%2f%[2fminio.pingcap.net](http://2fminio.pingcap.net/)%3a9000&force-path-style=true\"", "timeout": "60m", "resource name": "br"}
2022-07-15T15:13:51.493+0800    INFO    k8s/client.go:267       it should be noted that a long-running command will not be interrupted even the use case has ended. For more information, please refer to https://github.com/pingcap/test-infra/discussions/129
Detail BR log in /tmp/br.log.2022-07-15T07.13.51Z 
Error: restore log from 434600322529230849(2022-07-15 07:04:21.992 +0000 UTC) to 434600400949870596(2022-07-15 07:09:21.143 +0000 UTC),  but the current existed log from 434600322031419393(2022-07-15 07:04:20.093 +0000 UTC) to 434600397227425834(2022-07-15 07:09:06.943 +0000 UTC): [BR:Common:ErrInvalidArgument]invalid argument
2022-07-15T15:13:51.962+0800    INFO    host/host.go:37 Execute command error   {"command": " /br  restore  point \"--storage\" \"s3://tmp/br-log-backup847ce747-ae23-4c21-a6c5-e81ca2cfa0a5/Log?access-key=minioadmin&secret-access-key=minioadmin&endpoint=http%3a%2f%[2fminio.pingcap.net](http://2fminio.pingcap.net/)%3a9000&force-path-style=true\" \"--pd\" \"http://dst-tidb-pd.fb-pitr-4u-t6djr:2379/\" \"--restored-ts\" \"434600400949870596\" \"--full-backup-storage\" \"s3://tmp/br-log-backup847ce747-ae23-4c21-a6c5-e81ca2cfa0a5/Full?access-key=minioadmin&secret-access-key=minioadmin&endpoint=http%3a%2f%[2fminio.pingcap.net](http://2fminio.pingcap.net/)%3a9000&force-path-style=true\"", "exit code": 1, "stdout": "", "stderr": "Detail BR log in /tmp/br.log.2022-07-15T07.13.51Z \nError: restore log from 434600322529230849(2022-07-15 07:04:21.992 +0000 UTC) to 434600400949870596(2022-07-15 07:09:21.143 +0000 UTC),  but the current existed log from 434600322031419393(2022-07-15 07:04:20.093 +0000 UTC) to 434600397227425834(2022-07-15 07:09:06.943 +0000 UTC): [BR:Common:ErrInvalidArgument]invalid argument\n", "error": "command terminated with exit code 1"}
2022-07-15T15:13:51.962+0800    INFO    host/host.go:41 Execute command finished        {"command": " /br  restore  point \"--storage\" \"s3://tmp/br-log-backup847ce747-ae23-4c21-a6c5-e81ca2cfa0a5/Log?access-key=minioadmin&secret-access-key=minioadmin&endpoint=http%3a%2f%[2fminio.pingcap.net](http://2fminio.pingcap.net/)%3a9000&force-path-style=true\" \"--pd\" \"http://dst-tidb-pd.fb-pitr-4u-t6djr:2379/\" \"--restored-ts\" \"434600400949870596\" \"--full-backup-storage\" \"s3://tmp/br-log-backup847ce747-ae23-4c21-a6c5-e81ca2cfa0a5/Full?access-key=minioadmin&secret-access-key=minioadmin&endpoint=http%3a%2f%[2fminio.pingcap.net](http://2fminio.pingcap.net/)%3a9000&force-path-style=true\"", "execute duration": "472.100135ms"}

4. What is your TiDB version? (Required)

/ # /br -V
Release Version: v6.2.0-alpha
Git Commit Hash: be50ebc
Git Branch: heads/refs/tags/v6.2.0-alpha
Go Version: go1.18.2
UTC Build Time: 2022-07-14 11:02:31
Race Enabled: false