Jinhao Hu

```bash 2024-03-01T07:36:28.4316031Z keyspace_group_manager_test.go:665: 2024-03-01T07:36:28.4316662Z Error Trace: /home/runner/work/pd/pd/tests/integrations/mcs/tso/keyspace_group_manager_test.go:665 2024-03-01T07:36:28.4317524Z /home/runner/work/pd/pd/tests/integrations/mcs/tso/keyspace_group_manager_test.go:804 2024-03-01T07:36:28.4320113Z Error: []uint32{0x0, 0x1, 0x2, 0x3, 0x5, 0x6, 0x7, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0x10, 0x12, 0x14, 0x15, 0x16, 0x18,...

https://github.com/tikv/pd/actions/runs/8703020304/job/23868321394?pr=8074 meet again

https://github.com/tikv/pd/actions/runs/9187340407/job/25264823384 meet again ```bash 2024-05-22T07:49:50.6611342Z --- FAIL: TestTSOKeyspaceGroupManager (56.26s) 2024-05-22T07:49:50.6611800Z --- FAIL: TestTSOKeyspaceGroupManager/TestKeyspaceGroupMergeIntoDefault (25.30s) 2024-05-22T07:49:50.6612031Z keyspace_group_manager_test.go:686: 2024-05-22T07:49:50.6612773Z Error Trace: /home/runner/work/pd/pd/tests/integrations/mcs/tso/keyspace_group_manager_test.go:686 2024-05-22T07:49:50.6613746Z /home/runner/work/pd/pd/tests/integrations/mcs/tso/keyspace_group_manager_test.go:828 2024-05-22T07:49:50.6616947Z Error: []uint32{0x0, 0x2f, 0x30, 0x31, 0x32, 0x33,...

meet again https://do.pingcap.net/jenkins/blue/organizations/jenkins/tikv%2Fpd%2Fpull_integration_realcluster_test/detail/pull_integration_realcluster_test/250/pipeline ```bash === RUN TestRegionLabelDenyScheduler [2024/07/05 16:06:36.782 +08:00] [INFO] [pd_service_discovery.go:1018] ["[pd] switch leader"] [new-leader=http://127.0.0.1:2382] [old-leader=http://127.0.0.1:2384] testutil.go:56: Error Trace: /home/jenkins/agent/workspace/tikv/pd/pull_integration_realcluster_test/pd/client/testutil/testutil.go:56 /home/jenkins/agent/workspace/tikv/pd/pull_integration_realcluster_test/pd/tests/integrations/realcluster/scheduler_test.go:105 Error: Condition never satisfied Test: TestRegionLabelDenyScheduler ```

meet again https://do.pingcap.net/jenkins/blue/organizations/jenkins/tikv%2Fpd%2Fpull_integration_realcluster_test/detail/pull_integration_realcluster_test/467/ ```bash --- PASS: TestReloadLabel (63.86s) === RUN TestTransferLeader --- PASS: TestTransferLeader (3.07s) === RUN TestRegionLabelDenyScheduler testutil.go:56: Error Trace: /home/jenkins/agent/workspace/tikv/pd/pull_integration_realcluster_test/pd/client/testutil/testutil.go:56 /home/jenkins/agent/workspace/tikv/pd/pull_integration_realcluster_test/pd/tests/integrations/realcluster/scheduler_test.go:178 Error: Condition never satisfied Test: TestRegionLabelDenyScheduler ```

/lgtm

/test

@AmoebaProtozoa Hi, can you help to provide an answer to this question? :)