flaky test: runTestInfoschemaClientErrors #23977
Description
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
[2021-04-12T12:38:28.631Z] ----------------------------------------------------------------------
[2021-04-12T12:38:28.631Z] FAIL: tidb_test.go:1006: tidbTestSuite.TestClientErrors
[2021-04-12T12:38:28.631Z]
[2021-04-12T12:38:28.631Z] tidb_test.go:1007:
[2021-04-12T12:38:28.631Z] ts.runTestInfoschemaClientErrors(c)
[2021-04-12T12:38:28.632Z] server_test.go:2084:
[2021-04-12T12:38:28.632Z] dbt.Check(newWarnings, Equals, warnings)
[2021-04-12T12:38:28.632Z] ... obtained int = 1
[2021-04-12T12:38:28.632Z] ... expected int = 2
[2021-04-12T12:38:28.632Z]
2. What did you expect to see? (Required)
It should pass.
3. What did you see instead (Required)
Flakiness observed (~2 fails/day)