TestAllHistory failed in CI

[fzhedu]

Bug Report

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[2021-11-30T04:23:30.648Z] --- FAIL: TestAllHistory (1.19s)
[2021-11-30T04:23:30.648Z] dbtestkit.go:72:
[2021-11-30T04:23:30.648Z] Error Trace: dbtestkit.go:72
[2021-11-30T04:23:30.648Z] http_handler_test.go:505
[2021-11-30T04:23:30.648Z] http_handler_test.go:965
[2021-11-30T04:23:30.648Z] Error: Received unexpected error:
[2021-11-30T04:23:30.648Z] commands out of sync. Did you run multiple statements at once?
[2021-11-30T04:23:30.648Z] Test: TestAllHistory
[2021-11-30T04:23:30.648Z] Messages: sql:create database tidb;, args:[]
[2021-11-30T04:23:30.648Z] http_handler_test.go:501:
[2021-11-30T04:23:30.648Z] Error Trace: http_handler_test.go:501
[2021-11-30T04:23:30.648Z] panic.go:613
[2021-11-30T04:23:30.648Z] testing.go:741
[2021-11-30T04:23:30.648Z] dbtestkit.go:72
[2021-11-30T04:23:30.648Z] http_handler_test.go:505
[2021-11-30T04:23:30.648Z] http_handler_test.go:965
[2021-11-30T04:23:30.648Z] Error: Received unexpected error:
[2021-11-30T04:23:30.648Z] bad connection
[2021-11-30T04:23:30.648Z] Test: TestAllHistory

https://ci.pingcap.net/blue/rest/organizations/jenkins/pipelines/tidb_ghpr_check_2/runs/49084/nodes/62/steps/73/log/?start=0

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master

[mjonss]

Duplicate of #30249 ?

[xiongjiwei]

it seems the same error message with #30249 , I will assign it to you @tiancaiamao

[hawkingrei]

Closed by #30306. We can re-open it if the error happens again.

[github-actions]

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