data race detected

[XuHuaiyu]

[2020-07-14T02:16:00.902Z] ==================

[2020-07-14T02:16:00.902Z] WARNING: DATA RACE

[2020-07-14T02:16:00.903Z] Write at 0x00c0002ec308 by goroutine 60:

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/executor.ResetContextOfStmt()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/executor/executor.go:1666 +0xe1d

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.(*session).ExecuteStmt()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:1140 +0x1f1

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.(*session).Execute()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:1081 +0x3ee

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.execRestrictedSQL()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:835 +0x15c

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.(*session).ExecRestrictedSQLWithContext()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:774 +0x25b

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.(*session).ExecRestrictedSQL()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:744 +0x92

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/statistics/handle.(*Handle).Update()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/statistics/handle/handle.go:162 +0x1eb

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/domain.(*Domain).loadStatsWorker()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/domain/domain.go:1096 +0x571

[2020-07-14T02:16:00.903Z] 

[2020-07-14T02:16:00.903Z] Previous read at 0x00c0002ec308 by goroutine 139:

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/executor.(*IndexLookUpExecutor).startIndexWorker.func1()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/executor/distsql.go:514 +0x477

[2020-07-14T02:16:00.903Z] 

[2020-07-14T02:16:00.903Z] Goroutine 60 (running) created at:

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/domain.(*Domain).UpdateTableStatsLoop()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/domain/domain.go:1041 +0x332

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.BootstrapSession()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:1822 +0x4f3

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1181 +0x3d9

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1179 +0x3ac

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1177 +0x37f

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1175 +0x352

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1173 +0x325

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1171 +0x2f8

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1169 +0x2cb

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1167 +0x29e

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1165 +0x271

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1163 +0x244

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1161 +0x217

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.903Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1159 +0x1ea

[2020-07-14T02:16:00.903Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1157 +0x1bd

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1156 +0x190

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1155 +0x163

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1154 +0x136

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1152 +0x109

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1150 +0xdc

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.doDDLWorks()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:1148 +0x5b

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.bootstrap()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/bootstrap.go:310 +0x1a1

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.runInBootstrapSession()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:1853 +0xe2

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/session.BootstrapSession()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/session/session.go:1747 +0xb69

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/planner/cascades_test.newStoreWithBootstrap()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/planner/cascades/integration_test.go:40 +0xac

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/planner/cascades_test.(*testIntegrationSuite).SetUpSuite()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/planner/cascades/integration_test.go:46 +0x44

[2020-07-14T02:16:00.904Z]   runtime.call32()

[2020-07-14T02:16:00.904Z]       /usr/local/go/src/runtime/asm_amd64.s:539 +0x3a

[2020-07-14T02:16:00.904Z]   reflect.Value.Call()

[2020-07-14T02:16:00.904Z]       /usr/local/go/src/reflect/value.go:321 +0xd3

[2020-07-14T02:16:00.904Z]   github.com/pingcap/check.(*suiteRunner).runFixture.func1()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/pkg/mod/github.com/pingcap/check@v0.0.0-20200212061837-5e12011dc712/check.go:799 +0x195

[2020-07-14T02:16:00.904Z]   github.com/pingcap/check.(*suiteRunner).forkCall.func1()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/pkg/mod/github.com/pingcap/check@v0.0.0-20200212061837-5e12011dc712/check.go:739 +0x113

[2020-07-14T02:16:00.904Z] 

[2020-07-14T02:16:00.904Z] Goroutine 139 (finished) created at:

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/executor.(*IndexLookUpExecutor).startIndexWorker()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/executor/distsql.go:501 +0xbc8

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/executor.(*IndexLookUpExecutor).startWorkers()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/executor/distsql.go:429 +0xcb

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/executor.(*IndexLookUpExecutor).Next()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/executor/distsql.go:598 +0x421

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/executor.Next()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/executor/executor.go:267 +0x16a

[2020-07-14T02:16:00.904Z]   github.com/pingcap/tidb/executor.(*projectionInputFetcher).run()

[2020-07-14T02:16:00.904Z]       /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/executor/projection.go:369 +0x41c

[2020-07-14T02:16:00.904Z] ==================

[2020-07-14T02:16:00.904Z] Found 1 data race(s)

[2020-07-14T02:16:00.904Z] FAIL	github.com/pingcap/tidb/planner/cascades	6.588s

[crazycs520]

Is anyone investigating this?

[zimulala]

https://internal.pingcap.net/idc-jenkins/blue/organizations/jenkins/tidb_ghpr_unit_test/detail/tidb_ghpr_unit_test/42679/pipeline/

[crazycs520]

I am investigating this UT now.

[crazycs520]

#18541 This PR should avoid this race to make ci stable, but the root cause of the race has not been located...

[tiancaiamao]

This issue has been there for quite a long time.
After #30822, I guess it's solved.
Close for now, if it still reproduce, feel free to reopen.