==================
WARNING: DATA RACE
Write at 0x00c01d78bb30 by goroutine 58814:
  runtime.mapassign()
      GOROOT/src/runtime/map.go:578 +0x0
  github.com/pingcap/tidb/util/topsql/stmtstats.StatementStatsMap.Merge()
      util/topsql/stmtstats/stmtstats.go:162 +0x3a9
  github.com/pingcap/tidb/server.setupForTestTopSQLStatementStats.func1()
      server/tidb_test.go:2033 +0xa4
  github.com/pingcap/tidb/server.(*mockCollector).CollectStmtStatsMap()
      server/tidb_test.go:1729 +0x45
  github.com/pingcap/tidb/util/topsql/stmtstats.(*aggregator).aggregate.func2()
      util/topsql/stmtstats/aggregator.go:91 +0x56
  sync.(*Map).Range()
      GOROOT/src/sync/map.go:476 +0x1db
  github.com/pingcap/tidb/util/topsql/stmtstats.(*aggregator).aggregate()
      util/topsql/stmtstats/aggregator.go:90 +0xde
  github.com/pingcap/tidb/util/topsql/stmtstats.(*aggregator).run()
      util/topsql/stmtstats/aggregator.go:71 +0xd1
  github.com/pingcap/tidb/util/topsql/stmtstats.(*aggregator).start.func1()
      util/topsql/stmtstats/aggregator.go:56 +0x39
Previous read at 0x00c01d78bb30 by goroutine 58813:
  runtime.mapiternext()
      GOROOT/src/runtime/map.go:866 +0x0
  github.com/pingcap/tidb/server.TestTopSQLStatementStats3()
      server/tidb_test.go:2261 +0x67d
  github.com/pingcap/failpoint.(*Failpoint).Enable()
      external/com_github_pingcap_failpoint/failpoint.go:54 +0x44
  github.com/pingcap/failpoint.(*Failpoints).Enable()
      external/com_github_pingcap_failpoint/failpoints.go:105 +0x276
  github.com/pingcap/failpoint.Enable()
      external/com_github_pingcap_failpoint/failpoints.go:222 +0x8f
  github.com/pingcap/tidb/server.TestTopSQLStatementStats3()
      server/tidb_test.go:2224 +0x6b
  github.com/pingcap/failpoint.parse()
      external/com_github_pingcap_failpoint/terms.go:126 +0xad
  github.com/pingcap/failpoint.newTerms()
      external/com_github_pingcap_failpoint/terms.go:98 +0x50
  github.com/pingcap/failpoint.(*Failpoint).Enable()
      external/com_github_pingcap_failpoint/failpoint.go:54 +0x44
  github.com/pingcap/failpoint.(*Failpoints).Enable()
      external/com_github_pingcap_failpoint/failpoints.go:105 +0x276
  github.com/pingcap/failpoint.Enable()
      external/com_github_pingcap_failpoint/failpoints.go:222 +0x468
  github.com/pingcap/tidb/server.setupForTestTopSQLStatementStats()
      server/tidb_test.go:2051 +0x469
  github.com/pingcap/failpoint.parseTerm()
      external/com_github_pingcap_failpoint/terms.go:149 +0x389
  github.com/pingcap/failpoint.parse()
      external/com_github_pingcap_failpoint/terms.go:126 +0xad
  github.com/pingcap/failpoint.newTerms()
      external/com_github_pingcap_failpoint/terms.go:98 +0x50
  github.com/pingcap/failpoint.(*Failpoint).Enable()
      external/com_github_pingcap_failpoint/failpoint.go:54 +0x44
  github.com/pingcap/failpoint.(*Failpoints).Enable()
      external/com_github_pingcap_failpoint/failpoints.go:105 +0x276
  github.com/pingcap/failpoint.Enable()
      external/com_github_pingcap_failpoint/failpoints.go:222 +0x41e
  github.com/pingcap/tidb/server.setupForTestTopSQLStatementStats()
      server/tidb_test.go:2050 +0x41f
  github.com/pingcap/tidb/domain.(*Domain).rebuildSysVarCache()
      domain/sysvar_cache.go:146 +0x8c4
  github.com/pingcap/tidb/domain.(*Domain).LoadSysVarCacheLoop()
      domain/domain.go:1581 +0xa8
  github.com/pingcap/tidb/session.BootstrapSession()
      session/session.go:3325 +0x6d3
  github.com/pingcap/tidb/domain.(*Domain).GetSessionCache()
      domain/sysvar_cache.go:62 +0x5c
  github.com/pingcap/tidb/session.(*session).loadCommonGlobalVariablesIfNeeded()
      session/session.go:3672 +0x104
  github.com/pingcap/tidb/session.(*session).ExecuteStmt()
      session/session.go:2103 +0x145
  github.com/pingcap/tidb/session.(*session).ExecuteInternal()
      session/session.go:1638 +0x31b
  github.com/pingcap/tidb/domain.(*Domain).LoadPrivilegeLoop()
      domain/domain.go:1525 +0x130
  github.com/pingcap/tidb/session.BootstrapSession()
      session/session.go:3318 +0x684
  github.com/pingcap/tidb/server.createTidbTestSuiteWithCfg()
      server/tidb_test.go:102 +0x1b6
  github.com/pingcap/tidb/server.createTidbTestSuite()
      server/tidb_test.go:91 +0x21a
  github.com/pingcap/tidb/server.setupForTestTopSQLStatementStats()
      server/tidb_test.go:2041 +0x2a4
  github.com/pingcap/tidb/server.TestTopSQLStatementStats3()
      server/tidb_test.go:2222 +0x4a
  testing.tRunner()
      GOROOT/src/testing/testing.go:1576 +0x216
  testing.(*T).Run.func1()
      GOROOT/src/testing/testing.go:1629 +0x47
Goroutine 58814 (running) created at:
  github.com/pingcap/tidb/util/topsql/stmtstats.(*aggregator).start()
      util/topsql/stmtstats/aggregator.go:56 +0x19a
  github.com/pingcap/tidb/util/topsql/stmtstats.SetupAggregator()
      util/topsql/stmtstats/aggregator.go:146 +0x86
  github.com/pingcap/tidb/server.setupForTestTopSQLStatementStats()
      server/tidb_test.go:2024 +0x6e
  github.com/pingcap/tidb/server.TestTopSQLStatementStats3()
      server/tidb_test.go:2222 +0x4a
  testing.tRunner()
      GOROOT/src/testing/testing.go:1576 +0x216
  testing.(*T).Run.func1()
      GOROOT/src/testing/testing.go:1629 +0x47
Goroutine 58813 (running) created at:
  testing.(*T).Run()
      GOROOT/src/testing/testing.go:1629 +0x805
  testing.runTests.func1()
      GOROOT/src/testing/testing.go:2036 +0x8d
  testing.tRunner()
      GOROOT/src/testing/testing.go:1576 +0x216
  testing.runTests()
      GOROOT/src/testing/testing.go:2034 +0x87c
  testing.(*M).Run()
      GOROOT/src/testing/testing.go:1906 +0xb44
  go.uber.org/goleak.VerifyTestMain()
      external/org_uber_go_goleak/testmain.go:53 +0x70
  github.com/pingcap/tidb/server.TestMain()
      server/main_test.go:74 +0xe76
  main.main()
      bazel-out/k8-fastbuild/bin/server/server_test_/testmain.go:410 +0x5e8
==================