Have been trying to lock it again for more than 20s

goroutine 2774267 lock 0xc027ada460

pkg/domain/domain.go:594 domain.(*Domain).Reload ??? <<<<<

pkg/domain/domain.go:593 domain.(*Domain).Reload ???

pkg/domain/domain.go:910 domain.(*Domain).loadSchemaInLoop ???

pkg/domain/domain.go:1283 domain.(*Domain).Init.func2 ???

pkg/util/wait_group_wrapper.go:99 util.(*WaitGroupEnhancedWrapper).Run.func1 ???



Here is what goroutine 2774071 doing now

goroutine 2774071 [select]:

github.com/tikv/client-go/v2/config/retry.(*Config).createBackoffFn.newBackoffFn.func2({0x6915c70, 0xc031cd89c0}, 0xffffffffffffffff)

	external/com_github_tikv_client_go_v2/config/retry/config.go:205 +0x505

github.com/tikv/client-go/v2/config/retry.(*Backoffer).BackoffWithCfgAndMaxSleep(0xc031c06bd0, 0xc001009530, 0x18?, {0x68e4e20, 0xc054f95a10})

	external/com_github_tikv_client_go_v2/config/retry/backoff.go:195 +0x66d

github.com/tikv/client-go/v2/config/retry.(*Backoffer).Backoff(0xc031c06bd0, 0xc001009530, {0x68e4e20, 0xc054f95a10})

	external/com_github_tikv_client_go_v2/config/retry/backoff.go:122 +0x251

github.com/tikv/client-go/v2/txnkv/txnsnapshot.(*KVSnapshot).get(0xc0310d5b00, {0x6915c70, 0xc031cd89c0}, 0xc031c06bd0, {0xc0298b5e90, 0x24, 0x29})

	external/com_github_tikv_client_go_v2/txnkv/txnsnapshot/snapshot.go:753 +0xe25

github.com/tikv/client-go/v2/txnkv/txnsnapshot.(*KVSnapshot).Get(0xc0310d5b00, {0x6915d50, 0x9e1fb80}, {0xc0298b5e90, 0x24, 0x29})

	external/com_github_tikv_client_go_v2/txnkv/txnsnapshot/snapshot.go:638 +0x3e5

github.com/pingcap/tidb/pkg/store/driver/txn.(*tikvSnapshot).Get(0xc031bd9440?, {0x6915d50?, 0x9e1fb80?}, {0xc0298b5e90?, 0x30?, 0x5b5dec0?})

	pkg/store/driver/txn/snapshot.go:60 +0x113

github.com/pingcap/tidb/pkg/structure.(*TxStructure).Get(0xc031bd9440, {0x918d600?, 0x30?, 0x5b5dec0?})

	pkg/structure/string.go:37 +0x5e

github.com/pingcap/tidb/pkg/structure.(*TxStructure).GetInt64(0x1?, {0x918d600?, 0xc031bd9440?, 0x918b250?})

	pkg/structure/string.go:46 +0x26

github.com/pingcap/tidb/pkg/meta.(*Meta).GetSchemaVersionWithNonEmptyDiff(0xc031cd8930)

	pkg/meta/meta.go:477 +0x45

github.com/pingcap/tidb/pkg/domain.(*Domain).loadInfoSchema(0xc027ada400, 0x5ef6f64?)

	pkg/domain/domain.go:237 +0x145

github.com/pingcap/tidb/pkg/domain.(*Domain).Reload(0xc027ada400)

	pkg/domain/domain.go:604 +0x1f1

github.com/pingcap/tidb/pkg/ddl.(*DefaultCallback).OnChanged(0xc00b599038, {0x0?, 0x0?})

	pkg/ddl/callback.go:141 +0xe4

github.com/pingcap/tidb/pkg/ddl.(*ddl).callHookOnChanged(0xc05f922120?, 0x69902c0?, {0x0?, 0x0?})

	pkg/ddl/ddl.go:1311 +0xe6

github.com/pingcap/tidb/pkg/ddl.(*ddl).dropIndex(0xc05f922120, {0x69902c0, 0xc00497fb00}, {{{0xc035ba159c, 0x8}, {0xc035ba159c, 0x8}}, {{0xc035ba15a5, 0x2}, {0xc035ba15a5, ...}}}, ...)

	pkg/ddl/ddl_api.go:7989 +0x8ea

github.com/pingcap/tidb/pkg/ddl.(*ddl).AlterTable(0xc05f922120, {0x6915c70, 0xc03689be60}, {0x69902c0, 0xc00497fb00}, 0xc035ba15a5?)

	pkg/ddl/ddl_api.go:3892 +0x11ee

github.com/pingcap/tidb/pkg/executor.(*DDLExec).executeAlterTable(0xc02ef3e900, {0x6915c70, 0xc03689be60}, 0xc02ef3a6c0)

	pkg/executor/ddl.go:388 +0x131

github.com/pingcap/tidb/pkg/executor.(*DDLExec).Next(0xc02ef3e900, {0x6915c70?, 0xc03689bdd0?}, 0x1?)

	pkg/executor/ddl.go:152 +0x2c7

github.com/pingcap/tidb/pkg/executor/internal/exec.Next({0x6915c70, 0xc03689bdd0}, {0x693f000, 0xc02ef3e900}, 0xc02ef22f00)

	pkg/executor/internal/exec/executor.go:404 +0x2fc

github.com/pingcap/tidb/pkg/executor.(*ExecStmt).next(0xc02e15b770, {0x6915c70, 0xc03689bdd0}, {0x693f000, 0xc02ef3e900}, 0x1d6259a?)

	pkg/executor/adapter.go:1198 +0x78

github.com/pingcap/tidb/pkg/executor.(*ExecStmt).handleNoDelayExecutor(0xc02e15b770, {0x6915c70?, 0xc03689bdd0?}, {0x693f000?, 0xc02ef3e900})

	pkg/executor/adapter.go:946 +0x3f3

github.com/pingcap/tidb/pkg/executor.(*ExecStmt).handleNoDelay(0xc02e15b770, {0x6915c70, 0xc03689bdd0}, {0x693f000?, 0xc02ef3e900?}, 0x0)

	pkg/executor/adapter.go:780 +0x2af

github.com/pingcap/tidb/pkg/executor.(*ExecStmt).Exec(0xc02e15b770, {0x6915c70, 0xc03689bdd0})

	pkg/executor/adapter.go:555 +0xf1c

github.com/pingcap/tidb/pkg/session.runStmt({0x6915c70, 0xc03689b9b0}, 0xc00497fb00, {0x6920ad0, 0xc02e15b770?})

	pkg/session/session.go:2373 +0x4a6

github.com/pingcap/tidb/pkg/session.(*session).ExecuteStmt(0xc00497fb00, {0x6915c70?, 0xc03689b9b0?}, {0x692c0b0, 0xc02ef3a6c0?})

	pkg/session/session.go:2242 +0x141c

github.com/pingcap/tidb/pkg/testkit.(*TestKit).ExecWithContext(0xc02b778d20, {0x6915c70, 0xc03689b9b0}, {0xc035ba1590, 0x27}, {0x0, 0x0, 0x0})

	pkg/testkit/testkit.go:365 +0x6d2

github.com/pingcap/tidb/pkg/testkit.(*TestKit).Exec(0x68f2080?, {0xc035ba1590, 0x27}, {0x0, 0x0, 0x0})

	pkg/testkit/testkit.go:338 +0x90

github.com/pingcap/tidb/tests/realtikvtest/addindextestutil.checkResult(0xc02b6a18c0, {0xc03cdebee0, 0xb}, 0x5f8ce29?, 0x0)

	tests/realtikvtest/addindextestutil/common.go:335 +0x685

github.com/pingcap/tidb/tests/realtikvtest/addindextestutil.TestOneColFrame(0xc02b6a18c0, {0xc008151f18, 0x3, 0x8251348?}, 0x6102bf8)

	tests/realtikvtest/addindextestutil/common.go:393 +0x5d0

tests/realtikvtest/addindextest/addindextest_test.TestPiTRCreateNonUniqueIndex(0xc00f498c00?)

	tests/realtikvtest/addindextest/pitr_test.go:31 +0x149

testing.tRunner(0xc019613040, 0x6102a10)

	GOROOT/src/testing/testing.go:1595 +0xff

created by testing.(*T).Run in goroutine 1

	GOROOT/src/testing/testing.go:1648 +0x3ad