This is an automated cherry-pick of pingcap#45680

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>

br/pkg/lightning/backend/local/local.go

@@ -267,15 +267,15 @@ func (*encodingBuilder) MakeEmptyRows() encode.Rows {
 type targetInfoGetter struct {
 	tls      *common.TLS
 	targetDB *sql.DB
-	pdAddr   string
+	pdCli    pd.Client
 }
 
 // NewTargetInfoGetter creates an TargetInfoGetter with local backend implementation.
-func NewTargetInfoGetter(tls *common.TLS, db *sql.DB, pdAddr string) backend.TargetInfoGetter {
+func NewTargetInfoGetter(tls *common.TLS, db *sql.DB, pdCli pd.Client) backend.TargetInfoGetter {
 	return &targetInfoGetter{
 		tls:      tls,
 		targetDB: db,
-		pdAddr:   pdAddr,
+		pdCli:    pdCli,
 	}
 }
 
@@ -296,10 +296,10 @@ func (g *targetInfoGetter) CheckRequirements(ctx context.Context, checkCtx *back
 	if err := checkTiDBVersion(ctx, versionStr, localMinTiDBVersion, localMaxTiDBVersion); err != nil {
 		return err
 	}
-	if err := tikv.CheckPDVersion(ctx, g.tls, g.pdAddr, localMinPDVersion, localMaxPDVersion); err != nil {
+	if err := tikv.CheckPDVersion(ctx, g.tls, g.pdCli.GetLeaderAddr(), localMinPDVersion, localMaxPDVersion); err != nil {
 		return err
 	}
-	if err := tikv.CheckTiKVVersion(ctx, g.tls, g.pdAddr, localMinTiKVVersion, localMaxTiKVVersion); err != nil {
+	if err := tikv.CheckTiKVVersion(ctx, g.tls, g.pdCli.GetLeaderAddr(), localMinTiKVVersion, localMaxTiKVVersion); err != nil {
 		return err
 	}
 
@@ -1690,6 +1690,54 @@ func (local *Backend) LocalWriter(_ context.Context, cfg *backend.LocalWriterCon
 	return openLocalWriter(cfg, engine, local.tikvCodec, local.LocalWriterMemCacheSize, local.bufferPool.NewBuffer())
 }
 
+<<<<<<< HEAD
+=======
+// SwitchModeByKeyRanges will switch tikv mode for regions in the specific key range for multirocksdb.
+// This function will spawn a goroutine to keep switch mode periodically until the context is done.
+// The return done channel is used to notify the caller that the background goroutine is exited.
+func (local *Backend) SwitchModeByKeyRanges(ctx context.Context, ranges []Range) (<-chan struct{}, error) {
+	switcher := NewTiKVModeSwitcher(local.tls, local.pdCtl.GetPDClient(), log.FromContext(ctx).Logger)
+	done := make(chan struct{})
+
+	keyRanges := make([]*sst.Range, 0, len(ranges))
+	for _, r := range ranges {
+		startKey := r.start
+		if len(r.start) > 0 {
+			startKey = codec.EncodeBytes(nil, r.start)
+		}
+		endKey := r.end
+		if len(r.end) > 0 {
+			endKey = codec.EncodeBytes(nil, r.end)
+		}
+		keyRanges = append(keyRanges, &sst.Range{
+			Start: startKey,
+			End:   endKey,
+		})
+	}
+
+	go func() {
+		defer close(done)
+		ticker := time.NewTicker(local.BackendConfig.RaftKV2SwitchModeDuration)
+		defer ticker.Stop()
+		switcher.ToImportMode(ctx, keyRanges...)
+	loop:
+		for {
+			select {
+			case <-ctx.Done():
+				break loop
+			case <-ticker.C:
+				switcher.ToImportMode(ctx, keyRanges...)
+			}
+		}
+		// Use a new context to avoid the context is canceled by the caller.
+		recoverCtx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+		defer cancel()
+		switcher.ToNormalMode(recoverCtx, keyRanges...)
+	}()
+	return done, nil
+}
+
+>>>>>>> 9c213aac21d (lightning: fix pd http request using old address (#45680))
 func openLocalWriter(cfg *backend.LocalWriterConfig, engine *Engine, tikvCodec tikvclient.Codec, cacheSize int64, kvBuffer *membuf.Buffer) (*Writer, error) {
 	w := &Writer{
 		engine:             engine,

br/pkg/lightning/backend/local/tikv_mode.go

@@ -0,0 +1,83 @@
+// Copyright 2023 PingCAP, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package local
+
+import (
+	"context"
+
+	sstpb "github.com/pingcap/kvproto/pkg/import_sstpb"
+	"github.com/pingcap/tidb/br/pkg/lightning/common"
+	"github.com/pingcap/tidb/br/pkg/lightning/tikv"
+	pd "github.com/tikv/pd/client"
+	"go.uber.org/zap"
+)
+
+// TiKVModeSwitcher is used to switch TiKV nodes between Import and Normal mode.
+type TiKVModeSwitcher interface {
+	// ToImportMode switches all TiKV nodes to Import mode.
+	ToImportMode(ctx context.Context, ranges ...*sstpb.Range)
+	// ToNormalMode switches all TiKV nodes to Normal mode.
+	ToNormalMode(ctx context.Context, ranges ...*sstpb.Range)
+}
+
+// TiKVModeSwitcher is used to switch TiKV nodes between Import and Normal mode.
+type switcher struct {
+	tls    *common.TLS
+	pdCli  pd.Client
+	logger *zap.Logger
+}
+
+// NewTiKVModeSwitcher creates a new TiKVModeSwitcher.
+func NewTiKVModeSwitcher(tls *common.TLS, pdCli pd.Client, logger *zap.Logger) TiKVModeSwitcher {
+	return &switcher{
+		tls:    tls,
+		pdCli:  pdCli,
+		logger: logger,
+	}
+}
+
+func (rc *switcher) ToImportMode(ctx context.Context, ranges ...*sstpb.Range) {
+	rc.switchTiKVMode(ctx, sstpb.SwitchMode_Import, ranges...)
+}
+
+func (rc *switcher) ToNormalMode(ctx context.Context, ranges ...*sstpb.Range) {
+	rc.switchTiKVMode(ctx, sstpb.SwitchMode_Normal, ranges...)
+}
+
+func (rc *switcher) switchTiKVMode(ctx context.Context, mode sstpb.SwitchMode, ranges ...*sstpb.Range) {
+	rc.logger.Info("switch tikv mode", zap.Stringer("mode", mode))
+
+	// It is fine if we miss some stores which did not switch to Import mode,
+	// since we're running it periodically, so we exclude disconnected stores.
+	// But it is essentially all stores be switched back to Normal mode to allow
+	// normal operation.
+	var minState tikv.StoreState
+	if mode == sstpb.SwitchMode_Import {
+		minState = tikv.StoreStateOffline
+	} else {
+		minState = tikv.StoreStateDisconnected
+	}
+	tls := rc.tls.WithHost(rc.pdCli.GetLeaderAddr())
+	// we ignore switch mode failure since it is not fatal.
+	// no need log the error, it is done in kv.SwitchMode already.
+	_ = tikv.ForAllStores(
+		ctx,
+		tls,
+		minState,
+		func(c context.Context, store *tikv.Store) error {
+			return tikv.SwitchMode(c, tls, store.Address, mode, ranges...)
+		},
+	)
+}

br/pkg/lightning/importer/BUILD.bazel

@@ -162,6 +162,8 @@ go_test(
         "@com_github_stretchr_testify//require",
         "@com_github_stretchr_testify//suite",
         "@com_github_tikv_client_go_v2//config",
+        "@com_github_tikv_client_go_v2//testutils",
+        "@com_github_tikv_pd_client//:client",
         "@com_github_xitongsys_parquet_go//writer",
         "@com_github_xitongsys_parquet_go_source//buffer",
         "@io_etcd_go_etcd_client_v3//:client",

br/pkg/lightning/importer/checksum_helper.go

@@ -26,7 +26,6 @@ import (
 	"github.com/pingcap/tidb/br/pkg/lightning/metric"
 	"github.com/pingcap/tidb/br/pkg/pdutil"
 	"github.com/pingcap/tidb/kv"
-	pd "github.com/tikv/pd/client"
 	"go.uber.org/zap"
 )
 
@@ -37,21 +36,14 @@ func NewChecksumManager(ctx context.Context, rc *Controller, store kv.Storage) (
 		return nil, nil
 	}
 
-	pdAddr := rc.cfg.TiDB.PdAddr
-	pdVersion, err := pdutil.FetchPDVersion(ctx, rc.tls, pdAddr)
+	pdVersion, err := pdutil.FetchPDVersion(ctx, rc.tls, rc.pdCli.GetLeaderAddr())
 	if err != nil {
 		return nil, errors.Trace(err)
 	}
 
 	// for v4.0.0 or upper, we can use the gc ttl api
 	var manager local.ChecksumManager
 	if pdVersion.Major >= 4 && !rc.cfg.PostRestore.ChecksumViaSQL {
-		tlsOpt := rc.tls.ToPDSecurityOption()
-		pdCli, err := pd.NewClientWithContext(ctx, []string{pdAddr}, tlsOpt)
-		if err != nil {
-			return nil, errors.Trace(err)
-		}
-
 		backoffWeight, err := common.GetBackoffWeightFromDB(ctx, rc.db)
 		// only set backoff weight when it's smaller than default value
 		if err == nil && backoffWeight >= local.DefaultBackoffWeight {
@@ -60,7 +52,17 @@ func NewChecksumManager(ctx context.Context, rc *Controller, store kv.Storage) (
 			log.FromContext(ctx).Info("set tidb_backoff_weight to default", zap.Int("backoff_weight", local.DefaultBackoffWeight))
 			backoffWeight = local.DefaultBackoffWeight
 		}
+<<<<<<< HEAD
 		manager = local.NewTiKVChecksumManager(store.GetClient(), pdCli, uint(rc.cfg.TiDB.DistSQLScanConcurrency), backoffWeight)
+=======
+
+		explicitRequestSourceType, err := common.GetExplicitRequestSourceTypeFromDB(ctx, rc.db)
+		if err != nil {
+			log.FromContext(ctx).Warn("get tidb_request_source_type failed", zap.Error(err), zap.String("tidb_request_source_type", explicitRequestSourceType))
+			return nil, errors.Trace(err)
+		}
+		manager = local.NewTiKVChecksumManager(store.GetClient(), rc.pdCli, uint(rc.cfg.TiDB.DistSQLScanConcurrency), backoffWeight, rc.resourceGroupName, explicitRequestSourceType)
+>>>>>>> 9c213aac21d (lightning: fix pd http request using old address (#45680))
 	} else {
 		manager = local.NewTiDBChecksumExecutor(rc.db)
 	}

br/pkg/lightning/importer/get_pre_info.go

@@ -50,6 +50,7 @@ import (
 	"github.com/pingcap/tidb/types"
 	"github.com/pingcap/tidb/util/dbterror"
 	"github.com/pingcap/tidb/util/mock"
+	pd "github.com/tikv/pd/client"
 	"go.uber.org/zap"
 	"golang.org/x/exp/maps"
 )
@@ -123,12 +124,14 @@ type TargetInfoGetterImpl struct {
 	db      *sql.DB
 	tls     *common.TLS
 	backend backend.TargetInfoGetter
+	pdCli   pd.Client
 }
 
 // NewTargetInfoGetterImpl creates a TargetInfoGetterImpl object.
 func NewTargetInfoGetterImpl(
 	cfg *config.Config,
 	targetDB *sql.DB,
+	pdCli pd.Client,
 ) (*TargetInfoGetterImpl, error) {
 	tls, err := cfg.ToTLS()
 	if err != nil {
@@ -139,7 +142,10 @@ func NewTargetInfoGetterImpl(
 	case config.BackendTiDB:
 		backendTargetInfoGetter = tidb.NewTargetInfoGetter(targetDB)
 	case config.BackendLocal:
-		backendTargetInfoGetter = local.NewTargetInfoGetter(tls, targetDB, cfg.TiDB.PdAddr)
+		if pdCli == nil {
+			return nil, common.ErrUnknown.GenWithStack("pd client is required when using local backend")
+		}
+		backendTargetInfoGetter = local.NewTargetInfoGetter(tls, targetDB, pdCli)
 	default:
 		return nil, common.ErrUnknownBackend.GenWithStackByArgs(cfg.TikvImporter.Backend)
 	}
@@ -148,6 +154,7 @@ func NewTargetInfoGetterImpl(
 		tls:     tls,
 		db:      targetDB,
 		backend: backendTargetInfoGetter,
+		pdCli:   pdCli,
 	}, nil
 }
 
@@ -229,7 +236,7 @@ func (g *TargetInfoGetterImpl) GetTargetSysVariablesForImport(ctx context.Contex
 // It uses the PD interface through TLS to get the information.
 func (g *TargetInfoGetterImpl) GetReplicationConfig(ctx context.Context) (*pdtypes.ReplicationConfig, error) {
 	result := new(pdtypes.ReplicationConfig)
-	if err := g.tls.WithHost(g.cfg.TiDB.PdAddr).GetJSON(ctx, pdReplicate, &result); err != nil {
+	if err := g.tls.WithHost(g.pdCli.GetLeaderAddr()).GetJSON(ctx, pdReplicate, &result); err != nil {
 		return nil, errors.Trace(err)
 	}
 	return result, nil
@@ -240,7 +247,7 @@ func (g *TargetInfoGetterImpl) GetReplicationConfig(ctx context.Context) (*pdtyp
 // It uses the PD interface through TLS to get the information.
 func (g *TargetInfoGetterImpl) GetStorageInfo(ctx context.Context) (*pdtypes.StoresInfo, error) {
 	result := new(pdtypes.StoresInfo)
-	if err := g.tls.WithHost(g.cfg.TiDB.PdAddr).GetJSON(ctx, pdStores, result); err != nil {
+	if err := g.tls.WithHost(g.pdCli.GetLeaderAddr()).GetJSON(ctx, pdStores, result); err != nil {
 		return nil, errors.Trace(err)
 	}
 	return result, nil
@@ -251,7 +258,7 @@ func (g *TargetInfoGetterImpl) GetStorageInfo(ctx context.Context) (*pdtypes.Sto
 // It uses the PD interface through TLS to get the information.
 func (g *TargetInfoGetterImpl) GetEmptyRegionsInfo(ctx context.Context) (*pdtypes.RegionsInfo, error) {
 	result := new(pdtypes.RegionsInfo)
-	if err := g.tls.WithHost(g.cfg.TiDB.PdAddr).GetJSON(ctx, pdEmptyRegions, &result); err != nil {
+	if err := g.tls.WithHost(g.pdCli.GetLeaderAddr()).GetJSON(ctx, pdEmptyRegions, &result); err != nil {
 		return nil, errors.Trace(err)
 	}
 	return result, nil

br/pkg/lightning/importer/get_pre_info_test.go

@@ -757,7 +757,10 @@ func TestGetPreInfoIsTableEmpty(t *testing.T) {
 	require.NoError(t, err)
 	lnConfig := config.NewConfig()
 	lnConfig.TikvImporter.Backend = config.BackendLocal
-	targetGetter, err := NewTargetInfoGetterImpl(lnConfig, db)
+	_, err = NewTargetInfoGetterImpl(lnConfig, db, nil)
+	require.ErrorContains(t, err, "pd client is required when using local backend")
+	lnConfig.TikvImporter.Backend = config.BackendTiDB
+	targetGetter, err := NewTargetInfoGetterImpl(lnConfig, db, nil)
 	require.NoError(t, err)
 	require.Equal(t, lnConfig, targetGetter.cfg)