diff --git a/pkg/pdpb/pdpb.pb.go b/pkg/pdpb/pdpb.pb.go
index 998e9159c..d3962e9b1 100644
--- a/pkg/pdpb/pdpb.pb.go
+++ b/pkg/pdpb/pdpb.pb.go
@@ -2037,6 +2037,8 @@ func (m *GetRegionByIDRequest) GetNeedBuckets() bool {
 	return false
 }
 
+// Use GetRegionResponse as the response of GetRegionByIDRequest.
+// Deprecated: use BatchScanRegionsRequest instead.
 type ScanRegionsRequest struct {
 	Header               *RequestHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
 	StartKey             []byte         `protobuf:"bytes,2,opt,name=start_key,json=startKey,proto3" json:"start_key,omitempty"`
@@ -2115,10 +2117,12 @@ type Region struct {
 	DownPeers []*PeerStats `protobuf:"bytes,3,rep,name=down_peers,json=downPeers,proto3" json:"down_peers,omitempty"`
 	// Pending peers are the peers that the leader can't consider as
 	// working followers.
-	PendingPeers         []*metapb.Peer `protobuf:"bytes,4,rep,name=pending_peers,json=pendingPeers,proto3" json:"pending_peers,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
-	XXX_unrecognized     []byte         `json:"-"`
-	XXX_sizecache        int32          `json:"-"`
+	PendingPeers []*metapb.Peer `protobuf:"bytes,4,rep,name=pending_peers,json=pendingPeers,proto3" json:"pending_peers,omitempty"`
+	// buckets isn't nil only when need_buckets is true.
+	Buckets              *metapb.Buckets `protobuf:"bytes,5,opt,name=buckets,proto3" json:"buckets,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
+	XXX_unrecognized     []byte          `json:"-"`
+	XXX_sizecache        int32           `json:"-"`
 }
 
 func (m *Region) Reset()         { *m = Region{} }
@@ -2182,6 +2186,13 @@ func (m *Region) GetPendingPeers() []*metapb.Peer {
 	return nil
 }
 
+func (m *Region) GetBuckets() *metapb.Buckets {
+	if m != nil {
+		return m.Buckets
+	}
+	return nil
+}
+
 type ScanRegionsResponse struct {
 	Header *ResponseHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
 	// Keep for backword compatibability.
@@ -2255,6 +2266,188 @@ func (m *ScanRegionsResponse) GetRegions() []*Region {
 	return nil
 }
 
+type KeyRange struct {
+	StartKey             []byte   `protobuf:"bytes,1,opt,name=start_key,json=startKey,proto3" json:"start_key,omitempty"`
+	EndKey               []byte   `protobuf:"bytes,2,opt,name=end_key,json=endKey,proto3" json:"end_key,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *KeyRange) Reset()         { *m = KeyRange{} }
+func (m *KeyRange) String() string { return proto.CompactTextString(m) }
+func (*KeyRange) ProtoMessage()    {}
+func (*KeyRange) Descriptor() ([]byte, []int) {
+	return fileDescriptor_78b27e6f04f44c6e, []int{33}
+}
+func (m *KeyRange) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *KeyRange) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_KeyRange.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *KeyRange) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_KeyRange.Merge(m, src)
+}
+func (m *KeyRange) XXX_Size() int {
+	return m.Size()
+}
+func (m *KeyRange) XXX_DiscardUnknown() {
+	xxx_messageInfo_KeyRange.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_KeyRange proto.InternalMessageInfo
+
+func (m *KeyRange) GetStartKey() []byte {
+	if m != nil {
+		return m.StartKey
+	}
+	return nil
+}
+
+func (m *KeyRange) GetEndKey() []byte {
+	if m != nil {
+		return m.EndKey
+	}
+	return nil
+}
+
+type BatchScanRegionsRequest struct {
+	Header               *RequestHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
+	NeedBuckets          bool           `protobuf:"varint,2,opt,name=need_buckets,json=needBuckets,proto3" json:"need_buckets,omitempty"`
+	Ranges               []*KeyRange    `protobuf:"bytes,3,rep,name=ranges,proto3" json:"ranges,omitempty"`
+	Limit                int32          `protobuf:"varint,4,opt,name=limit,proto3" json:"limit,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
+	XXX_unrecognized     []byte         `json:"-"`
+	XXX_sizecache        int32          `json:"-"`
+}
+
+func (m *BatchScanRegionsRequest) Reset()         { *m = BatchScanRegionsRequest{} }
+func (m *BatchScanRegionsRequest) String() string { return proto.CompactTextString(m) }
+func (*BatchScanRegionsRequest) ProtoMessage()    {}
+func (*BatchScanRegionsRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_78b27e6f04f44c6e, []int{34}
+}
+func (m *BatchScanRegionsRequest) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *BatchScanRegionsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_BatchScanRegionsRequest.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *BatchScanRegionsRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_BatchScanRegionsRequest.Merge(m, src)
+}
+func (m *BatchScanRegionsRequest) XXX_Size() int {
+	return m.Size()
+}
+func (m *BatchScanRegionsRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_BatchScanRegionsRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_BatchScanRegionsRequest proto.InternalMessageInfo
+
+func (m *BatchScanRegionsRequest) GetHeader() *RequestHeader {
+	if m != nil {
+		return m.Header
+	}
+	return nil
+}
+
+func (m *BatchScanRegionsRequest) GetNeedBuckets() bool {
+	if m != nil {
+		return m.NeedBuckets
+	}
+	return false
+}
+
+func (m *BatchScanRegionsRequest) GetRanges() []*KeyRange {
+	if m != nil {
+		return m.Ranges
+	}
+	return nil
+}
+
+func (m *BatchScanRegionsRequest) GetLimit() int32 {
+	if m != nil {
+		return m.Limit
+	}
+	return 0
+}
+
+type BatchScanRegionsResponse struct {
+	Header *ResponseHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
+	// the returned regions are flattened into a list, because the given ranges can located in the same range, we do not return duplicated regions then.
+	Regions              []*Region `protobuf:"bytes,2,rep,name=regions,proto3" json:"regions,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
+	XXX_unrecognized     []byte    `json:"-"`
+	XXX_sizecache        int32     `json:"-"`
+}
+
+func (m *BatchScanRegionsResponse) Reset()         { *m = BatchScanRegionsResponse{} }
+func (m *BatchScanRegionsResponse) String() string { return proto.CompactTextString(m) }
+func (*BatchScanRegionsResponse) ProtoMessage()    {}
+func (*BatchScanRegionsResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_78b27e6f04f44c6e, []int{35}
+}
+func (m *BatchScanRegionsResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *BatchScanRegionsResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_BatchScanRegionsResponse.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *BatchScanRegionsResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_BatchScanRegionsResponse.Merge(m, src)
+}
+func (m *BatchScanRegionsResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *BatchScanRegionsResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_BatchScanRegionsResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_BatchScanRegionsResponse proto.InternalMessageInfo
+
+func (m *BatchScanRegionsResponse) GetHeader() *ResponseHeader {
+	if m != nil {
+		return m.Header
+	}
+	return nil
+}
+
+func (m *BatchScanRegionsResponse) GetRegions() []*Region {
+	if m != nil {
+		return m.Regions
+	}
+	return nil
+}
+
 type GetClusterConfigRequest struct {
 	Header               *RequestHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
@@ -2266,7 +2459,7 @@ func (m *GetClusterConfigRequest) Reset()         { *m = GetClusterConfigRequest
 func (m *GetClusterConfigRequest) String() string { return proto.CompactTextString(m) }
 func (*GetClusterConfigRequest) ProtoMessage()    {}
 func (*GetClusterConfigRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{33}
+	return fileDescriptor_78b27e6f04f44c6e, []int{36}
 }
 func (m *GetClusterConfigRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2314,7 +2507,7 @@ func (m *GetClusterConfigResponse) Reset()         { *m = GetClusterConfigRespon
 func (m *GetClusterConfigResponse) String() string { return proto.CompactTextString(m) }
 func (*GetClusterConfigResponse) ProtoMessage()    {}
 func (*GetClusterConfigResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{34}
+	return fileDescriptor_78b27e6f04f44c6e, []int{37}
 }
 func (m *GetClusterConfigResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2369,7 +2562,7 @@ func (m *PutClusterConfigRequest) Reset()         { *m = PutClusterConfigRequest
 func (m *PutClusterConfigRequest) String() string { return proto.CompactTextString(m) }
 func (*PutClusterConfigRequest) ProtoMessage()    {}
 func (*PutClusterConfigRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{35}
+	return fileDescriptor_78b27e6f04f44c6e, []int{38}
 }
 func (m *PutClusterConfigRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2423,7 +2616,7 @@ func (m *PutClusterConfigResponse) Reset()         { *m = PutClusterConfigRespon
 func (m *PutClusterConfigResponse) String() string { return proto.CompactTextString(m) }
 func (*PutClusterConfigResponse) ProtoMessage()    {}
 func (*PutClusterConfigResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{36}
+	return fileDescriptor_78b27e6f04f44c6e, []int{39}
 }
 func (m *PutClusterConfigResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2480,7 +2673,7 @@ func (m *Member) Reset()         { *m = Member{} }
 func (m *Member) String() string { return proto.CompactTextString(m) }
 func (*Member) ProtoMessage()    {}
 func (*Member) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{37}
+	return fileDescriptor_78b27e6f04f44c6e, []int{40}
 }
 func (m *Member) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2583,7 +2776,7 @@ func (m *GetMembersRequest) Reset()         { *m = GetMembersRequest{} }
 func (m *GetMembersRequest) String() string { return proto.CompactTextString(m) }
 func (*GetMembersRequest) ProtoMessage()    {}
 func (*GetMembersRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{38}
+	return fileDescriptor_78b27e6f04f44c6e, []int{41}
 }
 func (m *GetMembersRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2634,7 +2827,7 @@ func (m *GetMembersResponse) Reset()         { *m = GetMembersResponse{} }
 func (m *GetMembersResponse) String() string { return proto.CompactTextString(m) }
 func (*GetMembersResponse) ProtoMessage()    {}
 func (*GetMembersResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{39}
+	return fileDescriptor_78b27e6f04f44c6e, []int{42}
 }
 func (m *GetMembersResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2709,7 +2902,7 @@ func (m *GetClusterInfoRequest) Reset()         { *m = GetClusterInfoRequest{} }
 func (m *GetClusterInfoRequest) String() string { return proto.CompactTextString(m) }
 func (*GetClusterInfoRequest) ProtoMessage()    {}
 func (*GetClusterInfoRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{40}
+	return fileDescriptor_78b27e6f04f44c6e, []int{43}
 }
 func (m *GetClusterInfoRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2760,7 +2953,7 @@ func (m *GetClusterInfoResponse) Reset()         { *m = GetClusterInfoResponse{}
 func (m *GetClusterInfoResponse) String() string { return proto.CompactTextString(m) }
 func (*GetClusterInfoResponse) ProtoMessage()    {}
 func (*GetClusterInfoResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{41}
+	return fileDescriptor_78b27e6f04f44c6e, []int{44}
 }
 func (m *GetClusterInfoResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2822,7 +3015,7 @@ func (m *PeerStats) Reset()         { *m = PeerStats{} }
 func (m *PeerStats) String() string { return proto.CompactTextString(m) }
 func (*PeerStats) ProtoMessage()    {}
 func (*PeerStats) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{42}
+	return fileDescriptor_78b27e6f04f44c6e, []int{45}
 }
 func (m *PeerStats) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2907,7 +3100,7 @@ func (m *RegionHeartbeatRequest) Reset()         { *m = RegionHeartbeatRequest{}
 func (m *RegionHeartbeatRequest) String() string { return proto.CompactTextString(m) }
 func (*RegionHeartbeatRequest) ProtoMessage()    {}
 func (*RegionHeartbeatRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{43}
+	return fileDescriptor_78b27e6f04f44c6e, []int{46}
 }
 func (m *RegionHeartbeatRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3067,7 +3260,7 @@ func (m *ChangePeer) Reset()         { *m = ChangePeer{} }
 func (m *ChangePeer) String() string { return proto.CompactTextString(m) }
 func (*ChangePeer) ProtoMessage()    {}
 func (*ChangePeer) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{44}
+	return fileDescriptor_78b27e6f04f44c6e, []int{47}
 }
 func (m *ChangePeer) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3122,7 +3315,7 @@ func (m *ChangePeerV2) Reset()         { *m = ChangePeerV2{} }
 func (m *ChangePeerV2) String() string { return proto.CompactTextString(m) }
 func (*ChangePeerV2) ProtoMessage()    {}
 func (*ChangePeerV2) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{45}
+	return fileDescriptor_78b27e6f04f44c6e, []int{48}
 }
 func (m *ChangePeerV2) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3170,7 +3363,7 @@ func (m *TransferLeader) Reset()         { *m = TransferLeader{} }
 func (m *TransferLeader) String() string { return proto.CompactTextString(m) }
 func (*TransferLeader) ProtoMessage()    {}
 func (*TransferLeader) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{46}
+	return fileDescriptor_78b27e6f04f44c6e, []int{49}
 }
 func (m *TransferLeader) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3224,7 +3417,7 @@ func (m *Merge) Reset()         { *m = Merge{} }
 func (m *Merge) String() string { return proto.CompactTextString(m) }
 func (*Merge) ProtoMessage()    {}
 func (*Merge) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{47}
+	return fileDescriptor_78b27e6f04f44c6e, []int{50}
 }
 func (m *Merge) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3272,7 +3465,7 @@ func (m *SplitRegion) Reset()         { *m = SplitRegion{} }
 func (m *SplitRegion) String() string { return proto.CompactTextString(m) }
 func (*SplitRegion) ProtoMessage()    {}
 func (*SplitRegion) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{48}
+	return fileDescriptor_78b27e6f04f44c6e, []int{51}
 }
 func (m *SplitRegion) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3327,7 +3520,7 @@ func (m *SwitchWitness) Reset()         { *m = SwitchWitness{} }
 func (m *SwitchWitness) String() string { return proto.CompactTextString(m) }
 func (*SwitchWitness) ProtoMessage()    {}
 func (*SwitchWitness) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{49}
+	return fileDescriptor_78b27e6f04f44c6e, []int{52}
 }
 func (m *SwitchWitness) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3381,7 +3574,7 @@ func (m *BatchSwitchWitness) Reset()         { *m = BatchSwitchWitness{} }
 func (m *BatchSwitchWitness) String() string { return proto.CompactTextString(m) }
 func (*BatchSwitchWitness) ProtoMessage()    {}
 func (*BatchSwitchWitness) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{50}
+	return fileDescriptor_78b27e6f04f44c6e, []int{53}
 }
 func (m *BatchSwitchWitness) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3461,7 +3654,7 @@ func (m *RegionHeartbeatResponse) Reset()         { *m = RegionHeartbeatResponse
 func (m *RegionHeartbeatResponse) String() string { return proto.CompactTextString(m) }
 func (*RegionHeartbeatResponse) ProtoMessage()    {}
 func (*RegionHeartbeatResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{51}
+	return fileDescriptor_78b27e6f04f44c6e, []int{54}
 }
 func (m *RegionHeartbeatResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3572,7 +3765,7 @@ func (m *AskSplitRequest) Reset()         { *m = AskSplitRequest{} }
 func (m *AskSplitRequest) String() string { return proto.CompactTextString(m) }
 func (*AskSplitRequest) ProtoMessage()    {}
 func (*AskSplitRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{52}
+	return fileDescriptor_78b27e6f04f44c6e, []int{55}
 }
 func (m *AskSplitRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3632,7 +3825,7 @@ func (m *AskSplitResponse) Reset()         { *m = AskSplitResponse{} }
 func (m *AskSplitResponse) String() string { return proto.CompactTextString(m) }
 func (*AskSplitResponse) ProtoMessage()    {}
 func (*AskSplitResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{53}
+	return fileDescriptor_78b27e6f04f44c6e, []int{56}
 }
 func (m *AskSplitResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3695,7 +3888,7 @@ func (m *ReportSplitRequest) Reset()         { *m = ReportSplitRequest{} }
 func (m *ReportSplitRequest) String() string { return proto.CompactTextString(m) }
 func (*ReportSplitRequest) ProtoMessage()    {}
 func (*ReportSplitRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{54}
+	return fileDescriptor_78b27e6f04f44c6e, []int{57}
 }
 func (m *ReportSplitRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3756,7 +3949,7 @@ func (m *ReportSplitResponse) Reset()         { *m = ReportSplitResponse{} }
 func (m *ReportSplitResponse) String() string { return proto.CompactTextString(m) }
 func (*ReportSplitResponse) ProtoMessage()    {}
 func (*ReportSplitResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{55}
+	return fileDescriptor_78b27e6f04f44c6e, []int{58}
 }
 func (m *ReportSplitResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3805,7 +3998,7 @@ func (m *AskBatchSplitRequest) Reset()         { *m = AskBatchSplitRequest{} }
 func (m *AskBatchSplitRequest) String() string { return proto.CompactTextString(m) }
 func (*AskBatchSplitRequest) ProtoMessage()    {}
 func (*AskBatchSplitRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{56}
+	return fileDescriptor_78b27e6f04f44c6e, []int{59}
 }
 func (m *AskBatchSplitRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3867,7 +4060,7 @@ func (m *SplitID) Reset()         { *m = SplitID{} }
 func (m *SplitID) String() string { return proto.CompactTextString(m) }
 func (*SplitID) ProtoMessage()    {}
 func (*SplitID) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{57}
+	return fileDescriptor_78b27e6f04f44c6e, []int{60}
 }
 func (m *SplitID) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3922,7 +4115,7 @@ func (m *AskBatchSplitResponse) Reset()         { *m = AskBatchSplitResponse{} }
 func (m *AskBatchSplitResponse) String() string { return proto.CompactTextString(m) }
 func (*AskBatchSplitResponse) ProtoMessage()    {}
 func (*AskBatchSplitResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{58}
+	return fileDescriptor_78b27e6f04f44c6e, []int{61}
 }
 func (m *AskBatchSplitResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3977,7 +4170,7 @@ func (m *ReportBatchSplitRequest) Reset()         { *m = ReportBatchSplitRequest
 func (m *ReportBatchSplitRequest) String() string { return proto.CompactTextString(m) }
 func (*ReportBatchSplitRequest) ProtoMessage()    {}
 func (*ReportBatchSplitRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{59}
+	return fileDescriptor_78b27e6f04f44c6e, []int{62}
 }
 func (m *ReportBatchSplitRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4031,7 +4224,7 @@ func (m *ReportBatchSplitResponse) Reset()         { *m = ReportBatchSplitRespon
 func (m *ReportBatchSplitResponse) String() string { return proto.CompactTextString(m) }
 func (*ReportBatchSplitResponse) ProtoMessage()    {}
 func (*ReportBatchSplitResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{60}
+	return fileDescriptor_78b27e6f04f44c6e, []int{63}
 }
 func (m *ReportBatchSplitResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4081,7 +4274,7 @@ func (m *TimeInterval) Reset()         { *m = TimeInterval{} }
 func (m *TimeInterval) String() string { return proto.CompactTextString(m) }
 func (*TimeInterval) ProtoMessage()    {}
 func (*TimeInterval) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{61}
+	return fileDescriptor_78b27e6f04f44c6e, []int{64}
 }
 func (m *TimeInterval) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4136,7 +4329,7 @@ func (m *RecordPair) Reset()         { *m = RecordPair{} }
 func (m *RecordPair) String() string { return proto.CompactTextString(m) }
 func (*RecordPair) ProtoMessage()    {}
 func (*RecordPair) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{62}
+	return fileDescriptor_78b27e6f04f44c6e, []int{65}
 }
 func (m *RecordPair) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4195,7 +4388,7 @@ func (m *PeerStat) Reset()         { *m = PeerStat{} }
 func (m *PeerStat) String() string { return proto.CompactTextString(m) }
 func (*PeerStat) ProtoMessage()    {}
 func (*PeerStat) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{63}
+	return fileDescriptor_78b27e6f04f44c6e, []int{66}
 }
 func (m *PeerStat) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4332,7 +4525,7 @@ func (m *StoreStats) Reset()         { *m = StoreStats{} }
 func (m *StoreStats) String() string { return proto.CompactTextString(m) }
 func (*StoreStats) ProtoMessage()    {}
 func (*StoreStats) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{64}
+	return fileDescriptor_78b27e6f04f44c6e, []int{67}
 }
 func (m *StoreStats) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4578,7 +4771,7 @@ func (m *SlowTrend) Reset()         { *m = SlowTrend{} }
 func (m *SlowTrend) String() string { return proto.CompactTextString(m) }
 func (*SlowTrend) ProtoMessage()    {}
 func (*SlowTrend) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{65}
+	return fileDescriptor_78b27e6f04f44c6e, []int{68}
 }
 func (m *SlowTrend) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4656,7 +4849,7 @@ func (m *SnapshotStat) Reset()         { *m = SnapshotStat{} }
 func (m *SnapshotStat) String() string { return proto.CompactTextString(m) }
 func (*SnapshotStat) ProtoMessage()    {}
 func (*SnapshotStat) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{66}
+	return fileDescriptor_78b27e6f04f44c6e, []int{69}
 }
 func (m *SnapshotStat) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4737,7 +4930,7 @@ func (m *PeerReport) Reset()         { *m = PeerReport{} }
 func (m *PeerReport) String() string { return proto.CompactTextString(m) }
 func (*PeerReport) ProtoMessage()    {}
 func (*PeerReport) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{67}
+	return fileDescriptor_78b27e6f04f44c6e, []int{70}
 }
 func (m *PeerReport) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4813,7 +5006,7 @@ func (m *StoreReport) Reset()         { *m = StoreReport{} }
 func (m *StoreReport) String() string { return proto.CompactTextString(m) }
 func (*StoreReport) ProtoMessage()    {}
 func (*StoreReport) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{68}
+	return fileDescriptor_78b27e6f04f44c6e, []int{71}
 }
 func (m *StoreReport) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4871,7 +5064,7 @@ func (m *StoreHeartbeatRequest) Reset()         { *m = StoreHeartbeatRequest{} }
 func (m *StoreHeartbeatRequest) String() string { return proto.CompactTextString(m) }
 func (*StoreHeartbeatRequest) ProtoMessage()    {}
 func (*StoreHeartbeatRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{69}
+	return fileDescriptor_78b27e6f04f44c6e, []int{72}
 }
 func (m *StoreHeartbeatRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4940,7 +5133,7 @@ func (m *DemoteFailedVoters) Reset()         { *m = DemoteFailedVoters{} }
 func (m *DemoteFailedVoters) String() string { return proto.CompactTextString(m) }
 func (*DemoteFailedVoters) ProtoMessage()    {}
 func (*DemoteFailedVoters) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{70}
+	return fileDescriptor_78b27e6f04f44c6e, []int{73}
 }
 func (m *DemoteFailedVoters) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -4997,7 +5190,7 @@ func (m *ForceLeader) Reset()         { *m = ForceLeader{} }
 func (m *ForceLeader) String() string { return proto.CompactTextString(m) }
 func (*ForceLeader) ProtoMessage()    {}
 func (*ForceLeader) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{71}
+	return fileDescriptor_78b27e6f04f44c6e, []int{74}
 }
 func (m *ForceLeader) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5063,7 +5256,7 @@ func (m *RecoveryPlan) Reset()         { *m = RecoveryPlan{} }
 func (m *RecoveryPlan) String() string { return proto.CompactTextString(m) }
 func (*RecoveryPlan) ProtoMessage()    {}
 func (*RecoveryPlan) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{72}
+	return fileDescriptor_78b27e6f04f44c6e, []int{75}
 }
 func (m *RecoveryPlan) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5147,7 +5340,7 @@ func (m *AwakenRegions) Reset()         { *m = AwakenRegions{} }
 func (m *AwakenRegions) String() string { return proto.CompactTextString(m) }
 func (*AwakenRegions) ProtoMessage()    {}
 func (*AwakenRegions) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{73}
+	return fileDescriptor_78b27e6f04f44c6e, []int{76}
 }
 func (m *AwakenRegions) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5194,7 +5387,7 @@ func (m *ControlGrpc) Reset()         { *m = ControlGrpc{} }
 func (m *ControlGrpc) String() string { return proto.CompactTextString(m) }
 func (*ControlGrpc) ProtoMessage()    {}
 func (*ControlGrpc) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{74}
+	return fileDescriptor_78b27e6f04f44c6e, []int{77}
 }
 func (m *ControlGrpc) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5254,7 +5447,7 @@ func (m *StoreHeartbeatResponse) Reset()         { *m = StoreHeartbeatResponse{}
 func (m *StoreHeartbeatResponse) String() string { return proto.CompactTextString(m) }
 func (*StoreHeartbeatResponse) ProtoMessage()    {}
 func (*StoreHeartbeatResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{75}
+	return fileDescriptor_78b27e6f04f44c6e, []int{78}
 }
 func (m *StoreHeartbeatResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5356,7 +5549,7 @@ func (m *ScatterRegionRequest) Reset()         { *m = ScatterRegionRequest{} }
 func (m *ScatterRegionRequest) String() string { return proto.CompactTextString(m) }
 func (*ScatterRegionRequest) ProtoMessage()    {}
 func (*ScatterRegionRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{76}
+	return fileDescriptor_78b27e6f04f44c6e, []int{79}
 }
 func (m *ScatterRegionRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5454,7 +5647,7 @@ func (m *ScatterRegionResponse) Reset()         { *m = ScatterRegionResponse{} }
 func (m *ScatterRegionResponse) String() string { return proto.CompactTextString(m) }
 func (*ScatterRegionResponse) ProtoMessage()    {}
 func (*ScatterRegionResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{77}
+	return fileDescriptor_78b27e6f04f44c6e, []int{80}
 }
 func (m *ScatterRegionResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5508,7 +5701,7 @@ func (m *GetGCSafePointRequest) Reset()         { *m = GetGCSafePointRequest{} }
 func (m *GetGCSafePointRequest) String() string { return proto.CompactTextString(m) }
 func (*GetGCSafePointRequest) ProtoMessage()    {}
 func (*GetGCSafePointRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{78}
+	return fileDescriptor_78b27e6f04f44c6e, []int{81}
 }
 func (m *GetGCSafePointRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5556,7 +5749,7 @@ func (m *GetGCSafePointResponse) Reset()         { *m = GetGCSafePointResponse{}
 func (m *GetGCSafePointResponse) String() string { return proto.CompactTextString(m) }
 func (*GetGCSafePointResponse) ProtoMessage()    {}
 func (*GetGCSafePointResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{79}
+	return fileDescriptor_78b27e6f04f44c6e, []int{82}
 }
 func (m *GetGCSafePointResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5611,7 +5804,7 @@ func (m *UpdateGCSafePointRequest) Reset()         { *m = UpdateGCSafePointReque
 func (m *UpdateGCSafePointRequest) String() string { return proto.CompactTextString(m) }
 func (*UpdateGCSafePointRequest) ProtoMessage()    {}
 func (*UpdateGCSafePointRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{80}
+	return fileDescriptor_78b27e6f04f44c6e, []int{83}
 }
 func (m *UpdateGCSafePointRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5666,7 +5859,7 @@ func (m *UpdateGCSafePointResponse) Reset()         { *m = UpdateGCSafePointResp
 func (m *UpdateGCSafePointResponse) String() string { return proto.CompactTextString(m) }
 func (*UpdateGCSafePointResponse) ProtoMessage()    {}
 func (*UpdateGCSafePointResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{81}
+	return fileDescriptor_78b27e6f04f44c6e, []int{84}
 }
 func (m *UpdateGCSafePointResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5723,7 +5916,7 @@ func (m *UpdateServiceGCSafePointRequest) Reset()         { *m = UpdateServiceGC
 func (m *UpdateServiceGCSafePointRequest) String() string { return proto.CompactTextString(m) }
 func (*UpdateServiceGCSafePointRequest) ProtoMessage()    {}
 func (*UpdateServiceGCSafePointRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{82}
+	return fileDescriptor_78b27e6f04f44c6e, []int{85}
 }
 func (m *UpdateServiceGCSafePointRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5794,7 +5987,7 @@ func (m *UpdateServiceGCSafePointResponse) Reset()         { *m = UpdateServiceG
 func (m *UpdateServiceGCSafePointResponse) String() string { return proto.CompactTextString(m) }
 func (*UpdateServiceGCSafePointResponse) ProtoMessage()    {}
 func (*UpdateServiceGCSafePointResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{83}
+	return fileDescriptor_78b27e6f04f44c6e, []int{86}
 }
 func (m *UpdateServiceGCSafePointResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5863,7 +6056,7 @@ func (m *GetGCSafePointV2Request) Reset()         { *m = GetGCSafePointV2Request
 func (m *GetGCSafePointV2Request) String() string { return proto.CompactTextString(m) }
 func (*GetGCSafePointV2Request) ProtoMessage()    {}
 func (*GetGCSafePointV2Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{84}
+	return fileDescriptor_78b27e6f04f44c6e, []int{87}
 }
 func (m *GetGCSafePointV2Request) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5918,7 +6111,7 @@ func (m *GetGCSafePointV2Response) Reset()         { *m = GetGCSafePointV2Respon
 func (m *GetGCSafePointV2Response) String() string { return proto.CompactTextString(m) }
 func (*GetGCSafePointV2Response) ProtoMessage()    {}
 func (*GetGCSafePointV2Response) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{85}
+	return fileDescriptor_78b27e6f04f44c6e, []int{88}
 }
 func (m *GetGCSafePointV2Response) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -5973,7 +6166,7 @@ func (m *WatchGCSafePointV2Request) Reset()         { *m = WatchGCSafePointV2Req
 func (m *WatchGCSafePointV2Request) String() string { return proto.CompactTextString(m) }
 func (*WatchGCSafePointV2Request) ProtoMessage()    {}
 func (*WatchGCSafePointV2Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{86}
+	return fileDescriptor_78b27e6f04f44c6e, []int{89}
 }
 func (m *WatchGCSafePointV2Request) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6030,7 +6223,7 @@ func (m *SafePointEvent) Reset()         { *m = SafePointEvent{} }
 func (m *SafePointEvent) String() string { return proto.CompactTextString(m) }
 func (*SafePointEvent) ProtoMessage()    {}
 func (*SafePointEvent) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{87}
+	return fileDescriptor_78b27e6f04f44c6e, []int{90}
 }
 func (m *SafePointEvent) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6093,7 +6286,7 @@ func (m *WatchGCSafePointV2Response) Reset()         { *m = WatchGCSafePointV2Re
 func (m *WatchGCSafePointV2Response) String() string { return proto.CompactTextString(m) }
 func (*WatchGCSafePointV2Response) ProtoMessage()    {}
 func (*WatchGCSafePointV2Response) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{88}
+	return fileDescriptor_78b27e6f04f44c6e, []int{91}
 }
 func (m *WatchGCSafePointV2Response) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6156,7 +6349,7 @@ func (m *UpdateGCSafePointV2Request) Reset()         { *m = UpdateGCSafePointV2R
 func (m *UpdateGCSafePointV2Request) String() string { return proto.CompactTextString(m) }
 func (*UpdateGCSafePointV2Request) ProtoMessage()    {}
 func (*UpdateGCSafePointV2Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{89}
+	return fileDescriptor_78b27e6f04f44c6e, []int{92}
 }
 func (m *UpdateGCSafePointV2Request) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6218,7 +6411,7 @@ func (m *UpdateGCSafePointV2Response) Reset()         { *m = UpdateGCSafePointV2
 func (m *UpdateGCSafePointV2Response) String() string { return proto.CompactTextString(m) }
 func (*UpdateGCSafePointV2Response) ProtoMessage()    {}
 func (*UpdateGCSafePointV2Response) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{90}
+	return fileDescriptor_78b27e6f04f44c6e, []int{93}
 }
 func (m *UpdateGCSafePointV2Response) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6281,7 +6474,7 @@ func (m *UpdateServiceSafePointV2Request) Reset()         { *m = UpdateServiceSa
 func (m *UpdateServiceSafePointV2Request) String() string { return proto.CompactTextString(m) }
 func (*UpdateServiceSafePointV2Request) ProtoMessage()    {}
 func (*UpdateServiceSafePointV2Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{91}
+	return fileDescriptor_78b27e6f04f44c6e, []int{94}
 }
 func (m *UpdateServiceSafePointV2Request) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6359,7 +6552,7 @@ func (m *UpdateServiceSafePointV2Response) Reset()         { *m = UpdateServiceS
 func (m *UpdateServiceSafePointV2Response) String() string { return proto.CompactTextString(m) }
 func (*UpdateServiceSafePointV2Response) ProtoMessage()    {}
 func (*UpdateServiceSafePointV2Response) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{92}
+	return fileDescriptor_78b27e6f04f44c6e, []int{95}
 }
 func (m *UpdateServiceSafePointV2Response) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6427,7 +6620,7 @@ func (m *GetAllGCSafePointV2Request) Reset()         { *m = GetAllGCSafePointV2R
 func (m *GetAllGCSafePointV2Request) String() string { return proto.CompactTextString(m) }
 func (*GetAllGCSafePointV2Request) ProtoMessage()    {}
 func (*GetAllGCSafePointV2Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{93}
+	return fileDescriptor_78b27e6f04f44c6e, []int{96}
 }
 func (m *GetAllGCSafePointV2Request) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6475,7 +6668,7 @@ func (m *GCSafePointV2) Reset()         { *m = GCSafePointV2{} }
 func (m *GCSafePointV2) String() string { return proto.CompactTextString(m) }
 func (*GCSafePointV2) ProtoMessage()    {}
 func (*GCSafePointV2) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{94}
+	return fileDescriptor_78b27e6f04f44c6e, []int{97}
 }
 func (m *GCSafePointV2) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6531,7 +6724,7 @@ func (m *GetAllGCSafePointV2Response) Reset()         { *m = GetAllGCSafePointV2
 func (m *GetAllGCSafePointV2Response) String() string { return proto.CompactTextString(m) }
 func (*GetAllGCSafePointV2Response) ProtoMessage()    {}
 func (*GetAllGCSafePointV2Response) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{95}
+	return fileDescriptor_78b27e6f04f44c6e, []int{98}
 }
 func (m *GetAllGCSafePointV2Response) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6597,7 +6790,7 @@ func (m *RegionStat) Reset()         { *m = RegionStat{} }
 func (m *RegionStat) String() string { return proto.CompactTextString(m) }
 func (*RegionStat) ProtoMessage()    {}
 func (*RegionStat) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{96}
+	return fileDescriptor_78b27e6f04f44c6e, []int{99}
 }
 func (m *RegionStat) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6669,7 +6862,7 @@ func (m *SyncRegionRequest) Reset()         { *m = SyncRegionRequest{} }
 func (m *SyncRegionRequest) String() string { return proto.CompactTextString(m) }
 func (*SyncRegionRequest) ProtoMessage()    {}
 func (*SyncRegionRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{97}
+	return fileDescriptor_78b27e6f04f44c6e, []int{100}
 }
 func (m *SyncRegionRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6730,7 +6923,7 @@ func (m *PeersStats) Reset()         { *m = PeersStats{} }
 func (m *PeersStats) String() string { return proto.CompactTextString(m) }
 func (*PeersStats) ProtoMessage()    {}
 func (*PeersStats) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{98}
+	return fileDescriptor_78b27e6f04f44c6e, []int{101}
 }
 func (m *PeersStats) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6777,7 +6970,7 @@ func (m *Peers) Reset()         { *m = Peers{} }
 func (m *Peers) String() string { return proto.CompactTextString(m) }
 func (*Peers) ProtoMessage()    {}
 func (*Peers) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{99}
+	return fileDescriptor_78b27e6f04f44c6e, []int{102}
 }
 func (m *Peers) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6834,7 +7027,7 @@ func (m *SyncRegionResponse) Reset()         { *m = SyncRegionResponse{} }
 func (m *SyncRegionResponse) String() string { return proto.CompactTextString(m) }
 func (*SyncRegionResponse) ProtoMessage()    {}
 func (*SyncRegionResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{100}
+	return fileDescriptor_78b27e6f04f44c6e, []int{103}
 }
 func (m *SyncRegionResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6931,7 +7124,7 @@ func (m *GetOperatorRequest) Reset()         { *m = GetOperatorRequest{} }
 func (m *GetOperatorRequest) String() string { return proto.CompactTextString(m) }
 func (*GetOperatorRequest) ProtoMessage()    {}
 func (*GetOperatorRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{101}
+	return fileDescriptor_78b27e6f04f44c6e, []int{104}
 }
 func (m *GetOperatorRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -6989,7 +7182,7 @@ func (m *GetOperatorResponse) Reset()         { *m = GetOperatorResponse{} }
 func (m *GetOperatorResponse) String() string { return proto.CompactTextString(m) }
 func (*GetOperatorResponse) ProtoMessage()    {}
 func (*GetOperatorResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{102}
+	return fileDescriptor_78b27e6f04f44c6e, []int{105}
 }
 func (m *GetOperatorResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7067,7 +7260,7 @@ func (m *SyncMaxTSRequest) Reset()         { *m = SyncMaxTSRequest{} }
 func (m *SyncMaxTSRequest) String() string { return proto.CompactTextString(m) }
 func (*SyncMaxTSRequest) ProtoMessage()    {}
 func (*SyncMaxTSRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{103}
+	return fileDescriptor_78b27e6f04f44c6e, []int{106}
 }
 func (m *SyncMaxTSRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7130,7 +7323,7 @@ func (m *SyncMaxTSResponse) Reset()         { *m = SyncMaxTSResponse{} }
 func (m *SyncMaxTSResponse) String() string { return proto.CompactTextString(m) }
 func (*SyncMaxTSResponse) ProtoMessage()    {}
 func (*SyncMaxTSResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{104}
+	return fileDescriptor_78b27e6f04f44c6e, []int{107}
 }
 func (m *SyncMaxTSResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7193,7 +7386,7 @@ func (m *SplitRegionsRequest) Reset()         { *m = SplitRegionsRequest{} }
 func (m *SplitRegionsRequest) String() string { return proto.CompactTextString(m) }
 func (*SplitRegionsRequest) ProtoMessage()    {}
 func (*SplitRegionsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{105}
+	return fileDescriptor_78b27e6f04f44c6e, []int{108}
 }
 func (m *SplitRegionsRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7256,7 +7449,7 @@ func (m *SplitRegionsResponse) Reset()         { *m = SplitRegionsResponse{} }
 func (m *SplitRegionsResponse) String() string { return proto.CompactTextString(m) }
 func (*SplitRegionsResponse) ProtoMessage()    {}
 func (*SplitRegionsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{106}
+	return fileDescriptor_78b27e6f04f44c6e, []int{109}
 }
 func (m *SplitRegionsResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7320,7 +7513,7 @@ func (m *SplitAndScatterRegionsRequest) Reset()         { *m = SplitAndScatterRe
 func (m *SplitAndScatterRegionsRequest) String() string { return proto.CompactTextString(m) }
 func (*SplitAndScatterRegionsRequest) ProtoMessage()    {}
 func (*SplitAndScatterRegionsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{107}
+	return fileDescriptor_78b27e6f04f44c6e, []int{110}
 }
 func (m *SplitAndScatterRegionsRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7391,7 +7584,7 @@ func (m *SplitAndScatterRegionsResponse) Reset()         { *m = SplitAndScatterR
 func (m *SplitAndScatterRegionsResponse) String() string { return proto.CompactTextString(m) }
 func (*SplitAndScatterRegionsResponse) ProtoMessage()    {}
 func (*SplitAndScatterRegionsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{108}
+	return fileDescriptor_78b27e6f04f44c6e, []int{111}
 }
 func (m *SplitAndScatterRegionsResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7460,7 +7653,7 @@ func (m *GetDCLocationInfoRequest) Reset()         { *m = GetDCLocationInfoReque
 func (m *GetDCLocationInfoRequest) String() string { return proto.CompactTextString(m) }
 func (*GetDCLocationInfoRequest) ProtoMessage()    {}
 func (*GetDCLocationInfoRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{109}
+	return fileDescriptor_78b27e6f04f44c6e, []int{112}
 }
 func (m *GetDCLocationInfoRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7519,7 +7712,7 @@ func (m *GetDCLocationInfoResponse) Reset()         { *m = GetDCLocationInfoResp
 func (m *GetDCLocationInfoResponse) String() string { return proto.CompactTextString(m) }
 func (*GetDCLocationInfoResponse) ProtoMessage()    {}
 func (*GetDCLocationInfoResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{110}
+	return fileDescriptor_78b27e6f04f44c6e, []int{113}
 }
 func (m *GetDCLocationInfoResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7590,7 +7783,7 @@ func (m *QueryStats) Reset()         { *m = QueryStats{} }
 func (m *QueryStats) String() string { return proto.CompactTextString(m) }
 func (*QueryStats) ProtoMessage()    {}
 func (*QueryStats) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{111}
+	return fileDescriptor_78b27e6f04f44c6e, []int{114}
 }
 func (m *QueryStats) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7709,7 +7902,7 @@ func (m *ReportBucketsRequest) Reset()         { *m = ReportBucketsRequest{} }
 func (m *ReportBucketsRequest) String() string { return proto.CompactTextString(m) }
 func (*ReportBucketsRequest) ProtoMessage()    {}
 func (*ReportBucketsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{112}
+	return fileDescriptor_78b27e6f04f44c6e, []int{115}
 }
 func (m *ReportBucketsRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7770,7 +7963,7 @@ func (m *ReportBucketsResponse) Reset()         { *m = ReportBucketsResponse{} }
 func (m *ReportBucketsResponse) String() string { return proto.CompactTextString(m) }
 func (*ReportBucketsResponse) ProtoMessage()    {}
 func (*ReportBucketsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{113}
+	return fileDescriptor_78b27e6f04f44c6e, []int{116}
 }
 func (m *ReportBucketsResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7819,7 +8012,7 @@ func (m *ReportMinResolvedTsRequest) Reset()         { *m = ReportMinResolvedTsR
 func (m *ReportMinResolvedTsRequest) String() string { return proto.CompactTextString(m) }
 func (*ReportMinResolvedTsRequest) ProtoMessage()    {}
 func (*ReportMinResolvedTsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{114}
+	return fileDescriptor_78b27e6f04f44c6e, []int{117}
 }
 func (m *ReportMinResolvedTsRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7880,7 +8073,7 @@ func (m *ReportMinResolvedTsResponse) Reset()         { *m = ReportMinResolvedTs
 func (m *ReportMinResolvedTsResponse) String() string { return proto.CompactTextString(m) }
 func (*ReportMinResolvedTsResponse) ProtoMessage()    {}
 func (*ReportMinResolvedTsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{115}
+	return fileDescriptor_78b27e6f04f44c6e, []int{118}
 }
 func (m *ReportMinResolvedTsResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7928,7 +8121,7 @@ func (m *SetExternalTimestampRequest) Reset()         { *m = SetExternalTimestam
 func (m *SetExternalTimestampRequest) String() string { return proto.CompactTextString(m) }
 func (*SetExternalTimestampRequest) ProtoMessage()    {}
 func (*SetExternalTimestampRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{116}
+	return fileDescriptor_78b27e6f04f44c6e, []int{119}
 }
 func (m *SetExternalTimestampRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -7982,7 +8175,7 @@ func (m *SetExternalTimestampResponse) Reset()         { *m = SetExternalTimesta
 func (m *SetExternalTimestampResponse) String() string { return proto.CompactTextString(m) }
 func (*SetExternalTimestampResponse) ProtoMessage()    {}
 func (*SetExternalTimestampResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{117}
+	return fileDescriptor_78b27e6f04f44c6e, []int{120}
 }
 func (m *SetExternalTimestampResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -8029,7 +8222,7 @@ func (m *GetExternalTimestampRequest) Reset()         { *m = GetExternalTimestam
 func (m *GetExternalTimestampRequest) String() string { return proto.CompactTextString(m) }
 func (*GetExternalTimestampRequest) ProtoMessage()    {}
 func (*GetExternalTimestampRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{118}
+	return fileDescriptor_78b27e6f04f44c6e, []int{121}
 }
 func (m *GetExternalTimestampRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -8077,7 +8270,7 @@ func (m *GetExternalTimestampResponse) Reset()         { *m = GetExternalTimesta
 func (m *GetExternalTimestampResponse) String() string { return proto.CompactTextString(m) }
 func (*GetExternalTimestampResponse) ProtoMessage()    {}
 func (*GetExternalTimestampResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{119}
+	return fileDescriptor_78b27e6f04f44c6e, []int{122}
 }
 func (m *GetExternalTimestampResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -8131,7 +8324,7 @@ func (m *GetMinTSRequest) Reset()         { *m = GetMinTSRequest{} }
 func (m *GetMinTSRequest) String() string { return proto.CompactTextString(m) }
 func (*GetMinTSRequest) ProtoMessage()    {}
 func (*GetMinTSRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{120}
+	return fileDescriptor_78b27e6f04f44c6e, []int{123}
 }
 func (m *GetMinTSRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -8179,7 +8372,7 @@ func (m *GetMinTSResponse) Reset()         { *m = GetMinTSResponse{} }
 func (m *GetMinTSResponse) String() string { return proto.CompactTextString(m) }
 func (*GetMinTSResponse) ProtoMessage()    {}
 func (*GetMinTSResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_78b27e6f04f44c6e, []int{121}
+	return fileDescriptor_78b27e6f04f44c6e, []int{124}
 }
 func (m *GetMinTSResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -8263,6 +8456,9 @@ func init() {
 	proto.RegisterType((*ScanRegionsRequest)(nil), "pdpb.ScanRegionsRequest")
 	proto.RegisterType((*Region)(nil), "pdpb.Region")
 	proto.RegisterType((*ScanRegionsResponse)(nil), "pdpb.ScanRegionsResponse")
+	proto.RegisterType((*KeyRange)(nil), "pdpb.KeyRange")
+	proto.RegisterType((*BatchScanRegionsRequest)(nil), "pdpb.BatchScanRegionsRequest")
+	proto.RegisterType((*BatchScanRegionsResponse)(nil), "pdpb.BatchScanRegionsResponse")
 	proto.RegisterType((*GetClusterConfigRequest)(nil), "pdpb.GetClusterConfigRequest")
 	proto.RegisterType((*GetClusterConfigResponse)(nil), "pdpb.GetClusterConfigResponse")
 	proto.RegisterType((*PutClusterConfigRequest)(nil), "pdpb.PutClusterConfigRequest")
@@ -8358,395 +8554,399 @@ func init() {
 func init() { proto.RegisterFile("pdpb.proto", fileDescriptor_78b27e6f04f44c6e) }
 
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+	0xea, 0x1d, 0x26, 0xea, 0x7a, 0x64, 0x3c, 0x75, 0x52, 0x6b, 0x8b, 0xd2, 0x3b, 0x4c, 0x2d, 0x08,
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+	0xf2, 0x6f, 0x3f, 0xbb, 0xa1, 0xfc, 0xf4, 0x67, 0x37, 0x94, 0x1f, 0xfe, 0xc7, 0x8d, 0x05, 0xa8,
+	0xba, 0xde, 0xc9, 0x83, 0xc0, 0x3e, 0x3b, 0x7f, 0x70, 0x76, 0x8e, 0x1f, 0x50, 0x3e, 0x5a, 0xc4,
+	0x9f, 0xf7, 0xfe, 0x2f, 0x00, 0x00, 0xff, 0xff, 0x9a, 0xd5, 0xa1, 0x25, 0xce, 0x59, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -8780,7 +8980,9 @@ type PDClient interface {
 	GetRegion(ctx context.Context, in *GetRegionRequest, opts ...grpc.CallOption) (*GetRegionResponse, error)
 	GetPrevRegion(ctx context.Context, in *GetRegionRequest, opts ...grpc.CallOption) (*GetRegionResponse, error)
 	GetRegionByID(ctx context.Context, in *GetRegionByIDRequest, opts ...grpc.CallOption) (*GetRegionResponse, error)
+	// Deprecated: use BatchScanRegions instead.
 	ScanRegions(ctx context.Context, in *ScanRegionsRequest, opts ...grpc.CallOption) (*ScanRegionsResponse, error)
+	BatchScanRegions(ctx context.Context, in *BatchScanRegionsRequest, opts ...grpc.CallOption) (*BatchScanRegionsResponse, error)
 	AskSplit(ctx context.Context, in *AskSplitRequest, opts ...grpc.CallOption) (*AskSplitResponse, error)
 	ReportSplit(ctx context.Context, in *ReportSplitRequest, opts ...grpc.CallOption) (*ReportSplitResponse, error)
 	AskBatchSplit(ctx context.Context, in *AskBatchSplitRequest, opts ...grpc.CallOption) (*AskBatchSplitResponse, error)
@@ -9011,6 +9213,15 @@ func (c *pDClient) ScanRegions(ctx context.Context, in *ScanRegionsRequest, opts
 	return out, nil
 }
 
+func (c *pDClient) BatchScanRegions(ctx context.Context, in *BatchScanRegionsRequest, opts ...grpc.CallOption) (*BatchScanRegionsResponse, error) {
+	out := new(BatchScanRegionsResponse)
+	err := c.cc.Invoke(ctx, "/pdpb.PD/BatchScanRegions", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Deprecated: Do not use.
 func (c *pDClient) AskSplit(ctx context.Context, in *AskSplitRequest, opts ...grpc.CallOption) (*AskSplitResponse, error) {
 	out := new(AskSplitResponse)
@@ -9388,7 +9599,9 @@ type PDServer interface {
 	GetRegion(context.Context, *GetRegionRequest) (*GetRegionResponse, error)
 	GetPrevRegion(context.Context, *GetRegionRequest) (*GetRegionResponse, error)
 	GetRegionByID(context.Context, *GetRegionByIDRequest) (*GetRegionResponse, error)
+	// Deprecated: use BatchScanRegions instead.
 	ScanRegions(context.Context, *ScanRegionsRequest) (*ScanRegionsResponse, error)
+	BatchScanRegions(context.Context, *BatchScanRegionsRequest) (*BatchScanRegionsResponse, error)
 	AskSplit(context.Context, *AskSplitRequest) (*AskSplitResponse, error)
 	ReportSplit(context.Context, *ReportSplitRequest) (*ReportSplitResponse, error)
 	AskBatchSplit(context.Context, *AskBatchSplitRequest) (*AskBatchSplitResponse, error)
@@ -9475,6 +9688,9 @@ func (*UnimplementedPDServer) GetRegionByID(ctx context.Context, req *GetRegionB
 func (*UnimplementedPDServer) ScanRegions(ctx context.Context, req *ScanRegionsRequest) (*ScanRegionsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ScanRegions not implemented")
 }
+func (*UnimplementedPDServer) BatchScanRegions(ctx context.Context, req *BatchScanRegionsRequest) (*BatchScanRegionsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method BatchScanRegions not implemented")
+}
 func (*UnimplementedPDServer) AskSplit(ctx context.Context, req *AskSplitRequest) (*AskSplitResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AskSplit not implemented")
 }
@@ -9871,6 +10087,24 @@ func _PD_ScanRegions_Handler(srv interface{}, ctx context.Context, dec func(inte
 	return interceptor(ctx, in, info, handler)
 }
 
+func _PD_BatchScanRegions_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(BatchScanRegionsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(PDServer).BatchScanRegions(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/pdpb.PD/BatchScanRegions",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(PDServer).BatchScanRegions(ctx, req.(*BatchScanRegionsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _PD_AskSplit_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(AskSplitRequest)
 	if err := dec(in); err != nil {
@@ -10475,6 +10709,10 @@ var _PD_serviceDesc = grpc.ServiceDesc{
 			MethodName: "ScanRegions",
 			Handler:    _PD_ScanRegions_Handler,
 		},
+		{
+			MethodName: "BatchScanRegions",
+			Handler:    _PD_BatchScanRegions_Handler,
+		},
 		{
 			MethodName: "AskSplit",
 			Handler:    _PD_AskSplit_Handler,
@@ -12200,6 +12438,18 @@ func (m *Region) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
+	if m.Buckets != nil {
+		{
+			size, err := m.Buckets.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintPdpb(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x2a
+	}
 	if len(m.PendingPeers) > 0 {
 		for iNdEx := len(m.PendingPeers) - 1; iNdEx >= 0; iNdEx-- {
 			{
@@ -12336,6 +12586,168 @@ func (m *ScanRegionsResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *KeyRange) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *KeyRange) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *KeyRange) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.XXX_unrecognized != nil {
+		i -= len(m.XXX_unrecognized)
+		copy(dAtA[i:], m.XXX_unrecognized)
+	}
+	if len(m.EndKey) > 0 {
+		i -= len(m.EndKey)
+		copy(dAtA[i:], m.EndKey)
+		i = encodeVarintPdpb(dAtA, i, uint64(len(m.EndKey)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.StartKey) > 0 {
+		i -= len(m.StartKey)
+		copy(dAtA[i:], m.StartKey)
+		i = encodeVarintPdpb(dAtA, i, uint64(len(m.StartKey)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *BatchScanRegionsRequest) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *BatchScanRegionsRequest) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *BatchScanRegionsRequest) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.XXX_unrecognized != nil {
+		i -= len(m.XXX_unrecognized)
+		copy(dAtA[i:], m.XXX_unrecognized)
+	}
+	if m.Limit != 0 {
+		i = encodeVarintPdpb(dAtA, i, uint64(m.Limit))
+		i--
+		dAtA[i] = 0x20
+	}
+	if len(m.Ranges) > 0 {
+		for iNdEx := len(m.Ranges) - 1; iNdEx >= 0; iNdEx-- {
+			{
+				size, err := m.Ranges[iNdEx].MarshalToSizedBuffer(dAtA[:i])
+				if err != nil {
+					return 0, err
+				}
+				i -= size
+				i = encodeVarintPdpb(dAtA, i, uint64(size))
+			}
+			i--
+			dAtA[i] = 0x1a
+		}
+	}
+	if m.NeedBuckets {
+		i--
+		if m.NeedBuckets {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i--
+		dAtA[i] = 0x10
+	}
+	if m.Header != nil {
+		{
+			size, err := m.Header.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintPdpb(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *BatchScanRegionsResponse) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *BatchScanRegionsResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *BatchScanRegionsResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.XXX_unrecognized != nil {
+		i -= len(m.XXX_unrecognized)
+		copy(dAtA[i:], m.XXX_unrecognized)
+	}
+	if len(m.Regions) > 0 {
+		for iNdEx := len(m.Regions) - 1; iNdEx >= 0; iNdEx-- {
+			{
+				size, err := m.Regions[iNdEx].MarshalToSizedBuffer(dAtA[:i])
+				if err != nil {
+					return 0, err
+				}
+				i -= size
+				i = encodeVarintPdpb(dAtA, i, uint64(size))
+			}
+			i--
+			dAtA[i] = 0x12
+		}
+	}
+	if m.Header != nil {
+		{
+			size, err := m.Header.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintPdpb(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
 func (m *GetClusterConfigRequest) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -12821,20 +13233,20 @@ func (m *GetClusterInfoResponse) MarshalToSizedBuffer(dAtA []byte) (int, error)
 		}
 	}
 	if len(m.ServiceModes) > 0 {
-		dAtA52 := make([]byte, len(m.ServiceModes)*10)
-		var j51 int
+		dAtA55 := make([]byte, len(m.ServiceModes)*10)
+		var j54 int
 		for _, num := range m.ServiceModes {
 			for num >= 1<<7 {
-				dAtA52[j51] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA55[j54] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j51++
+				j54++
 			}
-			dAtA52[j51] = uint8(num)
-			j51++
+			dAtA55[j54] = uint8(num)
+			j54++
 		}
-		i -= j51
-		copy(dAtA[i:], dAtA52[:j51])
-		i = encodeVarintPdpb(dAtA, i, uint64(j51))
+		i -= j54
+		copy(dAtA[i:], dAtA55[:j54])
+		i = encodeVarintPdpb(dAtA, i, uint64(j54))
 		i--
 		dAtA[i] = 0x12
 	}
@@ -13592,20 +14004,20 @@ func (m *AskSplitResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
 	if len(m.NewPeerIds) > 0 {
-		dAtA76 := make([]byte, len(m.NewPeerIds)*10)
-		var j75 int
+		dAtA79 := make([]byte, len(m.NewPeerIds)*10)
+		var j78 int
 		for _, num := range m.NewPeerIds {
 			for num >= 1<<7 {
-				dAtA76[j75] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA79[j78] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j75++
+				j78++
 			}
-			dAtA76[j75] = uint8(num)
-			j75++
+			dAtA79[j78] = uint8(num)
+			j78++
 		}
-		i -= j75
-		copy(dAtA[i:], dAtA76[:j75])
-		i = encodeVarintPdpb(dAtA, i, uint64(j75))
+		i -= j78
+		copy(dAtA[i:], dAtA79[:j78])
+		i = encodeVarintPdpb(dAtA, i, uint64(j78))
 		i--
 		dAtA[i] = 0x1a
 	}
@@ -13812,20 +14224,20 @@ func (m *SplitID) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
 	if len(m.NewPeerIds) > 0 {
-		dAtA85 := make([]byte, len(m.NewPeerIds)*10)
-		var j84 int
+		dAtA88 := make([]byte, len(m.NewPeerIds)*10)
+		var j87 int
 		for _, num := range m.NewPeerIds {
 			for num >= 1<<7 {
-				dAtA85[j84] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA88[j87] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j84++
+				j87++
 			}
-			dAtA85[j84] = uint8(num)
-			j84++
+			dAtA88[j87] = uint8(num)
+			j87++
 		}
-		i -= j84
-		copy(dAtA[i:], dAtA85[:j84])
-		i = encodeVarintPdpb(dAtA, i, uint64(j84))
+		i -= j87
+		copy(dAtA[i:], dAtA88[:j87])
+		i = encodeVarintPdpb(dAtA, i, uint64(j87))
 		i--
 		dAtA[i] = 0x12
 	}
@@ -14215,20 +14627,20 @@ func (m *StoreStats) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		dAtA[i] = 0xc0
 	}
 	if len(m.DamagedRegionsId) > 0 {
-		dAtA92 := make([]byte, len(m.DamagedRegionsId)*10)
-		var j91 int
+		dAtA95 := make([]byte, len(m.DamagedRegionsId)*10)
+		var j94 int
 		for _, num := range m.DamagedRegionsId {
 			for num >= 1<<7 {
-				dAtA92[j91] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA95[j94] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j91++
+				j94++
 			}
-			dAtA92[j91] = uint8(num)
-			j91++
+			dAtA95[j94] = uint8(num)
+			j94++
 		}
-		i -= j91
-		copy(dAtA[i:], dAtA92[:j91])
-		i = encodeVarintPdpb(dAtA, i, uint64(j91))
+		i -= j94
+		copy(dAtA[i:], dAtA95[:j94])
+		i = encodeVarintPdpb(dAtA, i, uint64(j94))
 		i--
 		dAtA[i] = 0x1
 		i--
@@ -14796,38 +15208,38 @@ func (m *ForceLeader) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
 	if len(m.EnterForceLeaders) > 0 {
-		dAtA102 := make([]byte, len(m.EnterForceLeaders)*10)
-		var j101 int
+		dAtA105 := make([]byte, len(m.EnterForceLeaders)*10)
+		var j104 int
 		for _, num := range m.EnterForceLeaders {
 			for num >= 1<<7 {
-				dAtA102[j101] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA105[j104] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j101++
+				j104++
 			}
-			dAtA102[j101] = uint8(num)
-			j101++
+			dAtA105[j104] = uint8(num)
+			j104++
 		}
-		i -= j101
-		copy(dAtA[i:], dAtA102[:j101])
-		i = encodeVarintPdpb(dAtA, i, uint64(j101))
+		i -= j104
+		copy(dAtA[i:], dAtA105[:j104])
+		i = encodeVarintPdpb(dAtA, i, uint64(j104))
 		i--
 		dAtA[i] = 0x12
 	}
 	if len(m.FailedStores) > 0 {
-		dAtA104 := make([]byte, len(m.FailedStores)*10)
-		var j103 int
+		dAtA107 := make([]byte, len(m.FailedStores)*10)
+		var j106 int
 		for _, num := range m.FailedStores {
 			for num >= 1<<7 {
-				dAtA104[j103] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA107[j106] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j103++
+				j106++
 			}
-			dAtA104[j103] = uint8(num)
-			j103++
+			dAtA107[j106] = uint8(num)
+			j106++
 		}
-		i -= j103
-		copy(dAtA[i:], dAtA104[:j103])
-		i = encodeVarintPdpb(dAtA, i, uint64(j103))
+		i -= j106
+		copy(dAtA[i:], dAtA107[:j106])
+		i = encodeVarintPdpb(dAtA, i, uint64(j106))
 		i--
 		dAtA[i] = 0xa
 	}
@@ -14890,20 +15302,20 @@ func (m *RecoveryPlan) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		}
 	}
 	if len(m.Tombstones) > 0 {
-		dAtA107 := make([]byte, len(m.Tombstones)*10)
-		var j106 int
+		dAtA110 := make([]byte, len(m.Tombstones)*10)
+		var j109 int
 		for _, num := range m.Tombstones {
 			for num >= 1<<7 {
-				dAtA107[j106] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA110[j109] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j106++
+				j109++
 			}
-			dAtA107[j106] = uint8(num)
-			j106++
+			dAtA110[j109] = uint8(num)
+			j109++
 		}
-		i -= j106
-		copy(dAtA[i:], dAtA107[:j106])
-		i = encodeVarintPdpb(dAtA, i, uint64(j106))
+		i -= j109
+		copy(dAtA[i:], dAtA110[:j109])
+		i = encodeVarintPdpb(dAtA, i, uint64(j109))
 		i--
 		dAtA[i] = 0x1a
 	}
@@ -14963,20 +15375,20 @@ func (m *AwakenRegions) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
 	if len(m.AbnormalStores) > 0 {
-		dAtA109 := make([]byte, len(m.AbnormalStores)*10)
-		var j108 int
+		dAtA112 := make([]byte, len(m.AbnormalStores)*10)
+		var j111 int
 		for _, num := range m.AbnormalStores {
 			for num >= 1<<7 {
-				dAtA109[j108] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA112[j111] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j108++
+				j111++
 			}
-			dAtA109[j108] = uint8(num)
-			j108++
+			dAtA112[j111] = uint8(num)
+			j111++
 		}
-		i -= j108
-		copy(dAtA[i:], dAtA109[:j108])
-		i = encodeVarintPdpb(dAtA, i, uint64(j108))
+		i -= j111
+		copy(dAtA[i:], dAtA112[:j111])
+		i = encodeVarintPdpb(dAtA, i, uint64(j111))
 		i--
 		dAtA[i] = 0xa
 	}
@@ -15159,20 +15571,20 @@ func (m *ScatterRegionRequest) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		dAtA[i] = 0x38
 	}
 	if len(m.RegionsId) > 0 {
-		dAtA116 := make([]byte, len(m.RegionsId)*10)
-		var j115 int
+		dAtA119 := make([]byte, len(m.RegionsId)*10)
+		var j118 int
 		for _, num := range m.RegionsId {
 			for num >= 1<<7 {
-				dAtA116[j115] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA119[j118] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j115++
+				j118++
 			}
-			dAtA116[j115] = uint8(num)
-			j115++
+			dAtA119[j118] = uint8(num)
+			j118++
 		}
-		i -= j115
-		copy(dAtA[i:], dAtA116[:j115])
-		i = encodeVarintPdpb(dAtA, i, uint64(j115))
+		i -= j118
+		copy(dAtA[i:], dAtA119[:j118])
+		i = encodeVarintPdpb(dAtA, i, uint64(j118))
 		i--
 		dAtA[i] = 0x32
 	}
@@ -16753,20 +17165,20 @@ func (m *SplitRegionsResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
 	if len(m.RegionsId) > 0 {
-		dAtA148 := make([]byte, len(m.RegionsId)*10)
-		var j147 int
+		dAtA151 := make([]byte, len(m.RegionsId)*10)
+		var j150 int
 		for _, num := range m.RegionsId {
 			for num >= 1<<7 {
-				dAtA148[j147] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA151[j150] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j147++
+				j150++
 			}
-			dAtA148[j147] = uint8(num)
-			j147++
+			dAtA151[j150] = uint8(num)
+			j150++
 		}
-		i -= j147
-		copy(dAtA[i:], dAtA148[:j147])
-		i = encodeVarintPdpb(dAtA, i, uint64(j147))
+		i -= j150
+		copy(dAtA[i:], dAtA151[:j150])
+		i = encodeVarintPdpb(dAtA, i, uint64(j150))
 		i--
 		dAtA[i] = 0x1a
 	}
@@ -16875,20 +17287,20 @@ func (m *SplitAndScatterRegionsResponse) MarshalToSizedBuffer(dAtA []byte) (int,
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
 	if len(m.RegionsId) > 0 {
-		dAtA152 := make([]byte, len(m.RegionsId)*10)
-		var j151 int
+		dAtA155 := make([]byte, len(m.RegionsId)*10)
+		var j154 int
 		for _, num := range m.RegionsId {
 			for num >= 1<<7 {
-				dAtA152[j151] = uint8(uint64(num)&0x7f | 0x80)
+				dAtA155[j154] = uint8(uint64(num)&0x7f | 0x80)
 				num >>= 7
-				j151++
+				j154++
 			}
-			dAtA152[j151] = uint8(num)
-			j151++
+			dAtA155[j154] = uint8(num)
+			j154++
 		}
-		i -= j151
-		copy(dAtA[i:], dAtA152[:j151])
-		i = encodeVarintPdpb(dAtA, i, uint64(j151))
+		i -= j154
+		copy(dAtA[i:], dAtA155[:j154])
+		i = encodeVarintPdpb(dAtA, i, uint64(j154))
 		i--
 		dAtA[i] = 0x22
 	}
@@ -18248,7 +18660,11 @@ func (m *Region) Size() (n int) {
 			n += 1 + l + sovPdpb(uint64(l))
 		}
 	}
-	if m.XXX_unrecognized != nil {
+	if m.Buckets != nil {
+		l = m.Buckets.Size()
+		n += 1 + l + sovPdpb(uint64(l))
+	}
+	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
 	return n
@@ -18288,6 +18704,76 @@ func (m *ScanRegionsResponse) Size() (n int) {
 	return n
 }
 
+func (m *KeyRange) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.StartKey)
+	if l > 0 {
+		n += 1 + l + sovPdpb(uint64(l))
+	}
+	l = len(m.EndKey)
+	if l > 0 {
+		n += 1 + l + sovPdpb(uint64(l))
+	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
+	return n
+}
+
+func (m *BatchScanRegionsRequest) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Header != nil {
+		l = m.Header.Size()
+		n += 1 + l + sovPdpb(uint64(l))
+	}
+	if m.NeedBuckets {
+		n += 2
+	}
+	if len(m.Ranges) > 0 {
+		for _, e := range m.Ranges {
+			l = e.Size()
+			n += 1 + l + sovPdpb(uint64(l))
+		}
+	}
+	if m.Limit != 0 {
+		n += 1 + sovPdpb(uint64(m.Limit))
+	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
+	return n
+}
+
+func (m *BatchScanRegionsResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Header != nil {
+		l = m.Header.Size()
+		n += 1 + l + sovPdpb(uint64(l))
+	}
+	if len(m.Regions) > 0 {
+		for _, e := range m.Regions {
+			l = e.Size()
+			n += 1 + l + sovPdpb(uint64(l))
+		}
+	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
+	return n
+}
+
 func (m *GetClusterConfigRequest) Size() (n int) {
 	if m == nil {
 		return 0
@@ -24565,6 +25051,42 @@ func (m *Region) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 5:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Buckets", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Buckets == nil {
+				m.Buckets = &metapb.Buckets{}
+			}
+			if err := m.Buckets.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipPdpb(dAtA[iNdEx:])
@@ -24776,6 +25298,406 @@ func (m *ScanRegionsResponse) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *KeyRange) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowPdpb
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: KeyRange: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: KeyRange: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field StartKey", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.StartKey = append(m.StartKey[:0], dAtA[iNdEx:postIndex]...)
+			if m.StartKey == nil {
+				m.StartKey = []byte{}
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field EndKey", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.EndKey = append(m.EndKey[:0], dAtA[iNdEx:postIndex]...)
+			if m.EndKey == nil {
+				m.EndKey = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipPdpb(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *BatchScanRegionsRequest) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowPdpb
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: BatchScanRegionsRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: BatchScanRegionsRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Header", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Header == nil {
+				m.Header = &RequestHeader{}
+			}
+			if err := m.Header.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field NeedBuckets", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.NeedBuckets = bool(v != 0)
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Ranges", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Ranges = append(m.Ranges, &KeyRange{})
+			if err := m.Ranges[len(m.Ranges)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 4:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Limit", wireType)
+			}
+			m.Limit = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.Limit |= int32(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		default:
+			iNdEx = preIndex
+			skippy, err := skipPdpb(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *BatchScanRegionsResponse) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowPdpb
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: BatchScanRegionsResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: BatchScanRegionsResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Header", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Header == nil {
+				m.Header = &ResponseHeader{}
+			}
+			if err := m.Header.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Regions", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPdpb
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Regions = append(m.Regions, &Region{})
+			if err := m.Regions[len(m.Regions)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipPdpb(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthPdpb
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *GetClusterConfigRequest) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
diff --git a/proto/pdpb.proto b/proto/pdpb.proto
index b25d8ee26..1b56dc5ec 100644
--- a/proto/pdpb.proto
+++ b/proto/pdpb.proto
@@ -51,8 +51,11 @@ service PD {
 
     rpc GetRegionByID(GetRegionByIDRequest) returns (GetRegionResponse) {}
 
+    // Deprecated: use BatchScanRegions instead.
     rpc ScanRegions(ScanRegionsRequest) returns (ScanRegionsResponse) {}
 
+    rpc BatchScanRegions(BatchScanRegionsRequest) returns (BatchScanRegionsResponse) {}
+
     rpc AskSplit(AskSplitRequest) returns (AskSplitResponse) {
         // Use AskBatchSplit instead.
         option deprecated = true;
@@ -331,7 +334,7 @@ message GetRegionByIDRequest {
 }
 
 // Use GetRegionResponse as the response of GetRegionByIDRequest.
-
+// Deprecated: use BatchScanRegionsRequest instead.
 message ScanRegionsRequest {
     RequestHeader header = 1;
 
@@ -348,6 +351,8 @@ message Region {
     // Pending peers are the peers that the leader can't consider as
     // working followers.
     repeated metapb.Peer pending_peers = 4;
+    // buckets isn't nil only when need_buckets is true.
+    metapb.Buckets buckets = 5;
 }
 
 message ScanRegionsResponse {
@@ -361,6 +366,26 @@ message ScanRegionsResponse {
     repeated Region regions = 4;
 }
 
+message KeyRange {
+    bytes start_key = 1;
+    bytes end_key = 2; // end_key is +inf when it is empty.
+}
+
+message BatchScanRegionsRequest {
+    RequestHeader header = 1;
+    bool need_buckets = 2;
+
+    repeated KeyRange ranges = 3; // the given ranges must be in order.
+    int32 limit = 4; // limit the total number of regions to scan.
+}
+
+message BatchScanRegionsResponse {
+    ResponseHeader header = 1;
+
+    // the returned regions are flattened into a list, because the given ranges can located in the same range, we do not return duplicated regions then.
+    repeated Region regions = 2;
+}
+
 message GetClusterConfigRequest {
     RequestHeader header = 1;
 }
diff --git a/scripts/proto.lock b/scripts/proto.lock
index af12b2340..f1cea4854 100644
--- a/scripts/proto.lock
+++ b/scripts/proto.lock
@@ -13713,6 +13713,11 @@
                 "name": "pending_peers",
                 "type": "metapb.Peer",
                 "is_repeated": true
+              },
+              {
+                "id": 5,
+                "name": "buckets",
+                "type": "metapb.Buckets"
               }
             ]
           },
@@ -13744,6 +13749,63 @@
               }
             ]
           },
+          {
+            "name": "KeyRange",
+            "fields": [
+              {
+                "id": 1,
+                "name": "start_key",
+                "type": "bytes"
+              },
+              {
+                "id": 2,
+                "name": "end_key",
+                "type": "bytes"
+              }
+            ]
+          },
+          {
+            "name": "BatchScanRegionsRequest",
+            "fields": [
+              {
+                "id": 1,
+                "name": "header",
+                "type": "RequestHeader"
+              },
+              {
+                "id": 2,
+                "name": "need_buckets",
+                "type": "bool"
+              },
+              {
+                "id": 3,
+                "name": "ranges",
+                "type": "KeyRange",
+                "is_repeated": true
+              },
+              {
+                "id": 4,
+                "name": "limit",
+                "type": "int32"
+              }
+            ]
+          },
+          {
+            "name": "BatchScanRegionsResponse",
+            "fields": [
+              {
+                "id": 1,
+                "name": "header",
+                "type": "ResponseHeader"
+              },
+              {
+                "id": 2,
+                "name": "regions",
+                "type": "Region",
+                "is_repeated": true
+              }
+            ]
+          },
           {
             "name": "GetClusterConfigRequest",
             "fields": [
@@ -15831,6 +15893,11 @@
                 "in_type": "ScanRegionsRequest",
                 "out_type": "ScanRegionsResponse"
               },
+              {
+                "name": "BatchScanRegions",
+                "in_type": "BatchScanRegionsRequest",
+                "out_type": "BatchScanRegionsResponse"
+              },
               {
                 "name": "AskSplit",
                 "in_type": "AskSplitRequest",