diff --git a/client.go b/client.go
index 8f4f282f8..bbf118399 100644
--- a/client.go
+++ b/client.go
@@ -303,6 +303,32 @@ func (c *InternalHTTPClient) Import(ctx context.Context, index, frame string, sl
 	return nil
 }
 
+// ImportK bulk imports bits to a host.
+func (c *InternalHTTPClient) ImportK(ctx context.Context, index, frame string, bits []Bit) error {
+	if index == "" {
+		return ErrIndexRequired
+	} else if frame == "" {
+		return ErrFrameRequired
+	}
+
+	buf, err := marshalImportPayloadK(index, frame, bits)
+	if err != nil {
+		return fmt.Errorf("Error Creating Payload: %s", err)
+	}
+
+	node := &Node{
+		Scheme: c.defaultURI.Scheme(),
+		Host:   c.defaultURI.HostPort(),
+	}
+
+	// Import to node.
+	if err := c.importNode(ctx, node, buf); err != nil {
+		return fmt.Errorf("import node: host=%s, err=%s", node.Host, err)
+	}
+
+	return nil
+}
+
 func (c *InternalHTTPClient) EnsureIndex(ctx context.Context, name string, options IndexOptions) error {
 	err := c.CreateIndex(ctx, name, options)
 	if err == nil || err == ErrIndexExists {
@@ -341,6 +367,27 @@ func marshalImportPayload(index, frame string, slice uint64, bits []Bit) ([]byte
 	return buf, nil
 }
 
+// marshalImportPayloadK marshalls the import parameters into a protobuf byte slice.
+func marshalImportPayloadK(index, frame string, bits []Bit) ([]byte, error) {
+	// Separate row and column IDs to reduce allocations.
+	rowKeys := Bits(bits).RowKeys()
+	columnKeys := Bits(bits).ColumnKeys()
+	timestamps := Bits(bits).Timestamps()
+
+	// Marshal bits to protobufs.
+	buf, err := proto.Marshal(&internal.ImportRequest{
+		Index:      index,
+		Frame:      frame,
+		RowKeys:    rowKeys,
+		ColumnKeys: columnKeys,
+		Timestamps: timestamps,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("marshal import request: %s", err)
+	}
+	return buf, nil
+}
+
 // importNode sends a pre-marshaled import request to a node.
 func (c *InternalHTTPClient) importNode(ctx context.Context, node *Node, buf []byte) error {
 	// Create URL & HTTP request.
@@ -1115,6 +1162,8 @@ func (c *InternalHTTPClient) NodeID(uri *URI) (string, error) {
 type Bit struct {
 	RowID     uint64
 	ColumnID  uint64
+	RowKey    string
+	ColumnKey string
 	Timestamp int64
 }
 
@@ -1152,6 +1201,24 @@ func (p Bits) ColumnIDs() []uint64 {
 	return other
 }
 
+// RowKeys returns a slice of all the row keys.
+func (p Bits) RowKeys() []string {
+	other := make([]string, len(p))
+	for i := range p {
+		other[i] = p[i].RowKey
+	}
+	return other
+}
+
+// ColumnKeys returns a slice of all the column keys.
+func (p Bits) ColumnKeys() []string {
+	other := make([]string, len(p))
+	for i := range p {
+		other[i] = p[i].ColumnKey
+	}
+	return other
+}
+
 // Timestamps returns a slice of all the timestamps.
 func (p Bits) Timestamps() []int64 {
 	other := make([]int64, len(p))
@@ -1271,6 +1338,7 @@ type InternalClient interface {
 	FragmentNodes(ctx context.Context, index string, slice uint64) ([]*Node, error)
 	ExecuteQuery(ctx context.Context, index string, queryRequest *internal.QueryRequest) (*internal.QueryResponse, error)
 	Import(ctx context.Context, index, frame string, slice uint64, bits []Bit) error
+	ImportK(ctx context.Context, index, frame string, bits []Bit) error
 	EnsureIndex(ctx context.Context, name string, options IndexOptions) error
 	EnsureFrame(ctx context.Context, indexName string, frameName string, options FrameOptions) error
 	ImportValue(ctx context.Context, index, frame, field string, slice uint64, vals []FieldValue) error
diff --git a/cmd/import.go b/cmd/import.go
index 250dccfd3..8692fa318 100644
--- a/cmd/import.go
+++ b/cmd/import.go
@@ -56,6 +56,7 @@ omitted. If it is present then its format should be YYYY-MM-DDTHH:MM.
 	flags.StringVarP(&Importer.Index, "index", "i", "", "Pilosa index to import into.")
 	flags.StringVarP(&Importer.Frame, "frame", "f", "", "Frame to import into.")
 	flags.StringVarP(&Importer.Field, "field", "", "", "Field to import into.")
+	flags.BoolVar(&Importer.StringKeys, "string-keys", false, "Treat payload as string keys.")
 	flags.IntVarP(&Importer.BufferSize, "buffer-size", "s", 10000000, "Number of bits to buffer/sort before importing.")
 	flags.BoolVarP(&Importer.Sort, "sort", "", false, "Enables sorting before import.")
 	flags.BoolVarP(&Importer.CreateSchema, "create", "e", false, "Create the schema if it does not exist before import.")
diff --git a/ctl/import.go b/ctl/import.go
index 179385db5..8103bf673 100644
--- a/ctl/import.go
+++ b/ctl/import.go
@@ -48,6 +48,9 @@ type ImportCommand struct {
 	// For Range-Encoded fields, name of the Field to import into.
 	Field string `json:"field"`
 
+	// Indicates that the payload should be treated as string keys.
+	StringKeys bool `json:"StringKeys"`
+
 	// Filenames to import from.
 	Paths []string `json:"paths"`
 
@@ -131,7 +134,11 @@ func (cmd *ImportCommand) importPath(ctx context.Context, path string) error {
 	if cmd.Field != "" {
 		return cmd.bufferFieldValues(ctx, path)
 	} else {
-		return cmd.bufferBits(ctx, path)
+		if cmd.StringKeys {
+			return cmd.bufferBitsK(ctx, path)
+		} else {
+			return cmd.bufferBits(ctx, path)
+		}
 	}
 }
 
@@ -240,7 +247,102 @@ func (cmd *ImportCommand) importBits(ctx context.Context, bits []pilosa.Bit) err
 	}
 
 	return nil
+}
 
+// bufferBitsK buffers slices of keys to be imported as a batch.
+func (cmd *ImportCommand) bufferBitsK(ctx context.Context, path string) error {
+	a := make([]pilosa.Bit, 0, cmd.BufferSize)
+
+	var r *csv.Reader
+
+	if path != "-" {
+		// Open file for reading.
+		f, err := os.Open(path)
+		if err != nil {
+			return err
+		}
+		defer f.Close()
+
+		// Read rows as bits.
+		r = csv.NewReader(f)
+	} else {
+		r = csv.NewReader(cmd.Stdin)
+	}
+
+	r.FieldsPerRecord = -1
+	rnum := 0
+	for {
+		rnum++
+
+		// Read CSV row.
+		record, err := r.Read()
+		if err == io.EOF {
+			break
+		} else if err != nil {
+			return err
+		}
+
+		// Ignore blank rows.
+		if record[0] == "" {
+			continue
+		} else if len(record) < 2 {
+			return fmt.Errorf("bad column count on row %d: col=%d", rnum, len(record))
+		}
+
+		var bit pilosa.Bit
+
+		// Parse row key.
+		if record[0] == "" {
+			return fmt.Errorf("invalid row key on row %d: %q", rnum, record[0])
+		}
+		bit.RowKey = record[0]
+
+		// Parse column key.
+		if record[1] == "" {
+			return fmt.Errorf("invalid column id on row %d: %q", rnum, record[1])
+		}
+		bit.ColumnKey = record[1]
+
+		// Parse time, if exists.
+		if len(record) > 2 && record[2] != "" {
+			t, err := time.Parse(pilosa.TimeFormat, record[2])
+			if err != nil {
+				return fmt.Errorf("invalid timestamp on row %d: %q", rnum, record[2])
+			}
+			bit.Timestamp = t.UnixNano()
+		}
+
+		a = append(a, bit)
+
+		// If we've reached the buffer size then import bits.
+		if len(a) == cmd.BufferSize {
+			if err := cmd.importBitsK(ctx, a); err != nil {
+				return err
+			}
+			a = a[:0]
+		}
+	}
+
+	// If there are still bitKs in the buffer then flush them.
+	if err := cmd.importBitsK(ctx, a); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// importBitsK sends batches of bitKs to the server.
+func (cmd *ImportCommand) importBitsK(ctx context.Context, bits []pilosa.Bit) error {
+	logger := log.New(cmd.Stderr, "", log.LstdFlags)
+
+	// TODO: does it help to sort the rowKeys?
+
+	logger.Printf("importing keys: n=%d", len(bits))
+	if err := cmd.Client.ImportK(ctx, cmd.Index, cmd.Frame, bits); err != nil {
+		return err
+	}
+
+	return nil
 }
 
 // bufferFieldValues buffers slices of fieldValues to be imported as a batch.
diff --git a/handler.go b/handler.go
index b81b8e124..e5cce4648 100644
--- a/handler.go
+++ b/handler.go
@@ -1627,7 +1627,8 @@ func (h *Handler) logger() *log.Logger {
 
 // QueryResult types.
 const (
-	QueryResultTypeBitmap uint32 = iota
+	QueryResultTypeNil uint32 = iota
+	QueryResultTypeBitmap
 	QueryResultTypePairs
 	QueryResultTypeSumCount
 	QueryResultTypeUint64
@@ -1727,6 +1728,8 @@ func encodeQueryResponse(resp *QueryResponse) *internal.QueryResponse {
 		case bool:
 			pb.Results[i].Type = QueryResultTypeBool
 			pb.Results[i].Changed = result
+		case nil:
+			pb.Results[i].Type = QueryResultTypeNil
 		}
 	}
 
diff --git a/internal/public.pb.go b/internal/public.pb.go
index 1676d4ae5..dfb9a819e 100644
--- a/internal/public.pb.go
+++ b/internal/public.pb.go
@@ -415,6 +415,8 @@ type ImportRequest struct {
 	Slice      uint64   `protobuf:"varint,3,opt,name=Slice,proto3" json:"Slice,omitempty"`
 	RowIDs     []uint64 `protobuf:"varint,4,rep,packed,name=RowIDs" json:"RowIDs,omitempty"`
 	ColumnIDs  []uint64 `protobuf:"varint,5,rep,packed,name=ColumnIDs" json:"ColumnIDs,omitempty"`
+	RowKeys    []string `protobuf:"bytes,7,rep,name=RowKeys" json:"RowKeys,omitempty"`
+	ColumnKeys []string `protobuf:"bytes,8,rep,name=ColumnKeys" json:"ColumnKeys,omitempty"`
 	Timestamps []int64  `protobuf:"varint,6,rep,packed,name=Timestamps" json:"Timestamps,omitempty"`
 }
 
@@ -458,6 +460,20 @@ func (m *ImportRequest) GetColumnIDs() []uint64 {
 	return nil
 }
 
+func (m *ImportRequest) GetRowKeys() []string {
+	if m != nil {
+		return m.RowKeys
+	}
+	return nil
+}
+
+func (m *ImportRequest) GetColumnKeys() []string {
+	if m != nil {
+		return m.ColumnKeys
+	}
+	return nil
+}
+
 func (m *ImportRequest) GetTimestamps() []int64 {
 	if m != nil {
 		return m.Timestamps
@@ -466,12 +482,13 @@ func (m *ImportRequest) GetTimestamps() []int64 {
 }
 
 type ImportValueRequest struct {
-	Index     string   `protobuf:"bytes,1,opt,name=Index,proto3" json:"Index,omitempty"`
-	Frame     string   `protobuf:"bytes,2,opt,name=Frame,proto3" json:"Frame,omitempty"`
-	Slice     uint64   `protobuf:"varint,3,opt,name=Slice,proto3" json:"Slice,omitempty"`
-	Field     string   `protobuf:"bytes,4,opt,name=Field,proto3" json:"Field,omitempty"`
-	ColumnIDs []uint64 `protobuf:"varint,5,rep,packed,name=ColumnIDs" json:"ColumnIDs,omitempty"`
-	Values    []int64  `protobuf:"varint,6,rep,packed,name=Values" json:"Values,omitempty"`
+	Index      string   `protobuf:"bytes,1,opt,name=Index,proto3" json:"Index,omitempty"`
+	Frame      string   `protobuf:"bytes,2,opt,name=Frame,proto3" json:"Frame,omitempty"`
+	Slice      uint64   `protobuf:"varint,3,opt,name=Slice,proto3" json:"Slice,omitempty"`
+	Field      string   `protobuf:"bytes,4,opt,name=Field,proto3" json:"Field,omitempty"`
+	ColumnIDs  []uint64 `protobuf:"varint,5,rep,packed,name=ColumnIDs" json:"ColumnIDs,omitempty"`
+	ColumnKeys []string `protobuf:"bytes,7,rep,name=ColumnKeys" json:"ColumnKeys,omitempty"`
+	Values     []int64  `protobuf:"varint,6,rep,packed,name=Values" json:"Values,omitempty"`
 }
 
 func (m *ImportValueRequest) Reset()                    { *m = ImportValueRequest{} }
@@ -514,6 +531,13 @@ func (m *ImportValueRequest) GetColumnIDs() []uint64 {
 	return nil
 }
 
+func (m *ImportValueRequest) GetColumnKeys() []string {
+	if m != nil {
+		return m.ColumnKeys
+	}
+	return nil
+}
+
 func (m *ImportValueRequest) GetValues() []int64 {
 	if m != nil {
 		return m.Values
@@ -1101,6 +1125,36 @@ func (m *ImportRequest) MarshalTo(dAtA []byte) (int, error) {
 		i = encodeVarintPublic(dAtA, i, uint64(j11))
 		i += copy(dAtA[i:], dAtA12[:j11])
 	}
+	if len(m.RowKeys) > 0 {
+		for _, s := range m.RowKeys {
+			dAtA[i] = 0x3a
+			i++
+			l = len(s)
+			for l >= 1<<7 {
+				dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
+				l >>= 7
+				i++
+			}
+			dAtA[i] = uint8(l)
+			i++
+			i += copy(dAtA[i:], s)
+		}
+	}
+	if len(m.ColumnKeys) > 0 {
+		for _, s := range m.ColumnKeys {
+			dAtA[i] = 0x42
+			i++
+			l = len(s)
+			for l >= 1<<7 {
+				dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
+				l >>= 7
+				i++
+			}
+			dAtA[i] = uint8(l)
+			i++
+			i += copy(dAtA[i:], s)
+		}
+	}
 	return i, nil
 }
 
@@ -1177,6 +1231,21 @@ func (m *ImportValueRequest) MarshalTo(dAtA []byte) (int, error) {
 		i = encodeVarintPublic(dAtA, i, uint64(j15))
 		i += copy(dAtA[i:], dAtA16[:j15])
 	}
+	if len(m.ColumnKeys) > 0 {
+		for _, s := range m.ColumnKeys {
+			dAtA[i] = 0x3a
+			i++
+			l = len(s)
+			for l >= 1<<7 {
+				dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
+				l >>= 7
+				i++
+			}
+			dAtA[i] = uint8(l)
+			i++
+			i += copy(dAtA[i:], s)
+		}
+	}
 	return i, nil
 }
 
@@ -1447,6 +1516,18 @@ func (m *ImportRequest) Size() (n int) {
 		}
 		n += 1 + sovPublic(uint64(l)) + l
 	}
+	if len(m.RowKeys) > 0 {
+		for _, s := range m.RowKeys {
+			l = len(s)
+			n += 1 + l + sovPublic(uint64(l))
+		}
+	}
+	if len(m.ColumnKeys) > 0 {
+		for _, s := range m.ColumnKeys {
+			l = len(s)
+			n += 1 + l + sovPublic(uint64(l))
+		}
+	}
 	return n
 }
 
@@ -1482,6 +1563,12 @@ func (m *ImportValueRequest) Size() (n int) {
 		}
 		n += 1 + sovPublic(uint64(l)) + l
 	}
+	if len(m.ColumnKeys) > 0 {
+		for _, s := range m.ColumnKeys {
+			l = len(s)
+			n += 1 + l + sovPublic(uint64(l))
+		}
+	}
 	return n
 }
 
@@ -3235,6 +3322,64 @@ func (m *ImportRequest) Unmarshal(dAtA []byte) error {
 			} else {
 				return fmt.Errorf("proto: wrong wireType = %d for field Timestamps", wireType)
 			}
+		case 7:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field RowKeys", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPublic
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPublic
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.RowKeys = append(m.RowKeys, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
+		case 8:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ColumnKeys", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPublic
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPublic
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ColumnKeys = append(m.ColumnKeys, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipPublic(dAtA[iNdEx:])
@@ -3515,6 +3660,35 @@ func (m *ImportValueRequest) Unmarshal(dAtA []byte) error {
 			} else {
 				return fmt.Errorf("proto: wrong wireType = %d for field Values", wireType)
 			}
+		case 7:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ColumnKeys", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPublic
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPublic
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ColumnKeys = append(m.ColumnKeys, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipPublic(dAtA[iNdEx:])
@@ -3644,48 +3818,50 @@ var (
 func init() { proto.RegisterFile("public.proto", fileDescriptorPublic) }
 
 var fileDescriptorPublic = []byte{
-	// 678 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x54, 0xcb, 0x6e, 0xd3, 0x40,
-	0x14, 0x65, 0x62, 0xe7, 0x75, 0x93, 0x54, 0xd5, 0x08, 0x8a, 0x85, 0x50, 0x64, 0x59, 0x2c, 0xbc,
-	0x4a, 0xa5, 0xb0, 0x07, 0x91, 0x3e, 0xa4, 0xa8, 0xa2, 0x82, 0x9b, 0x52, 0xd6, 0x6e, 0x3b, 0x2a,
-	0x96, 0xfc, 0xc2, 0x1e, 0x8b, 0xe6, 0x3b, 0xd8, 0xb0, 0x66, 0x03, 0x1f, 0xc1, 0x07, 0xc0, 0x8e,
-	0x4f, 0x40, 0xe1, 0x47, 0xd0, 0x9d, 0xf1, 0xd8, 0x0e, 0x95, 0x80, 0x05, 0xbb, 0x39, 0xe7, 0xcc,
-	0x5c, 0xdf, 0xc7, 0xb9, 0x86, 0x71, 0x56, 0x5e, 0x44, 0xe1, 0xe5, 0x2c, 0xcb, 0x53, 0x99, 0xf2,
-	0x41, 0x98, 0x48, 0x91, 0x27, 0x41, 0xe4, 0x9d, 0x43, 0x6f, 0x11, 0xca, 0x38, 0xc8, 0x38, 0x07,
-	0x7b, 0x11, 0xca, 0xc2, 0x61, 0xae, 0xe5, 0xdb, 0xa8, 0xce, 0xfc, 0x11, 0x74, 0x9f, 0x49, 0x99,
-	0x17, 0x4e, 0xc7, 0xb5, 0xfc, 0xd1, 0x7c, 0x67, 0x66, 0xde, 0xcd, 0x88, 0x46, 0x2d, 0xd2, 0xcb,
-	0x13, 0xb1, 0x2e, 0x1c, 0xcb, 0xb5, 0xfc, 0x21, 0xaa, 0xb3, 0xf7, 0x04, 0xec, 0x17, 0x41, 0x98,
-	0xf3, 0x1d, 0xe8, 0x2c, 0x0f, 0x1d, 0xe6, 0x32, 0xdf, 0xc6, 0xce, 0xf2, 0x90, 0xdf, 0x85, 0xee,
-	0x41, 0x5a, 0x26, 0xd2, 0xe9, 0x28, 0x4a, 0x03, 0xbe, 0x0b, 0xd6, 0x89, 0x58, 0x3b, 0x96, 0xcb,
-	0xfc, 0x21, 0xd2, 0xd1, 0x9b, 0xc3, 0x60, 0x55, 0xc6, 0xb5, 0xba, 0x2a, 0x63, 0x15, 0xc4, 0x42,
-	0x3a, 0x6e, 0x47, 0xb1, 0xaa, 0x28, 0xde, 0x2b, 0xb0, 0x16, 0xa1, 0x24, 0x11, 0xd3, 0x77, 0xf5,
-	0x57, 0x35, 0xe0, 0x0f, 0x60, 0x70, 0x90, 0x46, 0x65, 0x9c, 0x2c, 0x0f, 0xab, 0x6f, 0xd7, 0x98,
-	0x3f, 0x84, 0xe1, 0x59, 0x18, 0x8b, 0x42, 0x06, 0x71, 0xa6, 0x92, 0xb0, 0xb0, 0x21, 0xbc, 0xd7,
-	0x30, 0xd1, 0x37, 0xa9, 0xda, 0x95, 0x90, 0xb7, 0x6a, 0xfa, 0xb7, 0x2e, 0xdd, 0xae, 0xf1, 0x33,
-	0x03, 0x9b, 0x34, 0x23, 0xb1, 0x5a, 0xa2, 0x96, 0x9e, 0xad, 0x33, 0x51, 0x65, 0xaa, 0xce, 0xdc,
-	0x85, 0xd1, 0x4a, 0xe6, 0x61, 0x72, 0x7d, 0x1e, 0x44, 0xa5, 0xa8, 0x02, 0xb5, 0x29, 0xaa, 0x71,
-	0x99, 0x48, 0x2d, 0xdb, 0xaa, 0x8c, 0x1a, 0x53, 0x8d, 0x8b, 0x34, 0x8d, 0xb4, 0xd8, 0x75, 0x99,
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+	0x00,
 }
diff --git a/internal/public.proto b/internal/public.proto
index e5fc833fd..5fa40cfab 100644
--- a/internal/public.proto
+++ b/internal/public.proto
@@ -41,7 +41,7 @@ message Attr {
 }
 
 message AttrMap {
-    repeated Attr Attrs = 1;
+	repeated Attr Attrs = 1;
 }
 
 message QueryRequest {
@@ -74,6 +74,8 @@ message ImportRequest {
 	uint64 Slice = 3;
 	repeated uint64 RowIDs = 4;
 	repeated uint64 ColumnIDs = 5;
+	repeated string RowKeys = 7;
+	repeated string ColumnKeys = 8;
 	repeated int64 Timestamps = 6;
 }
 
@@ -83,5 +85,6 @@ message ImportValueRequest {
 	uint64 Slice = 3;
 	string Field = 4;
 	repeated uint64 ColumnIDs = 5;
+	repeated string ColumnKeys = 7;
 	repeated int64 Values = 6;
 }