diff --git a/cmd/components/data_coord.go b/cmd/components/data_coord.go
index f4c53277ad..bf9284ecf8 100644
--- a/cmd/components/data_coord.go
+++ b/cmd/components/data_coord.go
@@ -14,18 +14,18 @@ package components
 import (
 	"context"
 
-	grpcdataserviceclient "github.com/milvus-io/milvus/internal/distributed/dataservice"
+	grpcdatacoordclient "github.com/milvus-io/milvus/internal/distributed/datacoord"
 	"github.com/milvus-io/milvus/internal/msgstream"
 )
 
 type DataCoord struct {
 	ctx context.Context
-	svr *grpcdataserviceclient.Server
+	svr *grpcdatacoordclient.Server
 }
 
 // NewDataCoord creates a new DataCoord
 func NewDataCoord(ctx context.Context, factory msgstream.Factory) (*DataCoord, error) {
-	s, err := grpcdataserviceclient.NewServer(ctx, factory)
+	s, err := grpcdatacoordclient.NewServer(ctx, factory)
 	if err != nil {
 		return nil, err
 	}
diff --git a/cmd/roles/roles.go b/cmd/roles/roles.go
index 52e5a70878..a14debdf76 100644
--- a/cmd/roles/roles.go
+++ b/cmd/roles/roles.go
@@ -22,8 +22,8 @@ import (
 	"syscall"
 
 	"github.com/milvus-io/milvus/cmd/components"
+	"github.com/milvus-io/milvus/internal/datacoord"
 	"github.com/milvus-io/milvus/internal/datanode"
-	"github.com/milvus-io/milvus/internal/dataservice"
 	"github.com/milvus-io/milvus/internal/indexcoord"
 	"github.com/milvus-io/milvus/internal/indexnode"
 	"github.com/milvus-io/milvus/internal/log"
@@ -194,10 +194,10 @@ func (mr *MilvusRoles) runDataCoord(ctx context.Context, localMsg bool) *compone
 
 	wg.Add(1)
 	go func() {
-		dataservice.Params.Init()
+		datacoord.Params.Init()
 
 		if !localMsg {
-			logutil.SetupLogger(&dataservice.Params.Log)
+			logutil.SetupLogger(&datacoord.Params.Log)
 			defer log.Sync()
 		}
 
diff --git a/docs/developer_guides/chap09_data_service.md b/docs/developer_guides/chap09_data_coord.md
similarity index 100%
rename from docs/developer_guides/chap09_data_service.md
rename to docs/developer_guides/chap09_data_coord.md
diff --git a/internal/dataservice/OWNERS b/internal/datacoord/OWNERS
similarity index 100%
rename from internal/dataservice/OWNERS
rename to internal/datacoord/OWNERS
diff --git a/internal/dataservice/allocator.go b/internal/datacoord/allocator.go
similarity index 99%
rename from internal/dataservice/allocator.go
rename to internal/datacoord/allocator.go
index 87ebfadb1a..2fd82ce3a9 100644
--- a/internal/dataservice/allocator.go
+++ b/internal/datacoord/allocator.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/allocator_test.go b/internal/datacoord/allocator_test.go
similarity index 98%
rename from internal/dataservice/allocator_test.go
rename to internal/datacoord/allocator_test.go
index 23e1e6b2a6..e30529d6ed 100644
--- a/internal/dataservice/allocator_test.go
+++ b/internal/datacoord/allocator_test.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"testing"
diff --git a/internal/dataservice/binlog_helper.go b/internal/datacoord/binlog_helper.go
similarity index 99%
rename from internal/dataservice/binlog_helper.go
rename to internal/datacoord/binlog_helper.go
index 7708a0203e..9f92fd2454 100644
--- a/internal/dataservice/binlog_helper.go
+++ b/internal/datacoord/binlog_helper.go
@@ -1,4 +1,4 @@
-package dataservice
+package datacoord
 
 import (
 	"errors"
diff --git a/internal/dataservice/cluster.go b/internal/datacoord/cluster.go
similarity index 99%
rename from internal/dataservice/cluster.go
rename to internal/datacoord/cluster.go
index de73cade05..52df6a5790 100644
--- a/internal/dataservice/cluster.go
+++ b/internal/datacoord/cluster.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"fmt"
diff --git a/internal/dataservice/cluster_data_manager.go b/internal/datacoord/cluster_data_manager.go
similarity index 99%
rename from internal/dataservice/cluster_data_manager.go
rename to internal/datacoord/cluster_data_manager.go
index 65eedf1558..5952215e97 100644
--- a/internal/dataservice/cluster_data_manager.go
+++ b/internal/datacoord/cluster_data_manager.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"github.com/golang/protobuf/proto"
diff --git a/internal/dataservice/cluster_session_manager.go b/internal/datacoord/cluster_session_manager.go
similarity index 99%
rename from internal/dataservice/cluster_session_manager.go
rename to internal/datacoord/cluster_session_manager.go
index 046961182a..2fa16441f3 100644
--- a/internal/dataservice/cluster_session_manager.go
+++ b/internal/datacoord/cluster_session_manager.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"sync"
diff --git a/internal/dataservice/cluster_test.go b/internal/datacoord/cluster_test.go
similarity index 99%
rename from internal/dataservice/cluster_test.go
rename to internal/datacoord/cluster_test.go
index 17e6a1fa1f..be3b40d2ce 100644
--- a/internal/dataservice/cluster_test.go
+++ b/internal/datacoord/cluster_test.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/datanode_helper.go b/internal/datacoord/datanode_helper.go
similarity index 98%
rename from internal/dataservice/datanode_helper.go
rename to internal/datacoord/datanode_helper.go
index 118b5c7378..729df3ece5 100644
--- a/internal/dataservice/datanode_helper.go
+++ b/internal/datacoord/datanode_helper.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"github.com/milvus-io/milvus/internal/proto/datapb"
diff --git a/internal/dataservice/flush_monitor.go b/internal/datacoord/flush_monitor.go
similarity index 99%
rename from internal/dataservice/flush_monitor.go
rename to internal/datacoord/flush_monitor.go
index 6fbc3d0aa5..5e3fa4ceae 100644
--- a/internal/dataservice/flush_monitor.go
+++ b/internal/datacoord/flush_monitor.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"sort"
diff --git a/internal/dataservice/flush_monitor_test.go b/internal/datacoord/flush_monitor_test.go
similarity index 99%
rename from internal/dataservice/flush_monitor_test.go
rename to internal/datacoord/flush_monitor_test.go
index 247d482259..91299fa2eb 100644
--- a/internal/dataservice/flush_monitor_test.go
+++ b/internal/datacoord/flush_monitor_test.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"testing"
diff --git a/internal/dataservice/grpc_services.go b/internal/datacoord/grpc_services.go
similarity index 99%
rename from internal/dataservice/grpc_services.go
rename to internal/datacoord/grpc_services.go
index 8b2f030f4e..b68734803f 100644
--- a/internal/dataservice/grpc_services.go
+++ b/internal/datacoord/grpc_services.go
@@ -1,4 +1,4 @@
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/meta.go b/internal/datacoord/meta.go
similarity index 99%
rename from internal/dataservice/meta.go
rename to internal/datacoord/meta.go
index e9650245fb..6081a2d820 100644
--- a/internal/dataservice/meta.go
+++ b/internal/datacoord/meta.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"fmt"
diff --git a/internal/dataservice/meta_test.go b/internal/datacoord/meta_test.go
similarity index 99%
rename from internal/dataservice/meta_test.go
rename to internal/datacoord/meta_test.go
index 92d1edde8e..65e7b6dcd9 100644
--- a/internal/dataservice/meta_test.go
+++ b/internal/datacoord/meta_test.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"testing"
diff --git a/internal/dataservice/mock_test.go b/internal/datacoord/mock_test.go
similarity index 99%
rename from internal/dataservice/mock_test.go
rename to internal/datacoord/mock_test.go
index 8fad4ca14e..ec1b092c7b 100644
--- a/internal/dataservice/mock_test.go
+++ b/internal/datacoord/mock_test.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/param.go b/internal/datacoord/param.go
similarity index 99%
rename from internal/dataservice/param.go
rename to internal/datacoord/param.go
index 238ebde08a..adf67e50bd 100644
--- a/internal/dataservice/param.go
+++ b/internal/datacoord/param.go
@@ -7,7 +7,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"path"
diff --git a/internal/dataservice/policy.go b/internal/datacoord/policy.go
similarity index 99%
rename from internal/dataservice/policy.go
rename to internal/datacoord/policy.go
index 9cf8893473..b27451e0f4 100644
--- a/internal/dataservice/policy.go
+++ b/internal/datacoord/policy.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"crypto/rand"
diff --git a/internal/dataservice/policy_test.go b/internal/datacoord/policy_test.go
similarity index 99%
rename from internal/dataservice/policy_test.go
rename to internal/datacoord/policy_test.go
index 3758515aaa..fa0ad6c35a 100644
--- a/internal/dataservice/policy_test.go
+++ b/internal/datacoord/policy_test.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"testing"
diff --git a/internal/dataservice/segment_allocation_policy.go b/internal/datacoord/segment_allocation_policy.go
similarity index 99%
rename from internal/dataservice/segment_allocation_policy.go
rename to internal/datacoord/segment_allocation_policy.go
index 3f6f4aa616..26bf75fa93 100644
--- a/internal/dataservice/segment_allocation_policy.go
+++ b/internal/datacoord/segment_allocation_policy.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"sort"
diff --git a/internal/dataservice/segment_manager.go b/internal/datacoord/segment_manager.go
similarity index 99%
rename from internal/dataservice/segment_manager.go
rename to internal/datacoord/segment_manager.go
index 28e136da32..b609c3c84f 100644
--- a/internal/dataservice/segment_manager.go
+++ b/internal/datacoord/segment_manager.go
@@ -8,7 +8,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/segment_manager_test.go b/internal/datacoord/segment_manager_test.go
similarity index 99%
rename from internal/dataservice/segment_manager_test.go
rename to internal/datacoord/segment_manager_test.go
index d379268f76..f7608fbba1 100644
--- a/internal/dataservice/segment_manager_test.go
+++ b/internal/datacoord/segment_manager_test.go
@@ -7,7 +7,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/server.go b/internal/datacoord/server.go
similarity index 99%
rename from internal/dataservice/server.go
rename to internal/datacoord/server.go
index 0d6a2f5a42..ff739e214d 100644
--- a/internal/dataservice/server.go
+++ b/internal/datacoord/server.go
@@ -7,7 +7,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/server_test.go b/internal/datacoord/server_test.go
similarity index 99%
rename from internal/dataservice/server_test.go
rename to internal/datacoord/server_test.go
index 22ad7901e0..060968afb6 100644
--- a/internal/dataservice/server_test.go
+++ b/internal/datacoord/server_test.go
@@ -7,7 +7,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"context"
diff --git a/internal/dataservice/stream_pos.go b/internal/datacoord/stream_pos.go
similarity index 98%
rename from internal/dataservice/stream_pos.go
rename to internal/datacoord/stream_pos.go
index 49ccf0ab9b..8a242c442e 100644
--- a/internal/dataservice/stream_pos.go
+++ b/internal/datacoord/stream_pos.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package dataservice
+package datacoord
 
 import (
 	"errors"
diff --git a/internal/dataservice/util.go b/internal/datacoord/util.go
similarity index 98%
rename from internal/dataservice/util.go
rename to internal/datacoord/util.go
index 996ebd9bce..be3e581331 100644
--- a/internal/dataservice/util.go
+++ b/internal/datacoord/util.go
@@ -8,7 +8,7 @@
 // Unless required by applicable law or agreed to in writing, software distributed under the License
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
-package dataservice
+package datacoord
 
 import (
 	"errors"
diff --git a/internal/distributed/dataservice/client/client.go b/internal/distributed/datacoord/client/client.go
similarity index 99%
rename from internal/distributed/dataservice/client/client.go
rename to internal/distributed/datacoord/client/client.go
index fb37c5aaca..895b41ae7e 100644
--- a/internal/distributed/dataservice/client/client.go
+++ b/internal/distributed/datacoord/client/client.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package grpcdataserviceclient
+package grpcdatacoordclient
 
 import (
 	"context"
diff --git a/internal/distributed/dataservice/dataservice_test.go b/internal/distributed/datacoord/datacoord_test.go
similarity index 99%
rename from internal/distributed/dataservice/dataservice_test.go
rename to internal/distributed/datacoord/datacoord_test.go
index 33f0784873..73fa274eb2 100644
--- a/internal/distributed/dataservice/dataservice_test.go
+++ b/internal/distributed/datacoord/datacoord_test.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package grpcdataserviceclient
+package grpcdatacoordclient
 
 import (
 	"context"
diff --git a/internal/distributed/dataservice/paramtable.go b/internal/distributed/datacoord/paramtable.go
similarity index 97%
rename from internal/distributed/dataservice/paramtable.go
rename to internal/distributed/datacoord/paramtable.go
index 1a944d78f8..818dba2c20 100644
--- a/internal/distributed/dataservice/paramtable.go
+++ b/internal/distributed/datacoord/paramtable.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package grpcdataserviceclient
+package grpcdatacoordclient
 
 import (
 	"sync"
diff --git a/internal/distributed/dataservice/paramtable_test.go b/internal/distributed/datacoord/paramtable_test.go
similarity index 92%
rename from internal/distributed/dataservice/paramtable_test.go
rename to internal/distributed/datacoord/paramtable_test.go
index 269bc70552..b0223dd775 100644
--- a/internal/distributed/dataservice/paramtable_test.go
+++ b/internal/distributed/datacoord/paramtable_test.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package grpcdataserviceclient
+package grpcdatacoordclient
 
 import (
 	"testing"
@@ -21,7 +21,7 @@ func TestParamTable(t *testing.T) {
 	Params.Init()
 
 	assert.NotEqual(t, Params.Port, 0)
-	t.Logf("DataService Port:%d", Params.Port)
+	t.Logf("DataCoord Port:%d", Params.Port)
 
 	assert.NotEqual(t, Params.MasterAddress, "")
 	t.Logf("MasterAddress:%s", Params.MasterAddress)
diff --git a/internal/distributed/dataservice/service.go b/internal/distributed/datacoord/service.go
similarity index 96%
rename from internal/distributed/dataservice/service.go
rename to internal/distributed/datacoord/service.go
index d0ac815e37..62543268b2 100644
--- a/internal/distributed/dataservice/service.go
+++ b/internal/distributed/datacoord/service.go
@@ -9,7 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
-package grpcdataserviceclient
+package grpcdatacoordclient
 
 import (
 	"context"
@@ -27,7 +27,7 @@ import (
 
 	grpc_opentracing "github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing"
 	grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
-	"github.com/milvus-io/milvus/internal/dataservice"
+	"github.com/milvus-io/milvus/internal/datacoord"
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/msgstream"
 	"github.com/milvus-io/milvus/internal/types"
@@ -41,7 +41,7 @@ import (
 )
 
 type Server struct {
-	dataCoord *dataservice.Server
+	dataCoord *datacoord.Server
 	ctx       context.Context
 	cancel    context.CancelFunc
 
@@ -64,7 +64,7 @@ func NewServer(ctx context.Context, factory msgstream.Factory) (*Server, error)
 		cancel:      cancel,
 		grpcErrChan: make(chan error),
 	}
-	s.dataCoord, err = dataservice.CreateServer(s.ctx, factory)
+	s.dataCoord, err = datacoord.CreateServer(s.ctx, factory)
 	if err != nil {
 		return nil, err
 	}
@@ -78,9 +78,9 @@ func (s *Server) init() error {
 	closer := trace.InitTracing("data_service")
 	s.closer = closer
 
-	dataservice.Params.Init()
-	dataservice.Params.IP = Params.IP
-	dataservice.Params.Port = Params.Port
+	datacoord.Params.Init()
+	datacoord.Params.IP = Params.IP
+	datacoord.Params.Port = Params.Port
 
 	err := s.dataCoord.Register()
 	if err != nil {
diff --git a/internal/distributed/datanode/service.go b/internal/distributed/datanode/service.go
index 0c4a1170a7..c785aa5642 100644
--- a/internal/distributed/datanode/service.go
+++ b/internal/distributed/datanode/service.go
@@ -26,7 +26,7 @@ import (
 	"google.golang.org/grpc"
 
 	dn "github.com/milvus-io/milvus/internal/datanode"
-	dsc "github.com/milvus-io/milvus/internal/distributed/dataservice/client"
+	dsc "github.com/milvus-io/milvus/internal/distributed/datacoord/client"
 	rcc "github.com/milvus-io/milvus/internal/distributed/rootcoord/client"
 
 	grpc_opentracing "github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing"
diff --git a/internal/distributed/proxynode/service.go b/internal/distributed/proxynode/service.go
index 012d63bf36..0e30e9e85b 100644
--- a/internal/distributed/proxynode/service.go
+++ b/internal/distributed/proxynode/service.go
@@ -24,7 +24,7 @@ import (
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
 
-	grpcdataserviceclient "github.com/milvus-io/milvus/internal/distributed/dataservice/client"
+	grpcdatacoordclient "github.com/milvus-io/milvus/internal/distributed/datacoord/client"
 	grpcindexcoordclient "github.com/milvus-io/milvus/internal/distributed/indexcoord/client"
 	grpcqueryserviceclient "github.com/milvus-io/milvus/internal/distributed/queryservice/client"
 	rcc "github.com/milvus-io/milvus/internal/distributed/rootcoord/client"
@@ -55,7 +55,7 @@ type Server struct {
 	grpcErrChan chan error
 
 	rootCoordClient    *rcc.GrpcClient
-	dataCoordClient    *grpcdataserviceclient.Client
+	dataCoordClient    *grpcdatacoordclient.Client
 	queryServiceClient *grpcqueryserviceclient.Client
 	indexCoordClient   *grpcindexcoordclient.Client
 
@@ -190,7 +190,7 @@ func (s *Server) init() error {
 
 	dataCoordAddr := Params.DataCoordAddress
 	log.Debug("ProxyNode", zap.String("data service address", dataCoordAddr))
-	s.dataCoordClient = grpcdataserviceclient.NewClient(proxynode.Params.MetaRootPath, proxynode.Params.EtcdEndpoints, timeout)
+	s.dataCoordClient = grpcdatacoordclient.NewClient(proxynode.Params.MetaRootPath, proxynode.Params.EtcdEndpoints, timeout)
 	err = s.dataCoordClient.Init()
 	if err != nil {
 		log.Debug("ProxyNode dataCoordClient init failed ", zap.Error(err))
diff --git a/internal/distributed/querynode/service.go b/internal/distributed/querynode/service.go
index 36ff939500..6562eea7c1 100644
--- a/internal/distributed/querynode/service.go
+++ b/internal/distributed/querynode/service.go
@@ -29,7 +29,7 @@ import (
 	"google.golang.org/grpc"
 
 	grpc_opentracing "github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing"
-	dsc "github.com/milvus-io/milvus/internal/distributed/dataservice/client"
+	dsc "github.com/milvus-io/milvus/internal/distributed/datacoord/client"
 	isc "github.com/milvus-io/milvus/internal/distributed/indexcoord/client"
 	qsc "github.com/milvus-io/milvus/internal/distributed/queryservice/client"
 	rcc "github.com/milvus-io/milvus/internal/distributed/rootcoord/client"
diff --git a/internal/distributed/queryservice/service.go b/internal/distributed/queryservice/service.go
index 1d1fba2ffa..bac529650a 100644
--- a/internal/distributed/queryservice/service.go
+++ b/internal/distributed/queryservice/service.go
@@ -21,7 +21,7 @@ import (
 	"time"
 
 	grpc_opentracing "github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing"
-	dsc "github.com/milvus-io/milvus/internal/distributed/dataservice/client"
+	dsc "github.com/milvus-io/milvus/internal/distributed/datacoord/client"
 	rcc "github.com/milvus-io/milvus/internal/distributed/rootcoord/client"
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/msgstream"
diff --git a/internal/distributed/rootcoord/service.go b/internal/distributed/rootcoord/service.go
index 77f5199b71..4b8a0e9af2 100644
--- a/internal/distributed/rootcoord/service.go
+++ b/internal/distributed/rootcoord/service.go
@@ -24,7 +24,7 @@ import (
 	"google.golang.org/grpc"
 
 	grpc_opentracing "github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing"
-	dsc "github.com/milvus-io/milvus/internal/distributed/dataservice/client"
+	dsc "github.com/milvus-io/milvus/internal/distributed/datacoord/client"
 	isc "github.com/milvus-io/milvus/internal/distributed/indexcoord/client"
 	pnc "github.com/milvus-io/milvus/internal/distributed/proxynode/client"
 	qsc "github.com/milvus-io/milvus/internal/distributed/queryservice/client"
diff --git a/internal/metrics/metrics.go b/internal/metrics/metrics.go
index 0fd431b64f..6bc1fc2d76 100644
--- a/internal/metrics/metrics.go
+++ b/internal/metrics/metrics.go
@@ -243,7 +243,7 @@ var (
 	)
 )
 
-//RegisterDataCoord register DataService metrics
+//RegisterDataCoord register DataCoord metrics
 func RegisterDataCoord() {
 	prometheus.Register(DataCoordDataNodeList)
 }
diff --git a/internal/proto/data_service.proto b/internal/proto/data_coord.proto
similarity index 100%
rename from internal/proto/data_service.proto
rename to internal/proto/data_coord.proto
diff --git a/internal/proto/datapb/data_service.pb.go b/internal/proto/datapb/data_coord.pb.go
similarity index 88%
rename from internal/proto/datapb/data_service.pb.go
rename to internal/proto/datapb/data_coord.pb.go
index a419dcc1e5..4fdb2810eb 100644
--- a/internal/proto/datapb/data_service.pb.go
+++ b/internal/proto/datapb/data_coord.pb.go
@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: data_service.proto
+// source: data_coord.proto
 
 package datapb
 
@@ -50,7 +50,7 @@ func (x ChannelWatchState) String() string {
 }
 
 func (ChannelWatchState) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{0}
+	return fileDescriptor_82cd95f524594f49, []int{0}
 }
 
 type FlushRequest struct {
@@ -66,7 +66,7 @@ func (m *FlushRequest) Reset()         { *m = FlushRequest{} }
 func (m *FlushRequest) String() string { return proto.CompactTextString(m) }
 func (*FlushRequest) ProtoMessage()    {}
 func (*FlushRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{0}
+	return fileDescriptor_82cd95f524594f49, []int{0}
 }
 
 func (m *FlushRequest) XXX_Unmarshal(b []byte) error {
@@ -122,7 +122,7 @@ func (m *SegmentIDRequest) Reset()         { *m = SegmentIDRequest{} }
 func (m *SegmentIDRequest) String() string { return proto.CompactTextString(m) }
 func (*SegmentIDRequest) ProtoMessage()    {}
 func (*SegmentIDRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{1}
+	return fileDescriptor_82cd95f524594f49, []int{1}
 }
 
 func (m *SegmentIDRequest) XXX_Unmarshal(b []byte) error {
@@ -184,7 +184,7 @@ func (m *AssignSegmentIDRequest) Reset()         { *m = AssignSegmentIDRequest{}
 func (m *AssignSegmentIDRequest) String() string { return proto.CompactTextString(m) }
 func (*AssignSegmentIDRequest) ProtoMessage()    {}
 func (*AssignSegmentIDRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{2}
+	return fileDescriptor_82cd95f524594f49, []int{2}
 }
 
 func (m *AssignSegmentIDRequest) XXX_Unmarshal(b []byte) error {
@@ -243,7 +243,7 @@ func (m *SegmentIDAssignment) Reset()         { *m = SegmentIDAssignment{} }
 func (m *SegmentIDAssignment) String() string { return proto.CompactTextString(m) }
 func (*SegmentIDAssignment) ProtoMessage()    {}
 func (*SegmentIDAssignment) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{3}
+	return fileDescriptor_82cd95f524594f49, []int{3}
 }
 
 func (m *SegmentIDAssignment) XXX_Unmarshal(b []byte) error {
@@ -325,7 +325,7 @@ func (m *AssignSegmentIDResponse) Reset()         { *m = AssignSegmentIDResponse
 func (m *AssignSegmentIDResponse) String() string { return proto.CompactTextString(m) }
 func (*AssignSegmentIDResponse) ProtoMessage()    {}
 func (*AssignSegmentIDResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{4}
+	return fileDescriptor_82cd95f524594f49, []int{4}
 }
 
 func (m *AssignSegmentIDResponse) XXX_Unmarshal(b []byte) error {
@@ -372,7 +372,7 @@ func (m *GetSegmentStatesRequest) Reset()         { *m = GetSegmentStatesRequest
 func (m *GetSegmentStatesRequest) String() string { return proto.CompactTextString(m) }
 func (*GetSegmentStatesRequest) ProtoMessage()    {}
 func (*GetSegmentStatesRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{5}
+	return fileDescriptor_82cd95f524594f49, []int{5}
 }
 
 func (m *GetSegmentStatesRequest) XXX_Unmarshal(b []byte) error {
@@ -422,7 +422,7 @@ func (m *SegmentStateInfo) Reset()         { *m = SegmentStateInfo{} }
 func (m *SegmentStateInfo) String() string { return proto.CompactTextString(m) }
 func (*SegmentStateInfo) ProtoMessage()    {}
 func (*SegmentStateInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{6}
+	return fileDescriptor_82cd95f524594f49, []int{6}
 }
 
 func (m *SegmentStateInfo) XXX_Unmarshal(b []byte) error {
@@ -490,7 +490,7 @@ func (m *GetSegmentStatesResponse) Reset()         { *m = GetSegmentStatesRespon
 func (m *GetSegmentStatesResponse) String() string { return proto.CompactTextString(m) }
 func (*GetSegmentStatesResponse) ProtoMessage()    {}
 func (*GetSegmentStatesResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{7}
+	return fileDescriptor_82cd95f524594f49, []int{7}
 }
 
 func (m *GetSegmentStatesResponse) XXX_Unmarshal(b []byte) error {
@@ -537,7 +537,7 @@ func (m *GetSegmentInfoRequest) Reset()         { *m = GetSegmentInfoRequest{} }
 func (m *GetSegmentInfoRequest) String() string { return proto.CompactTextString(m) }
 func (*GetSegmentInfoRequest) ProtoMessage()    {}
 func (*GetSegmentInfoRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{8}
+	return fileDescriptor_82cd95f524594f49, []int{8}
 }
 
 func (m *GetSegmentInfoRequest) XXX_Unmarshal(b []byte) error {
@@ -584,7 +584,7 @@ func (m *GetSegmentInfoResponse) Reset()         { *m = GetSegmentInfoResponse{}
 func (m *GetSegmentInfoResponse) String() string { return proto.CompactTextString(m) }
 func (*GetSegmentInfoResponse) ProtoMessage()    {}
 func (*GetSegmentInfoResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{9}
+	return fileDescriptor_82cd95f524594f49, []int{9}
 }
 
 func (m *GetSegmentInfoResponse) XXX_Unmarshal(b []byte) error {
@@ -631,7 +631,7 @@ func (m *GetInsertBinlogPathsRequest) Reset()         { *m = GetInsertBinlogPath
 func (m *GetInsertBinlogPathsRequest) String() string { return proto.CompactTextString(m) }
 func (*GetInsertBinlogPathsRequest) ProtoMessage()    {}
 func (*GetInsertBinlogPathsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{10}
+	return fileDescriptor_82cd95f524594f49, []int{10}
 }
 
 func (m *GetInsertBinlogPathsRequest) XXX_Unmarshal(b []byte) error {
@@ -679,7 +679,7 @@ func (m *GetInsertBinlogPathsResponse) Reset()         { *m = GetInsertBinlogPat
 func (m *GetInsertBinlogPathsResponse) String() string { return proto.CompactTextString(m) }
 func (*GetInsertBinlogPathsResponse) ProtoMessage()    {}
 func (*GetInsertBinlogPathsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{11}
+	return fileDescriptor_82cd95f524594f49, []int{11}
 }
 
 func (m *GetInsertBinlogPathsResponse) XXX_Unmarshal(b []byte) error {
@@ -734,7 +734,7 @@ func (m *GetCollectionStatisticsRequest) Reset()         { *m = GetCollectionSta
 func (m *GetCollectionStatisticsRequest) String() string { return proto.CompactTextString(m) }
 func (*GetCollectionStatisticsRequest) ProtoMessage()    {}
 func (*GetCollectionStatisticsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{12}
+	return fileDescriptor_82cd95f524594f49, []int{12}
 }
 
 func (m *GetCollectionStatisticsRequest) XXX_Unmarshal(b []byte) error {
@@ -788,7 +788,7 @@ func (m *GetCollectionStatisticsResponse) Reset()         { *m = GetCollectionSt
 func (m *GetCollectionStatisticsResponse) String() string { return proto.CompactTextString(m) }
 func (*GetCollectionStatisticsResponse) ProtoMessage()    {}
 func (*GetCollectionStatisticsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{13}
+	return fileDescriptor_82cd95f524594f49, []int{13}
 }
 
 func (m *GetCollectionStatisticsResponse) XXX_Unmarshal(b []byte) error {
@@ -837,7 +837,7 @@ func (m *GetPartitionStatisticsRequest) Reset()         { *m = GetPartitionStati
 func (m *GetPartitionStatisticsRequest) String() string { return proto.CompactTextString(m) }
 func (*GetPartitionStatisticsRequest) ProtoMessage()    {}
 func (*GetPartitionStatisticsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{14}
+	return fileDescriptor_82cd95f524594f49, []int{14}
 }
 
 func (m *GetPartitionStatisticsRequest) XXX_Unmarshal(b []byte) error {
@@ -898,7 +898,7 @@ func (m *GetPartitionStatisticsResponse) Reset()         { *m = GetPartitionStat
 func (m *GetPartitionStatisticsResponse) String() string { return proto.CompactTextString(m) }
 func (*GetPartitionStatisticsResponse) ProtoMessage()    {}
 func (*GetPartitionStatisticsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{15}
+	return fileDescriptor_82cd95f524594f49, []int{15}
 }
 
 func (m *GetPartitionStatisticsResponse) XXX_Unmarshal(b []byte) error {
@@ -943,7 +943,7 @@ func (m *GetSegmentInfoChannelRequest) Reset()         { *m = GetSegmentInfoChan
 func (m *GetSegmentInfoChannelRequest) String() string { return proto.CompactTextString(m) }
 func (*GetSegmentInfoChannelRequest) ProtoMessage()    {}
 func (*GetSegmentInfoChannelRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{16}
+	return fileDescriptor_82cd95f524594f49, []int{16}
 }
 
 func (m *GetSegmentInfoChannelRequest) XXX_Unmarshal(b []byte) error {
@@ -979,7 +979,7 @@ func (m *VchannelInfo) Reset()         { *m = VchannelInfo{} }
 func (m *VchannelInfo) String() string { return proto.CompactTextString(m) }
 func (*VchannelInfo) ProtoMessage()    {}
 func (*VchannelInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{17}
+	return fileDescriptor_82cd95f524594f49, []int{17}
 }
 
 func (m *VchannelInfo) XXX_Unmarshal(b []byte) error {
@@ -1047,7 +1047,7 @@ func (m *WatchDmChannelsRequest) Reset()         { *m = WatchDmChannelsRequest{}
 func (m *WatchDmChannelsRequest) String() string { return proto.CompactTextString(m) }
 func (*WatchDmChannelsRequest) ProtoMessage()    {}
 func (*WatchDmChannelsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{18}
+	return fileDescriptor_82cd95f524594f49, []int{18}
 }
 
 func (m *WatchDmChannelsRequest) XXX_Unmarshal(b []byte) error {
@@ -1096,7 +1096,7 @@ func (m *FlushSegmentsRequest) Reset()         { *m = FlushSegmentsRequest{} }
 func (m *FlushSegmentsRequest) String() string { return proto.CompactTextString(m) }
 func (*FlushSegmentsRequest) ProtoMessage()    {}
 func (*FlushSegmentsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{19}
+	return fileDescriptor_82cd95f524594f49, []int{19}
 }
 
 func (m *FlushSegmentsRequest) XXX_Unmarshal(b []byte) error {
@@ -1157,7 +1157,7 @@ func (m *SegmentMsg) Reset()         { *m = SegmentMsg{} }
 func (m *SegmentMsg) String() string { return proto.CompactTextString(m) }
 func (*SegmentMsg) ProtoMessage()    {}
 func (*SegmentMsg) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{20}
+	return fileDescriptor_82cd95f524594f49, []int{20}
 }
 
 func (m *SegmentMsg) XXX_Unmarshal(b []byte) error {
@@ -1205,7 +1205,7 @@ func (m *SegmentFieldBinlogMeta) Reset()         { *m = SegmentFieldBinlogMeta{}
 func (m *SegmentFieldBinlogMeta) String() string { return proto.CompactTextString(m) }
 func (*SegmentFieldBinlogMeta) ProtoMessage()    {}
 func (*SegmentFieldBinlogMeta) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{21}
+	return fileDescriptor_82cd95f524594f49, []int{21}
 }
 
 func (m *SegmentFieldBinlogMeta) XXX_Unmarshal(b []byte) error {
@@ -1253,7 +1253,7 @@ func (m *DDLBinlogMeta) Reset()         { *m = DDLBinlogMeta{} }
 func (m *DDLBinlogMeta) String() string { return proto.CompactTextString(m) }
 func (*DDLBinlogMeta) ProtoMessage()    {}
 func (*DDLBinlogMeta) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{22}
+	return fileDescriptor_82cd95f524594f49, []int{22}
 }
 
 func (m *DDLBinlogMeta) XXX_Unmarshal(b []byte) error {
@@ -1300,7 +1300,7 @@ func (m *FieldFlushMeta) Reset()         { *m = FieldFlushMeta{} }
 func (m *FieldFlushMeta) String() string { return proto.CompactTextString(m) }
 func (*FieldFlushMeta) ProtoMessage()    {}
 func (*FieldFlushMeta) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{23}
+	return fileDescriptor_82cd95f524594f49, []int{23}
 }
 
 func (m *FieldFlushMeta) XXX_Unmarshal(b []byte) error {
@@ -1348,7 +1348,7 @@ func (m *SegmentFlushMeta) Reset()         { *m = SegmentFlushMeta{} }
 func (m *SegmentFlushMeta) String() string { return proto.CompactTextString(m) }
 func (*SegmentFlushMeta) ProtoMessage()    {}
 func (*SegmentFlushMeta) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{24}
+	return fileDescriptor_82cd95f524594f49, []int{24}
 }
 
 func (m *SegmentFlushMeta) XXX_Unmarshal(b []byte) error {
@@ -1402,7 +1402,7 @@ func (m *DDLFlushMeta) Reset()         { *m = DDLFlushMeta{} }
 func (m *DDLFlushMeta) String() string { return proto.CompactTextString(m) }
 func (*DDLFlushMeta) ProtoMessage()    {}
 func (*DDLFlushMeta) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{25}
+	return fileDescriptor_82cd95f524594f49, []int{25}
 }
 
 func (m *DDLFlushMeta) XXX_Unmarshal(b []byte) error {
@@ -1450,7 +1450,7 @@ func (m *CollectionInfo) Reset()         { *m = CollectionInfo{} }
 func (m *CollectionInfo) String() string { return proto.CompactTextString(m) }
 func (*CollectionInfo) ProtoMessage()    {}
 func (*CollectionInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{26}
+	return fileDescriptor_82cd95f524594f49, []int{26}
 }
 
 func (m *CollectionInfo) XXX_Unmarshal(b []byte) error {
@@ -1512,7 +1512,7 @@ func (m *SegmentInfo) Reset()         { *m = SegmentInfo{} }
 func (m *SegmentInfo) String() string { return proto.CompactTextString(m) }
 func (*SegmentInfo) ProtoMessage()    {}
 func (*SegmentInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{27}
+	return fileDescriptor_82cd95f524594f49, []int{27}
 }
 
 func (m *SegmentInfo) XXX_Unmarshal(b []byte) error {
@@ -1615,7 +1615,7 @@ func (m *ID2PathList) Reset()         { *m = ID2PathList{} }
 func (m *ID2PathList) String() string { return proto.CompactTextString(m) }
 func (*ID2PathList) ProtoMessage()    {}
 func (*ID2PathList) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{28}
+	return fileDescriptor_82cd95f524594f49, []int{28}
 }
 
 func (m *ID2PathList) XXX_Unmarshal(b []byte) error {
@@ -1662,7 +1662,7 @@ func (m *SegmentStartPosition) Reset()         { *m = SegmentStartPosition{} }
 func (m *SegmentStartPosition) String() string { return proto.CompactTextString(m) }
 func (*SegmentStartPosition) ProtoMessage()    {}
 func (*SegmentStartPosition) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{29}
+	return fileDescriptor_82cd95f524594f49, []int{29}
 }
 
 func (m *SegmentStartPosition) XXX_Unmarshal(b []byte) error {
@@ -1714,7 +1714,7 @@ func (m *SaveBinlogPathsRequest) Reset()         { *m = SaveBinlogPathsRequest{}
 func (m *SaveBinlogPathsRequest) String() string { return proto.CompactTextString(m) }
 func (*SaveBinlogPathsRequest) ProtoMessage()    {}
 func (*SaveBinlogPathsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{30}
+	return fileDescriptor_82cd95f524594f49, []int{30}
 }
 
 func (m *SaveBinlogPathsRequest) XXX_Unmarshal(b []byte) error {
@@ -1797,7 +1797,7 @@ func (m *CheckPoint) Reset()         { *m = CheckPoint{} }
 func (m *CheckPoint) String() string { return proto.CompactTextString(m) }
 func (*CheckPoint) ProtoMessage()    {}
 func (*CheckPoint) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{31}
+	return fileDescriptor_82cd95f524594f49, []int{31}
 }
 
 func (m *CheckPoint) XXX_Unmarshal(b []byte) error {
@@ -1852,7 +1852,7 @@ func (m *DataNodeTtMsg) Reset()         { *m = DataNodeTtMsg{} }
 func (m *DataNodeTtMsg) String() string { return proto.CompactTextString(m) }
 func (*DataNodeTtMsg) ProtoMessage()    {}
 func (*DataNodeTtMsg) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{32}
+	return fileDescriptor_82cd95f524594f49, []int{32}
 }
 
 func (m *DataNodeTtMsg) XXX_Unmarshal(b []byte) error {
@@ -1907,7 +1907,7 @@ func (m *ChannelStatus) Reset()         { *m = ChannelStatus{} }
 func (m *ChannelStatus) String() string { return proto.CompactTextString(m) }
 func (*ChannelStatus) ProtoMessage()    {}
 func (*ChannelStatus) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{33}
+	return fileDescriptor_82cd95f524594f49, []int{33}
 }
 
 func (m *ChannelStatus) XXX_Unmarshal(b []byte) error {
@@ -1962,7 +1962,7 @@ func (m *DataNodeInfo) Reset()         { *m = DataNodeInfo{} }
 func (m *DataNodeInfo) String() string { return proto.CompactTextString(m) }
 func (*DataNodeInfo) ProtoMessage()    {}
 func (*DataNodeInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{34}
+	return fileDescriptor_82cd95f524594f49, []int{34}
 }
 
 func (m *DataNodeInfo) XXX_Unmarshal(b []byte) error {
@@ -2016,7 +2016,7 @@ func (m *SegmentBinlogs) Reset()         { *m = SegmentBinlogs{} }
 func (m *SegmentBinlogs) String() string { return proto.CompactTextString(m) }
 func (*SegmentBinlogs) ProtoMessage()    {}
 func (*SegmentBinlogs) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{35}
+	return fileDescriptor_82cd95f524594f49, []int{35}
 }
 
 func (m *SegmentBinlogs) XXX_Unmarshal(b []byte) error {
@@ -2063,7 +2063,7 @@ func (m *FieldBinlog) Reset()         { *m = FieldBinlog{} }
 func (m *FieldBinlog) String() string { return proto.CompactTextString(m) }
 func (*FieldBinlog) ProtoMessage()    {}
 func (*FieldBinlog) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{36}
+	return fileDescriptor_82cd95f524594f49, []int{36}
 }
 
 func (m *FieldBinlog) XXX_Unmarshal(b []byte) error {
@@ -2111,7 +2111,7 @@ func (m *GetRecoveryInfoResponse) Reset()         { *m = GetRecoveryInfoResponse
 func (m *GetRecoveryInfoResponse) String() string { return proto.CompactTextString(m) }
 func (*GetRecoveryInfoResponse) ProtoMessage()    {}
 func (*GetRecoveryInfoResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{37}
+	return fileDescriptor_82cd95f524594f49, []int{37}
 }
 
 func (m *GetRecoveryInfoResponse) XXX_Unmarshal(b []byte) error {
@@ -2166,7 +2166,7 @@ func (m *GetRecoveryInfoRequest) Reset()         { *m = GetRecoveryInfoRequest{}
 func (m *GetRecoveryInfoRequest) String() string { return proto.CompactTextString(m) }
 func (*GetRecoveryInfoRequest) ProtoMessage()    {}
 func (*GetRecoveryInfoRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3385cd32ad6cfe64, []int{38}
+	return fileDescriptor_82cd95f524594f49, []int{38}
 }
 
 func (m *GetRecoveryInfoRequest) XXX_Unmarshal(b []byte) error {
@@ -2251,132 +2251,132 @@ func init() {
 	proto.RegisterType((*GetRecoveryInfoRequest)(nil), "milvus.proto.data.GetRecoveryInfoRequest")
 }
 
-func init() { proto.RegisterFile("data_service.proto", fileDescriptor_3385cd32ad6cfe64) }
+func init() { proto.RegisterFile("data_coord.proto", fileDescriptor_82cd95f524594f49) }
 
-var fileDescriptor_3385cd32ad6cfe64 = []byte{
-	// 1943 bytes of a gzipped FileDescriptorProto
+var fileDescriptor_82cd95f524594f49 = []byte{
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+	0x9f, 0xe3, 0x8d, 0x1f, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -2888,7 +2888,7 @@ var _DataCoord_serviceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "data_service.proto",
+	Metadata: "data_coord.proto",
 }
 
 // DataNodeClient is the client API for DataNode service.
@@ -3068,5 +3068,5 @@ var _DataNode_serviceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "data_service.proto",
+	Metadata: "data_coord.proto",
 }
diff --git a/internal/proto/query_service.proto b/internal/proto/query_service.proto
index 8a35ddd1a6..2efccd4071 100644
--- a/internal/proto/query_service.proto
+++ b/internal/proto/query_service.proto
@@ -8,7 +8,7 @@ import "common.proto";
 import "milvus.proto";
 import "internal.proto";
 import "schema.proto";
-import "data_service.proto";
+import "data_coord.proto";
 
 service QueryService {
   rpc GetComponentStates(internal.GetComponentStatesRequest) returns (internal.ComponentStates) {}
@@ -292,4 +292,4 @@ message LoadBalanceRequest {
   common.MsgBase base = 1;
   repeated int64 source_nodeIDs = 2;
   TriggerCondition balance_reason = 3;
-}
\ No newline at end of file
+}
diff --git a/internal/proto/querypb/query_service.pb.go b/internal/proto/querypb/query_service.pb.go
index 4bda52587a..82650b2e1f 100644
--- a/internal/proto/querypb/query_service.pb.go
+++ b/internal/proto/querypb/query_service.pb.go
@@ -2027,7 +2027,7 @@ func init() {
 func init() { proto.RegisterFile("query_service.proto", fileDescriptor_5fcb6756dc1afb8d) }
 
 var fileDescriptor_5fcb6756dc1afb8d = []byte{
-	// 1898 bytes of a gzipped FileDescriptorProto
+	// 1902 bytes of a gzipped FileDescriptorProto
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+	0xc1, 0xfa, 0x4a, 0x2c, 0x76, 0x2f, 0xa4, 0x27, 0x1e, 0x19, 0x0b, 0x1f, 0xee, 0x85, 0xf4, 0x29,
+	0x26, 0x7a, 0x25, 0xde, 0x60, 0xd8, 0xf6, 0xe3, 0x8d, 0x6a, 0xbc, 0x11, 0x2f, 0xb0, 0xab, 0xd7,
+	0xb6, 0xff, 0x03, 0xd0, 0xe2, 0xb0, 0x78, 0x28, 0xc6, 0xe1, 0x68, 0x0a, 0x68, 0x0f, 0x47, 0xbb,
+	0x34, 0x98, 0x52, 0x92, 0x68, 0x60, 0xe8, 0xfd, 0x05, 0xa3, 0xdd, 0x32, 0xab, 0x34, 0xba, 0xff,
+	0xad, 0x05, 0x27, 0x0a, 0xec, 0xc6, 0x0a, 0x0a, 0xb8, 0xc6, 0xb8, 0x8f, 0xb8, 0xef, 0x39, 0x5f,
+	0x24, 0xc3, 0x86, 0x53, 0x34, 0x16, 0x58, 0x13, 0x8d, 0x85, 0xab, 0x2e, 0x17, 0x87, 0x51, 0xe8,
+	0x91, 0x71, 0xf2, 0xd6, 0x31, 0x56, 0xd0, 0x31, 0x5c, 0x8e, 0xdf, 0x41, 0x91, 0x1d, 0x79, 0x2c,
+	0xf2, 0x1c, 0x96, 0x28, 0xdc, 0x5e, 0xac, 0xb0, 0xc4, 0xfc, 0x8c, 0x2a, 0x1d, 0x68, 0x65, 0x47,
+	0xef, 0xe8, 0x96, 0xaa, 0x84, 0x15, 0x7f, 0x0f, 0xf4, 0x6f, 0x9f, 0xcd, 0x98, 0x2a, 0xf1, 0xa1,
+	0x5b, 0x18, 0x77, 0xa3, 0x4d, 0x25, 0xf8, 0x29, 0x67, 0xee, 0xfd, 0x77, 0x97, 0xe2, 0x4d, 0xb5,
+	0x79, 0xd0, 0xc9, 0x8f, 0x98, 0xd1, 0x3b, 0x8b, 0x04, 0x94, 0xc6, 0x78, 0xfd, 0xcd, 0x65, 0x58,
+	0x53, 0x55, 0x0f, 0xa0, 0x93, 0x9f, 0x7b, 0xaa, 0x55, 0x29, 0x67, 0xa3, 0xfd, 0xd3, 0xde, 0xb2,
+	0xc6, 0x0a, 0xfa, 0x05, 0xbc, 0x56, 0x1a, 0x36, 0xa2, 0x6f, 0xab, 0xa3, 0xae, 0x9e, 0x49, 0x9e,
+	0xa5, 0x41, 0x5a, 0x9f, 0xf9, 0x4a, 0x2e, 0xb4, 0xbe, 0x34, 0x75, 0x5e, 0xde, 0xfa, 0x8c, 0xf8,
+	0xd3, 0xac, 0x7f, 0x66, 0x0d, 0x33, 0x40, 0xe5, 0x71, 0x23, 0x7a, 0x4f, 0xa5, 0x62, 0xe1, 0xc8,
+	0xb3, 0xbf, 0xb5, 0x2c, 0x7b, 0x9a, 0xf2, 0x19, 0x87, 0x84, 0xe2, 0x64, 0x4e, 0xa9, 0x76, 0xe1,
+	0xa4, 0x51, 0xad, 0x76, 0xf1, 0xf4, 0x4d, 0x14, 0x75, 0x7e, 0x44, 0xa2, 0xce, 0x95, 0x72, 0x24,
+	0xa6, 0x2e, 0x6a, 0xf5, 0xc4, 0xc5, 0x58, 0xd9, 0xfe, 0x6a, 0x1d, 0x1a, 0xdc, 0x79, 0x0e, 0x08,
+	0xff, 0x07, 0xdd, 0xe7, 0x0f, 0xba, 0x0f, 0xa1, 0x5b, 0x18, 0x34, 0xa9, 0xf1, 0x50, 0x3d, 0x8d,
+	0x3a, 0xeb, 0x62, 0x8c, 0x00, 0x95, 0xa7, 0x3c, 0xea, 0x0a, 0x5d, 0x38, 0x0d, 0x3a, 0x4b, 0xc7,
+	0x43, 0xe8, 0x16, 0xa6, 0x2c, 0x6a, 0x0f, 0xd4, 0xa3, 0x98, 0xb3, 0xa4, 0x7f, 0x0e, 0xad, 0xec,
+	0x7b, 0x5b, 0xfd, 0x51, 0x52, 0xbc, 0xc8, 0x5f, 0x3e, 0x28, 0xbd, 0x78, 0xd0, 0x7e, 0x08, 0xdd,
+	0xc2, 0x13, 0x5b, 0x1d, 0x79, 0xf5, 0x3b, 0xfc, 0x2c, 0xe9, 0x5f, 0x1f, 0xcc, 0xec, 0x7c, 0xf8,
+	0x60, 0x7b, 0xec, 0x45, 0x93, 0xd9, 0x28, 0x36, 0xe2, 0x8e, 0x38, 0xf9, 0x9e, 0x47, 0xe5, 0xaf,
+	0x3b, 0xc9, 0x7d, 0xbb, 0xc3, 0x85, 0xdd, 0xe1, 0xc2, 0xa6, 0xa3, 0x51, 0x9d, 0x2f, 0x3f, 0xf8,
+	0x6f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x7a, 0x26, 0x76, 0x5f, 0x2a, 0x21, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/scripts/proto_gen_go.sh b/scripts/proto_gen_go.sh
index 275d38ebac..561829afa2 100755
--- a/scripts/proto_gen_go.sh
+++ b/scripts/proto_gen_go.sh
@@ -48,7 +48,7 @@ ${protoc} --go_out=plugins=grpc,paths=source_relative:./internalpb internal.prot
 ${protoc} --go_out=plugins=grpc,paths=source_relative:./milvuspb milvus.proto
 ${protoc} --go_out=plugins=grpc,paths=source_relative:./proxypb proxy_service.proto
 ${protoc} --go_out=plugins=grpc,paths=source_relative:./indexpb index_service.proto
-${protoc} --go_out=plugins=grpc,paths=source_relative:./datapb data_service.proto
+${protoc} --go_out=plugins=grpc,paths=source_relative:./datapb data_coord.proto
 ${protoc} --go_out=plugins=grpc,paths=source_relative:./querypb query_service.proto
 ${protoc} --go_out=plugins=grpc,paths=source_relative:./planpb plan.proto
 ${protoc} --go_out=plugins=grpc,paths=source_relative:./segcorepb segcore.proto
diff --git a/scripts/run_docker.sh b/scripts/run_docker.sh
index 552514536d..5ac794694d 100755
--- a/scripts/run_docker.sh
+++ b/scripts/run_docker.sh
@@ -16,7 +16,7 @@ echo "starting queryservice docker"
 nohup docker-compose -p milvus up queryservice > ~/queryservice_docker.log 2>&1 &
 
 echo "starting dataservice docker"
-nohup docker-compose -p milvus up dataservice > ~/dataservice_docker.log 2>&1 &
+nohup docker-compose -p milvus up datacoord > ~/dataservice_docker.log 2>&1 &
 
 echo "starting querynode1 docker"
 nohup docker-compose -p milvus run -e QUERY_NODE_ID=1 querynode > ~/querynode1_docker.log 2>&1 &
diff --git a/scripts/run_go_unittest.sh b/scripts/run_go_unittest.sh
index 250b2ac78b..ef85571e9e 100755
--- a/scripts/run_go_unittest.sh
+++ b/scripts/run_go_unittest.sh
@@ -37,5 +37,5 @@ go test -race -cover "${MILVUS_DIR}/querynode/..." -failfast
 
 go test -race -cover -v "${MILVUS_DIR}/distributed/rootcoord" -failfast
 go test -race -cover -v "${MILVUS_DIR}/rootcoord" -failfast
-go test -race -cover -v "${MILVUS_DIR}/dataservice/..." -failfast
+go test -race -cover -v "${MILVUS_DIR}/datacoord/..." -failfast
 go test -race -cover -v "${MILVUS_DIR}/indexcoord/..." -failfast