diff --git a/cmd/datanode/main.go b/cmd/datanode/main.go
index 51761fa865cf54ada8e7d03049592177146f7165..d05153bdd9c85fb4911c95b5ec31116fa056e9ea 100644
--- a/cmd/datanode/main.go
+++ b/cmd/datanode/main.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package main
 
 import (
diff --git a/internal/datanode/allocator.go b/internal/datanode/allocator.go
index 90bb4d04a80418e9858fbfc65bdd59e0632961ad..97971568bfeac67ebaace21c3c006a51c297a491 100644
--- a/internal/datanode/allocator.go
+++ b/internal/datanode/allocator.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/binlog_meta.go b/internal/datanode/binlog_meta.go
index a0c83623d4173809ffd0d11bb7ae7d2823e20b39..0bbc4573461062292d5e3a33887bf2f8f1764f5b 100644
--- a/internal/datanode/binlog_meta.go
+++ b/internal/datanode/binlog_meta.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/binlog_meta_test.go b/internal/datanode/binlog_meta_test.go
index b460e50962cce414502949f10a982fbdd49d0721..49eabf14a77d66471552b76db5f1e497ca25014b 100644
--- a/internal/datanode/binlog_meta_test.go
+++ b/internal/datanode/binlog_meta_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/collection.go b/internal/datanode/collection.go
index ae1b1d1f5ccb548cbad59540fea8d773687858d0..f0df8b76b047f1f0d6671d552eaed0da166976ef 100644
--- a/internal/datanode/collection.go
+++ b/internal/datanode/collection.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/collection_replica.go b/internal/datanode/collection_replica.go
index 86a66a5741ab136c5ef529018b3c0c975961629f..8b1c121ae5857b295340d2c8d9c980ae67c8416b 100644
--- a/internal/datanode/collection_replica.go
+++ b/internal/datanode/collection_replica.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/collection_replica_test.go b/internal/datanode/collection_replica_test.go
index e5ebbddcb4cedf9dd1881546c47e1d9c3d9a4aa7..a4acdd92e1bc8dea4ed902c0aae6730a7719fd22 100644
--- a/internal/datanode/collection_replica_test.go
+++ b/internal/datanode/collection_replica_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/collection_test.go b/internal/datanode/collection_test.go
index 444ec65cd96e32a2810f2d281f1f84a248809837..b7cd3a69dbcc3e592c783411fc30ff6ac4eed27d 100644
--- a/internal/datanode/collection_test.go
+++ b/internal/datanode/collection_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/data_node.go b/internal/datanode/data_node.go
index d96b40bb6654602c68ff5a43630d7b0008fc492f..58773cab8039d0d6d61c26ddcf2f94a96371f335 100644
--- a/internal/datanode/data_node.go
+++ b/internal/datanode/data_node.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/data_node_test.go b/internal/datanode/data_node_test.go
index 9394e4bb87722b88b0d3d5a93da80c2d14dccdfb..4e8f34604a91b9975ba7e42e8afb9fdc52837dfd 100644
--- a/internal/datanode/data_node_test.go
+++ b/internal/datanode/data_node_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/data_sync_service.go b/internal/datanode/data_sync_service.go
index 2c1c7309ca0dcdb85a61575c1ef128e611ee41be..7017c126ee38a23e4c99139bdff4d36ddd0b08ed 100644
--- a/internal/datanode/data_sync_service.go
+++ b/internal/datanode/data_sync_service.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/data_sync_service_test.go b/internal/datanode/data_sync_service_test.go
index a6f469052ae27f4575cf9dc88a796b6b5e68a2e0..819aa4d7c6aadc9c944657032bf824f1199543b3 100644
--- a/internal/datanode/data_sync_service_test.go
+++ b/internal/datanode/data_sync_service_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_dd_node.go b/internal/datanode/flow_graph_dd_node.go
index 3b192b8c05ea6f0ea70711015634ffdc02be9541..0cde20d59bd9e4b85e3576bc793c57c611d97ec4 100644
--- a/internal/datanode/flow_graph_dd_node.go
+++ b/internal/datanode/flow_graph_dd_node.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_dd_node_test.go b/internal/datanode/flow_graph_dd_node_test.go
index 94f80632539b77c79ef00d66afb5c978c8a7eeb7..401063324306b15d3fb4ba5c1c8a0439f2a35c34 100644
--- a/internal/datanode/flow_graph_dd_node_test.go
+++ b/internal/datanode/flow_graph_dd_node_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_filter_dm_node.go b/internal/datanode/flow_graph_filter_dm_node.go
index fe33458f26f105712c6340271b3c43c7e043872c..9a08e7d84376bf9be436f09b18ee3fe705cc6dae 100644
--- a/internal/datanode/flow_graph_filter_dm_node.go
+++ b/internal/datanode/flow_graph_filter_dm_node.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_gc_node.go b/internal/datanode/flow_graph_gc_node.go
index 571de3ddcb5b97e8a7fd636fb03d2db3d7944fac..cdd5426e929eb062fc62fb9738c6f64d82aec9fb 100644
--- a/internal/datanode/flow_graph_gc_node.go
+++ b/internal/datanode/flow_graph_gc_node.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_insert_buffer_node.go b/internal/datanode/flow_graph_insert_buffer_node.go
index b3e5cd9300698ea896cd620007a4f73f72baab93..249d2c64c867b4b245bbe11d418ae22312eab8e1 100644
--- a/internal/datanode/flow_graph_insert_buffer_node.go
+++ b/internal/datanode/flow_graph_insert_buffer_node.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_insert_buffer_node_test.go b/internal/datanode/flow_graph_insert_buffer_node_test.go
index 14f69f250b0aecda87ff94872b9d979d3c35105e..d35ac3fac2bb116e9fb87df3e004782a2ae8b5da 100644
--- a/internal/datanode/flow_graph_insert_buffer_node_test.go
+++ b/internal/datanode/flow_graph_insert_buffer_node_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_message.go b/internal/datanode/flow_graph_message.go
index 0e9d33d43fcc0ce76c44d04a30ff01324b169135..f36a80df89a772760a686dd4a872e456ee31e3c6 100644
--- a/internal/datanode/flow_graph_message.go
+++ b/internal/datanode/flow_graph_message.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_msg_stream_input_node.go b/internal/datanode/flow_graph_msg_stream_input_node.go
index b7bfd63f940697d4e78501785390a336352b2d7f..5830b02c9b7d5fdcd72eab44095a281858132135 100644
--- a/internal/datanode/flow_graph_msg_stream_input_node.go
+++ b/internal/datanode/flow_graph_msg_stream_input_node.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/flow_graph_node.go b/internal/datanode/flow_graph_node.go
index 24845d3e34e4fc348ad6b1b7727562eecdf2272e..6f875781dbd3b088e5ae5e118d5da0a96714b1ce 100644
--- a/internal/datanode/flow_graph_node.go
+++ b/internal/datanode/flow_graph_node.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import "github.com/zilliztech/milvus-distributed/internal/util/flowgraph"
diff --git a/internal/datanode/meta_service.go b/internal/datanode/meta_service.go
index 04bcc2cafdf3ce87fea9cbb431cc4310b35a8643..cafae1782f52a6231adea2225780130e461f5a86 100644
--- a/internal/datanode/meta_service.go
+++ b/internal/datanode/meta_service.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/meta_service_test.go b/internal/datanode/meta_service_test.go
index 3877ead407c52a69e893a7dc399dab5a10372d94..6fa8cd7a980492ac2ebd3dabace668c969d1b944 100644
--- a/internal/datanode/meta_service_test.go
+++ b/internal/datanode/meta_service_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/param_table.go b/internal/datanode/param_table.go
index 455bac68a97657e4de97143bb67314c9eed7a549..f2af0f9a774c19f19501d9ed4b88bfee76a3213b 100644
--- a/internal/datanode/param_table.go
+++ b/internal/datanode/param_table.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/param_table_test.go b/internal/datanode/param_table_test.go
index 1fe8cbce591c4bcb2a76d96a2a66bd6b19bda8d3..4b6ec9022171606c3b40cbcb4b6ac10eb24186c3 100644
--- a/internal/datanode/param_table_test.go
+++ b/internal/datanode/param_table_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import (
diff --git a/internal/datanode/type_def.go b/internal/datanode/type_def.go
index 4cea67e9b7a76d8b99e9cbdef4fb8ec0c406af02..ff44d19d7b827b026ab0e9d6becffb821b43f8ba 100644
--- a/internal/datanode/type_def.go
+++ b/internal/datanode/type_def.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package datanode
 
 import "github.com/zilliztech/milvus-distributed/internal/util/typeutil"
diff --git a/internal/distributed/datanode/client/client.go b/internal/distributed/datanode/client/client.go
index 94ce59a9312f932c7cbb8b3426778f91a10d6efd..ef9a9c63a186fa93e6cb3efa45dc452ef5690807 100644
--- a/internal/distributed/datanode/client/client.go
+++ b/internal/distributed/datanode/client/client.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package grpcdatanodeclient
 
 import (
diff --git a/internal/distributed/datanode/param_table.go b/internal/distributed/datanode/param_table.go
index 863c59cae04bba10d93c5baaae90f0ff04c9cc3b..dc1de2be3b72d4e7f9b83e47245d36621e3df9c2 100644
--- a/internal/distributed/datanode/param_table.go
+++ b/internal/distributed/datanode/param_table.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package grpcdatanode
 
 import (
diff --git a/internal/distributed/datanode/param_table_test.go b/internal/distributed/datanode/param_table_test.go
index 1b32758f170023e88f3791691b0ca43c94e5d7f2..694bacc7a08090b0345c8603c274fe75106c6d8e 100644
--- a/internal/distributed/datanode/param_table_test.go
+++ b/internal/distributed/datanode/param_table_test.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package grpcdatanode
 
 import (
diff --git a/internal/distributed/datanode/service.go b/internal/distributed/datanode/service.go
index 174e192a50f21b1d74a3bdf1be9236b195b14083..44c2dd687e4cc04c9c4b3488237cc0a0824338c9 100644
--- a/internal/distributed/datanode/service.go
+++ b/internal/distributed/datanode/service.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package grpcdatanode
 
 import (