diff --git a/internal/datacoord/meta.go b/internal/datacoord/meta.go
index 58c3516b9e..3b43d7e748 100644
--- a/internal/datacoord/meta.go
+++ b/internal/datacoord/meta.go
@@ -9,6 +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 datacoord contains core functions in datacoord
 package datacoord
 
 import (