diff --git a/internal/distributed/datacoord/client/client.go b/internal/distributed/datacoord/client/client.go
index 715db7fe4d..ce9269d0c6 100644
--- a/internal/distributed/datacoord/client/client.go
+++ b/internal/distributed/datacoord/client/client.go
@@ -511,6 +511,7 @@ func (c *Client) GetFlushedSegments(ctx context.Context, req *datapb.GetFlushedS
 	return ret.(*datapb.GetFlushedSegmentsResponse), err
 }
 
+// GetMetrics gets all metrics of datacoord
 func (c *Client) GetMetrics(ctx context.Context, req *milvuspb.GetMetricsRequest) (*milvuspb.GetMetricsResponse, error) {
 	ret, err := c.recall(func() (interface{}, error) {
 		client, err := c.getGrpcClient()