diff --git a/internal/querynode/impl.go b/internal/querynode/impl.go
index d73a0e6fe1..6e0a494814 100644
--- a/internal/querynode/impl.go
+++ b/internal/querynode/impl.go
@@ -376,6 +376,7 @@ func (node *QueryNode) ReleaseCollection(ctx context.Context, in *queryPb.Releas
 	return status, nil
 }
 
+// ReleasePartitions clears all data related to this partition on the querynode
 func (node *QueryNode) ReleasePartitions(ctx context.Context, in *queryPb.ReleasePartitionsRequest) (*commonpb.Status, error) {
 	code := node.stateCode.Load().(internalpb.StateCode)
 	if code != internalpb.StateCode_Healthy {