diff --git a/internal/datacoord/channel_manager_factory.go b/internal/datacoord/channel_manager_factory.go
index 3dcabc849a..200870f3bb 100644
--- a/internal/datacoord/channel_manager_factory.go
+++ b/internal/datacoord/channel_manager_factory.go
@@ -97,6 +97,7 @@ func (f *ConsistentHashChannelPolicyFactory) NewReassignPolicy() ChannelReassign
 	return EmptyReassignPolicy
 }
 
+// NewBgChecker creates a new background checker
 func (f *ConsistentHashChannelPolicyFactory) NewBgChecker() ChannelBGChecker {
 	return EmptyBgChecker
 }