diff --git a/internal/datacoord/channel_manager_factory.go b/internal/datacoord/channel_manager_factory.go
index 3dcabc849af10d7c0f50d1297aad5d66fc6158c3..200870f3bbfe48d8d861a2b6b57fe4c6e44926f6 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
 }