diff --git a/uid/assigner.go b/uid/assigner.go
index 43b80352dfb00e14be8de500d2f18cb095280bf8..d7384fc3f63b191c9be1054c642f6e4f4a220037 100644
--- a/uid/assigner.go
+++ b/uid/assigner.go
@@ -97,6 +97,7 @@ func (lm *lockManager) clean() {
 func init() {
 	lmgr = new(lockManager)
 	lmgr.locks = make(map[string]*entry)
+	// TODO(manishrjain): This map should be cleaned up.
 	// go lmgr.clean()
 }