mapping data to etcd

vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go

@@ -128,9 +128,8 @@ func (r *rudimentaryErrorBackoff) OnError(error) {
 	r.lastErrorTimeLock.Lock()
 	defer r.lastErrorTimeLock.Unlock()
 	d := time.Since(r.lastErrorTime)
-	if d < r.minPeriod && d >= 0 {
+	if d < r.minPeriod {
 		// If the time moves backwards for any reason, do nothing
-		// TODO: remove check "d >= 0" after go 1.8 is no longer supported
 		time.Sleep(r.minPeriod - d)
 	}
 	r.lastErrorTime = time.Now()
@@ -161,3 +160,10 @@ func RecoverFromPanic(err *error) {
 			callers)
 	}
 }
+
+// Must panics on non-nil errors.  Useful to handling programmer level errors.
+func Must(err error) {
+	if err != nil {
+		panic(err)
+	}
+}