Merge pull request #2451 from sbueringer/pr-log-warn

🌱 log warning if error and non-zero Result returned

Author: k8s-ci-robot

pkg/internal/controller/controller.go

@@ -323,6 +323,9 @@ func (c *Controller) reconcileHandler(ctx context.Context, obj interface{}) {
 		}
 		ctrlmetrics.ReconcileErrors.WithLabelValues(c.Name).Inc()
 		ctrlmetrics.ReconcileTotal.WithLabelValues(c.Name, labelError).Inc()
+		if !result.IsZero() {
+			log.Info("Warning: Reconciler returned both a non-zero result and a non-nil error. The result will always be ignored if the error is non-nil and the non-nil error causes reqeueuing with exponential backoff. For more details, see: https://pkg.go.dev/sigs.k8s.io/controller-runtime/pkg/reconcile#Reconciler")
+		}
 		log.Error(err, "Reconciler error")
 	case result.RequeueAfter > 0:
 		log.V(5).Info(fmt.Sprintf("Reconcile done, requeueing after %s", result.RequeueAfter))