Add ignorable error to bypass requeue

controller/error.go

@@ -0,0 +1,9 @@
+package controller
+
+type ForgetError struct {
+	Err error
+}
+
+func (f *ForgetError) Error() string {
+	return f.Err.Error()
+}

controller/generic_controller.go

@@ -162,7 +162,7 @@ func (g *genericController) processNextWorkItem() bool {
 
 	// do your work on the key.  This method will contains your "do stuff" logic
 	err := g.syncHandler(key.(string))
-	if err == nil {
+	if _, ok := err.(*ForgetError); err == nil || ok {
 		g.queue.Forget(key)
 		return true
 	}