ignore deleted queues in queue reconciles (NVIDIA#272)

Author: enoodle

pkg/queuecontroller/controllers/queue_controller.go

@@ -15,7 +15,7 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 
-	"github.com/NVIDIA/KAI-scheduler/pkg/apis/scheduling/v2"
+	v2 "github.com/NVIDIA/KAI-scheduler/pkg/apis/scheduling/v2"
 	"github.com/NVIDIA/KAI-scheduler/pkg/apis/scheduling/v2alpha2"
 	"github.com/NVIDIA/KAI-scheduler/pkg/queuecontroller/common"
 	"github.com/NVIDIA/KAI-scheduler/pkg/queuecontroller/controllers/childqueues_updater"
@@ -54,7 +54,7 @@ func (r *QueueReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl
 	queue := &v2.Queue{}
 	err := r.Get(ctx, req.NamespacedName, queue)
 	if err != nil {
-		return ctrl.Result{}, err
+		return ctrl.Result{}, client.IgnoreNotFound(err)
 	}
 	originalQueue := queue.DeepCopy()