Merge pull request volcano-sh#3599 from Wang-Kai/handle-job-not-found

handle job not found case

pkg/controllers/garbagecollector/garbagecollector.go

@@ -28,6 +28,7 @@ import (
 	"k8s.io/client-go/util/workqueue"
 	"k8s.io/klog/v2"
 
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"volcano.sh/apis/pkg/apis/batch/v1alpha1"
 	vcclientset "volcano.sh/apis/pkg/client/clientset/versioned"
 	vcinformer "volcano.sh/apis/pkg/client/informers/externalversions"
@@ -232,7 +233,12 @@ func (gc *gccontroller) processJob(key string) error {
 		Preconditions:     &metav1.Preconditions{UID: &fresh.UID},
 	}
 	klog.V(4).Infof("Cleaning up Job %s/%s", namespace, name)
-	return gc.vcClient.BatchV1alpha1().Jobs(fresh.Namespace).Delete(context.TODO(), fresh.Name, options)
+	err = gc.vcClient.BatchV1alpha1().Jobs(fresh.Namespace).Delete(context.TODO(), fresh.Name, options)
+	if apierrors.IsNotFound(err) {
+		// if the job had deleted, it will not be added to queue
+		return nil
+	}
+	return err
 }
 
 // processTTL checks whether a given Job's TTL has expired, and add it to the queue after the TTL is expected to expire