diff --git a/Dockerfile b/Dockerfile
index 2fcca76acb..df369c497b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,6 +34,6 @@ RUN apt-get update \
     && apt-get install -y openssl curl tini \
     && rm -rf /var/lib/apt/lists/*
 COPY hack/gencerts.sh /usr/bin/
-
+ENV HTTP2_DISABLE=true
 COPY entrypoint.sh /usr/bin/
 ENTRYPOINT ["/usr/bin/entrypoint.sh"]
diff --git a/manifest/crds/sparkoperator.k8s.io_scheduledsparkapplications.yaml b/manifest/crds/sparkoperator.k8s.io_scheduledsparkapplications.yaml
index 315f4c9e98..2f6ded6225 100644
--- a/manifest/crds/sparkoperator.k8s.io_scheduledsparkapplications.yaml
+++ b/manifest/crds/sparkoperator.k8s.io_scheduledsparkapplications.yaml
@@ -796,6 +796,7 @@ spec:
                                   type: string
                               required:
                               - containerPort
+                              - protocol
                               type: object
                             type: array
                             x-kubernetes-list-map-keys:
@@ -1439,6 +1440,7 @@ spec:
                                   type: string
                               required:
                               - containerPort
+                              - protocol
                               type: object
                             type: array
                             x-kubernetes-list-map-keys:
@@ -2380,6 +2382,7 @@ spec:
                                   type: string
                               required:
                               - containerPort
+                              - protocol
                               type: object
                             type: array
                             x-kubernetes-list-map-keys:
@@ -2919,6 +2922,7 @@ spec:
                                   type: string
                               required:
                               - containerPort
+                              - protocol
                               type: object
                             type: array
                             x-kubernetes-list-map-keys:
diff --git a/pkg/webhook/patch.go b/pkg/webhook/patch.go
index fb3eb9b650..0c4b045605 100644
--- a/pkg/webhook/patch.go
+++ b/pkg/webhook/patch.go
@@ -713,42 +713,28 @@ func addCustomResources(pod *corev1.Pod, app *v1beta2.SparkApplication) []patchO
 		resource = app.Spec.Executor.CustomResources
 	}
 
-	var coreContainerRequests corev1.ResourceList
-	var coreContainerLimits corev1.ResourceList
-
 	i := 0
 	// Find the driver or executor container in the pod.
 	for ; i < len(pod.Spec.Containers); i++ {
 		if pod.Spec.Containers[i].Name == config.SparkDriverContainerName ||
 			pod.Spec.Containers[i].Name == config.SparkExecutorContainerName {
-			coreContainerRequests = pod.Spec.Containers[i].Resources.Requests
-			coreContainerLimits = pod.Spec.Containers[i].Resources.Requests
 			break
 		}
 	}
 	requestsPath := fmt.Sprintf("/spec/containers/%d/resources/requests", i)
 	limitsPath := fmt.Sprintf("/spec/containers/%d/resources/limits", i)
 
-	for k, v := range coreContainerRequests {
-		if resource.Requests == nil {
-			resource.Requests = make(corev1.ResourceList)
-		}
-		resource.Requests[k] = v
-	}
-	for k, v := range coreContainerLimits {
-		if resource.Limits == nil {
-			resource.Limits = make(corev1.ResourceList)
-		}
-		resource.Limits[k] = v
-
-	}
-
+	encoder := strings.NewReplacer("~", "~0", "/", "~1")
 	if len(resource.Requests) != 0 {
-		ops = append(ops, patchOperation{Op: "add", Path: requestsPath, Value: resource.Requests})
+		for k, v := range resource.Requests {
+			ops = append(ops, patchOperation{Op: "add", Path: fmt.Sprintf("%s/%s", requestsPath, encoder.Replace(string(k))), Value: v})
+		}
 	}
 
 	if len(resource.Limits) != 0 {
-		ops = append(ops, patchOperation{Op: "add", Path: limitsPath, Value: resource.Limits})
+		for k, v := range resource.Limits {
+			ops = append(ops, patchOperation{Op: "add", Path: fmt.Sprintf("%s/%s", limitsPath, encoder.Replace(string(k))), Value: v})
+		}
 	}
 
 	return ops