Remove useless error

pkg/api/v1/resource/helpers.go

@@ -27,7 +27,7 @@ import (
 
 // PodRequestsAndLimits returns a dictionary of all defined resources summed up for all
 // containers of the pod.
-func PodRequestsAndLimits(pod *v1.Pod) (reqs map[v1.ResourceName]resource.Quantity, limits map[v1.ResourceName]resource.Quantity, err error) {
+func PodRequestsAndLimits(pod *v1.Pod) (reqs map[v1.ResourceName]resource.Quantity, limits map[v1.ResourceName]resource.Quantity) {
 	reqs, limits = map[v1.ResourceName]resource.Quantity{}, map[v1.ResourceName]resource.Quantity{}
 	for _, container := range pod.Spec.Containers {
 		for name, quantity := range container.Resources.Requests {

pkg/kubelet/cm/helpers_linux.go

@@ -86,10 +86,7 @@ func MilliCPUToShares(milliCPU int64) int64 {
 // ResourceConfigForPod takes the input pod and outputs the cgroup resource config.
 func ResourceConfigForPod(pod *v1.Pod) *ResourceConfig {
 	// sum requests and limits.
-	reqs, limits, err := resource.PodRequestsAndLimits(pod)
-	if err != nil {
-		return &ResourceConfig{}
-	}
+	reqs, limits := resource.PodRequestsAndLimits(pod)
 
 	cpuRequests := int64(0)
 	cpuLimits := int64(0)

pkg/kubelet/cm/qos_container_manager_linux.go

@@ -148,10 +148,7 @@ func (m *qosContainerManagerImpl) setCPUCgroupConfig(configs map[v1.PodQOSClass]
 			// we only care about the burstable qos tier
 			continue
 		}
-		req, _, err := resource.PodRequestsAndLimits(pod)
-		if err != nil {
-			return err
-		}
+		req, _ := resource.PodRequestsAndLimits(pod)
 		if request, found := req[v1.ResourceCPU]; found {
 			burstablePodCPURequest += request.MilliValue()
 		}
@@ -188,11 +185,7 @@ func (m *qosContainerManagerImpl) setMemoryReserve(configs map[v1.PodQOSClass]*C
 			// limits are not set for Best Effort pods
 			continue
 		}
-		req, _, err := resource.PodRequestsAndLimits(pod)
-		if err != nil {
-			glog.V(2).Infof("[Container Manager] Pod resource requests/limits could not be determined.  Not setting QOS memory limts.")
-			return
-		}
+		req, _ := resource.PodRequestsAndLimits(pod)
 		if request, found := req[v1.ResourceMemory]; found {
 			podMemoryRequest += request.Value()
 		}