diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/Resource.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/Resource.java
index b32955b9e22..304a9639c5f 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/Resource.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/Resource.java
@@ -102,9 +102,12 @@ public static Resource newInstance(long memory, int vCores) {
   @Stable
   public static Resource newInstance(long memory, int vCores,
       Map<String, Long> others) {
-    ResourceInformation[] info = ResourceUtils.createResourceTypesArray(others);
-
-    return new LightWeightResource(memory, vCores, info);
+    if (others != null) {
+      return new LightWeightResource(memory, vCores,
+          ResourceUtils.createResourceTypesArray(others));
+    } else {
+      return newInstance(memory, vCores);
+    }
   }
 
   @InterfaceAudience.Private
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/util/resource/ResourceUtils.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/util/resource/ResourceUtils.java
index 3c6ca98d677..76ae0614f67 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/util/resource/ResourceUtils.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/util/resource/ResourceUtils.java
@@ -313,15 +313,13 @@ public static Map<String, ResourceInformation> getResourceTypes() {
   }
 
   public static ResourceInformation[] getResourceTypesArray() {
-    initializeResourceTypesIfNeeded(null,
-        YarnConfiguration.RESOURCE_TYPES_CONFIGURATION_FILE);
+    initializeResourceTypesIfNeeded();
     return resourceTypesArray;
   }
 
   public static int getNumberOfKnownResourceTypes() {
     if (numKnownResourceTypes < 0) {
-      initializeResourceTypesIfNeeded(null,
-          YarnConfiguration.RESOURCE_TYPES_CONFIGURATION_FILE);
+      initializeResourceTypesIfNeeded();
     }
     return numKnownResourceTypes;
   }
@@ -332,6 +330,11 @@ private static Map<String, ResourceInformation> getResourceTypes(
         YarnConfiguration.RESOURCE_TYPES_CONFIGURATION_FILE);
   }
 
+  private static void initializeResourceTypesIfNeeded() {
+    initializeResourceTypesIfNeeded(null,
+        YarnConfiguration.RESOURCE_TYPES_CONFIGURATION_FILE);
+  }
+
   private static void initializeResourceTypesIfNeeded(Configuration conf,
       String resourceFile) {
     if (!initializedResources) {
@@ -641,6 +644,8 @@ public static List<ResourceInformation> getRequestedResourcesFromConfig(
    */
   public static ResourceInformation[] createResourceTypesArray(Map<String,
       Long> res) {
+    initializeResourceTypesIfNeeded();
+
     ResourceInformation[] info = new ResourceInformation[resourceTypes.size()];
 
     for (Entry<String, Integer> entry : RESOURCE_NAME_TO_INDEX.entrySet()) {