YARN-10912. AbstractCSQueue#updateConfigurableResourceRequirement: Separate validation logic from initialization logic (#3390)

- capacityConfigType update is extracted to a separate method
 - validation logic is extracted to a helper function
 - min resource must not be greater than max resource is now checked
   after the max resource is updated

Change-Id: I731c2639281721afed32c30854bafcf048d6ee28

Co-authored-by: Tamas Domok <tdomok@cloudera.com>

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/AbstractCSQueue.java

@@ -369,14 +369,15 @@ public abstract class AbstractCSQueue implements CSQueue {
       setupConfigurableCapacities(configuration);
       updateAbsoluteCapacities();
 
+      updateCapacityConfigType();
+
       // Fetch minimum/maximum resource limits for this queue if
       // configured
-      capacityConfigType = CapacityConfigType.NONE;
       this.resourceTypes = new HashSet<>();
       for (AbsoluteResourceType type : AbsoluteResourceType.values()) {
         resourceTypes.add(type.toString().toLowerCase());
       }
-      updateConfigurableResourceRequirement(getQueuePath(), clusterResource);
+      updateConfigurableResourceLimits(clusterResource);
 
       // Setup queue's maximumAllocation respecting the global
       // and the queue settings
@@ -601,12 +602,9 @@ public abstract class AbstractCSQueue implements CSQueue {
         queuePath, resourceTypes);
   }
 
-  protected void updateConfigurableResourceRequirement(String queuePath,
-      Resource clusterResource) {
+  protected void updateCapacityConfigType() {
+    this.capacityConfigType = CapacityConfigType.NONE;
     for (String label : configuredNodeLabels) {
-      Resource minResource = getMinimumAbsoluteResource(queuePath, label);
-      Resource maxResource = getMaximumAbsoluteResource(queuePath, label);
-
       LOG.debug("capacityConfigType is '{}' for queue {}",
           capacityConfigType, getQueuePath());
 
@@ -621,39 +619,35 @@ public abstract class AbstractCSQueue implements CSQueue {
       } else {
         validateAbsoluteVsPercentageCapacityConfig(localType);
       }
+    }
+  }
 
-      // If min resource for a resource type is greater than its max resource,
-      // throw exception to handle such error configs.
-      if (!maxResource.equals(Resources.none()) && Resources.greaterThan(
-          resourceCalculator, clusterResource, minResource, maxResource)) {
-        throw new IllegalArgumentException("Min resource configuration "
-            + minResource + " is greater than its max value:" + maxResource
-            + " in queue:" + getQueuePath());
-      }
+  protected void updateConfigurableResourceLimits(Resource clusterResource) {
+    for (String label : configuredNodeLabels) {
+      final Resource minResource = getMinimumAbsoluteResource(queuePath, label);
+      Resource maxResource = getMaximumAbsoluteResource(queuePath, label);
 
-      // If parent's max resource is lesser to a specific child's max
-      // resource, throw exception to handle such error configs.
       if (parent != null) {
-        Resource parentMaxRes = parent.getQueueResourceQuotas()
-            .getConfiguredMaxResource(label);
-        if (Resources.greaterThan(resourceCalculator, clusterResource,
-            parentMaxRes, Resources.none())) {
-          if (Resources.greaterThan(resourceCalculator, clusterResource,
-              maxResource, parentMaxRes)) {
-            throw new IllegalArgumentException("Max resource configuration "
+        final Resource parentMax = parent.getQueueResourceQuotas().getConfiguredMaxResource(label);
+        validateMinResourceIsNotGreaterThanMaxResource(maxResource, parentMax, clusterResource,
+            "Max resource configuration "
                 + maxResource + " is greater than parents max value:"
-                + parentMaxRes + " in queue:" + getQueuePath());
-          }
+                + parentMax + " in queue:" + getQueuePath());
 
-          // If child's max resource is not set, but its parent max resource is
-          // set, we must set child max resource to its parent's.
-          if (maxResource.equals(Resources.none())
-              && !minResource.equals(Resources.none())) {
-            maxResource = Resources.clone(parentMaxRes);
-          }
+        // If child's max resource is not set, but its parent max resource is
+        // set, we must set child max resource to its parent's.
+        if (maxResource.equals(Resources.none()) &&
+            !minResource.equals(Resources.none()) &&
+            !parentMax.equals(Resources.none())) {
+          maxResource = Resources.clone(parentMax);
         }
       }
 
+      validateMinResourceIsNotGreaterThanMaxResource(minResource, maxResource, clusterResource,
+          "Min resource configuration "
+              + minResource + " is greater than its max value:" + maxResource
+              + " in queue:" + getQueuePath());
+
       LOG.debug("Updating absolute resource configuration for queue:{} as"
               + " minResource={} and maxResource={}", getQueuePath(), minResource,
           maxResource);
@@ -663,6 +657,16 @@ public abstract class AbstractCSQueue implements CSQueue {
     }
   }
 
+  private void validateMinResourceIsNotGreaterThanMaxResource(Resource minResource,
+                                                              Resource maxResource,
+                                                              Resource clusterResource,
+                                                              String validationError) {
+    if (!maxResource.equals(Resources.none()) && Resources.greaterThan(
+        resourceCalculator, clusterResource, minResource, maxResource)) {
+      throw new IllegalArgumentException(validationError);
+    }
+  }
+
   private void validateAbsoluteVsPercentageCapacityConfig(
       CapacityConfigType localType) {
     if (!queuePath.equals("root")