YARN-10944. AbstractCSQueue: Eliminate code duplication in overloaded versions of setMaxCapacity. Contributed by Andras Gyori

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

@@ -74,6 +74,7 @@ import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 
+import static org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager.NO_LABEL;
 import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.DOT;
 
 public abstract class AbstractCSQueue implements CSQueue {
@@ -279,33 +280,23 @@ public abstract class AbstractCSQueue implements CSQueue {
   }
 
   /**
-   * Set maximum capacity - used only for testing.
+   * Set maximum capacity for empty node label.
    * @param maximumCapacity new max capacity
    */
   @VisibleForTesting
   void setMaxCapacity(float maximumCapacity) {
-    writeLock.lock();
-    try {
-      // Sanity check
-      CSQueueUtils.checkMaxCapacity(this.queuePath,
-          queueCapacities.getCapacity(), maximumCapacity);
-      float absMaxCapacity = CSQueueUtils.computeAbsoluteMaximumCapacity(
-          maximumCapacity, parent);
-      CSQueueUtils.checkAbsoluteCapacity(this.queuePath,
-          queueCapacities.getAbsoluteCapacity(), absMaxCapacity);
-
-      queueCapacities.setMaximumCapacity(maximumCapacity);
-      queueCapacities.setAbsoluteMaximumCapacity(absMaxCapacity);
-    } finally {
-      writeLock.unlock();
-    }
+    internalSetMaximumCapacity(maximumCapacity, NO_LABEL);
   }
 
   /**
-   * Set maximum capacity
+   * Set maximum capacity.
    * @param maximumCapacity new max capacity
    */
   void setMaxCapacity(String nodeLabel, float maximumCapacity) {
+    internalSetMaximumCapacity(maximumCapacity, nodeLabel);
+  }
+
+  private void internalSetMaximumCapacity(float maximumCapacity, String nodeLabel) {
     writeLock.lock();
     try {
       // Sanity check
@@ -323,7 +314,6 @@ public abstract class AbstractCSQueue implements CSQueue {
     }
   }
 
-
   @Override
   public String getDefaultNodeLabelExpression() {
     return this.queueNodeLabelsSettings.getDefaultLabelExpression();
@@ -917,7 +907,7 @@ public abstract class AbstractCSQueue implements CSQueue {
   }
 
   private static String ensurePartition(String partition) {
-    return Optional.ofNullable(partition).orElse(RMNodeLabelsManager.NO_LABEL);
+    return Optional.ofNullable(partition).orElse(NO_LABEL);
   }
 
   @FunctionalInterface
@@ -1016,8 +1006,8 @@ public abstract class AbstractCSQueue implements CSQueue {
 
     // Add NO_LABEL also to this list as NO_LABEL also can be granted with
     // resource in many general cases.
-    if (!nodeLabels.contains(RMNodeLabelsManager.NO_LABEL)) {
-      nodeLabels.add(RMNodeLabelsManager.NO_LABEL);
+    if (!nodeLabels.contains(NO_LABEL)) {
+      nodeLabels.add(NO_LABEL);
     }
     return nodeLabels;
   }