YARN-10598. CS Flexible Auto Queue Creation: Modify RM /scheduler endpoint to extend the creation type with additional information. Contributed by Benjamin Teke

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/CapacitySchedulerInfo.java

@@ -58,6 +58,8 @@ public class CapacitySchedulerInfo extends SchedulerInfo {
   protected String orderingPolicyInfo;
   protected String mode;
   protected String queueType;
+  protected String creationMethod;
+  protected String autoCreationEligibility;
 
   @XmlTransient
   static final float EPSILON = 1e-8f;
@@ -107,6 +109,9 @@ public class CapacitySchedulerInfo extends SchedulerInfo {
     }
     mode = CapacitySchedulerInfoHelper.getMode(parent);
     queueType = CapacitySchedulerInfoHelper.getQueueType(parent);
+    creationMethod = CapacitySchedulerInfoHelper.getCreationMethod(parent);
+    autoCreationEligibility = CapacitySchedulerInfoHelper
+        .getAutoCreationEligibility(parent);
   }
 
   public float getCapacity() {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/CapacitySchedulerQueueInfo.java

@@ -91,6 +91,8 @@ public class CapacitySchedulerQueueInfo {
   protected LeafQueueTemplateInfo leafQueueTemplate;
   protected String mode;
   protected String queueType;
+  protected String creationMethod;
+  protected String autoCreationEligibility;
 
   CapacitySchedulerQueueInfo() {
   };
@@ -137,6 +139,9 @@ public class CapacitySchedulerQueueInfo {
 
     mode = CapacitySchedulerInfoHelper.getMode(q);
     queueType = CapacitySchedulerInfoHelper.getQueueType(q);
+    creationMethod = CapacitySchedulerInfoHelper.getCreationMethod(q);
+    autoCreationEligibility = CapacitySchedulerInfoHelper
+        .getAutoCreationEligibility(q);
 
     ResourceUsage queueResourceUsage = q.getQueueResourceUsage();
     populateQueueResourceUsage(queueResourceUsage);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/helper/CapacitySchedulerInfoHelper.java

@@ -18,17 +18,44 @@ package org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.helper;
 
 import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.AbstractCSQueue;
-import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.AbstractManagedParentQueue;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.AutoCreatedLeafQueue;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CSQueue;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ManagedParentQueue;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue;
 
+/**
+ * Helper class to describe a queue's type, its creation method and its
+ * eligibility of having auto created children.
+ *
+ * queueType: a queue can be a parent or a leaf.
+ *
+ * creationMethod: the creation method of the queue. Can be: static,
+ * dynamicLegacy or dynamicFlexible. When the legacy way of queue auto-creation
+ * (before YARN-10506) is used, a parent can only be static (ManagedParent)
+ * and a leaf queue can only be dynamicLegacy (no static child queues are
+ * allowed under ManagedParents). When the flexible auto queue creation is used
+ * both a parent and a leaf can be either static or dynamicFlexible.
+ *
+ * autoCreationEligibility: describes whether a queue can have dynamically
+ * created children. Can be: off, legacy or flexible. Every leaf will have this
+ * field with the value off, as they can't have children. When the legacy way
+ * of queue auto-creation (before YARN-10506) is used a ManagedParent will have
+ * the legacy value. When the flexible auto queue creation is used a static
+ * parent can have the value flexible if it is configured to allow auto queue
+ * creation, or off if it is not. A dynamic parent implicitly will have the
+ * value flexible, as a dynamically created parent cannot have static children.
+ */
 public class CapacitySchedulerInfoHelper {
-  private static final String AUTO_CREATED_LEAF = "autoCreatedLeaf";
+  private static final String PARENT_QUEUE = "parent";
-  private static final String STATIC_LEAF = "staticLeaf";
+  private static final String LEAF_QUEUE = "leaf";
-  private static final String AUTO_CREATED_PARENT = "autoCreatedParent";
-  private static final String STATIC_PARENT = "staticParent";
   private static final String UNKNOWN_QUEUE = "unknown";
+  private static final String STATIC_QUEUE = "static";
+  private static final String LEGACY_DYNAMIC_QUEUE = "dynamicLegacy";
+  private static final String FLEXIBLE_DYNAMIC_QUEUE = "dynamicFlexible";
+  private static final String AUTO_CREATION_OFF = "off";
+  private static final String AUTO_CREATION_LEGACY = "legacy";
+  private static final String AUTO_CREATION_FLEXIBLE = "flexible";
 
   private CapacitySchedulerInfoHelper() {}
 
@@ -52,19 +79,31 @@ public class CapacitySchedulerInfoHelper {
 
   public static String getQueueType(CSQueue queue) {
     if (queue instanceof LeafQueue) {
-      if (((AbstractCSQueue)queue).isDynamicQueue()) {
+      return LEAF_QUEUE;
-        return AUTO_CREATED_LEAF;
-      } else {
-        return STATIC_LEAF;
-      }
     } else if (queue instanceof ParentQueue) {
-      if (((AbstractCSQueue)queue).isDynamicQueue()) {
+      return PARENT_QUEUE;
-        return AUTO_CREATED_PARENT;
-      } else {
-        //A ParentQueue with isDynamic=false or an AbstractManagedParentQueue
-        return STATIC_PARENT;
-      }
     }
     return UNKNOWN_QUEUE;
   }
+
+  public static String getCreationMethod(CSQueue queue) {
+    if (queue instanceof AutoCreatedLeafQueue) {
+      return LEGACY_DYNAMIC_QUEUE;
+    } else if (((AbstractCSQueue)queue).isDynamicQueue()) {
+      return FLEXIBLE_DYNAMIC_QUEUE;
+    } else {
+      return STATIC_QUEUE;
+    }
+  }
+
+  public static String getAutoCreationEligibility(CSQueue queue) {
+    if (queue instanceof ManagedParentQueue) {
+      return AUTO_CREATION_LEGACY;
+    } else if (queue instanceof ParentQueue &&
+        ((ParentQueue)queue).isEligibleForAutoQueueCreation()) {
+      return AUTO_CREATION_FLEXIBLE;
+    } else {
+      return AUTO_CREATION_OFF;
+    }
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesCapacitySched.java

@@ -362,7 +362,7 @@ public class TestRMWebServicesCapacitySched extends JerseyTestBase {
     JSONObject info = json.getJSONObject("scheduler");
     assertEquals("incorrect number of elements in: " + info, 1, info.length());
     info = info.getJSONObject("schedulerInfo");
-    assertEquals("incorrect number of elements in: " + info, 16, info.length());
+    assertEquals("incorrect number of elements in: " + info, 18, info.length());
     verifyClusterSchedulerGeneric(info.getString("type"),
         (float) info.getDouble("usedCapacity"),
         (float) info.getDouble("capacity"),
@@ -413,10 +413,10 @@ public class TestRMWebServicesCapacitySched extends JerseyTestBase {
   private void verifySubQueue(JSONObject info, String q,
       float parentAbsCapacity, float parentAbsMaxCapacity)
       throws JSONException, Exception {
-    int numExpectedElements = 31;
+    int numExpectedElements = 33;
     boolean isParentQueue = true;
     if (!info.has("queues")) {
-      numExpectedElements = 49;
+      numExpectedElements = 51;
       isParentQueue = false;
     }
     assertEquals("incorrect number of elements", numExpectedElements, info.length());

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesCapacitySchedDynamicConfig.java

@@ -38,6 +38,8 @@ import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.exceptions.YarnException;
 import org.apache.hadoop.yarn.server.resourcemanager.MockNM;
 import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
+import org.apache.hadoop.yarn.server.resourcemanager.MockRMAppSubmissionData;
+import org.apache.hadoop.yarn.server.resourcemanager.MockRMAppSubmitter;
 import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CSQueueUtils;
@@ -73,11 +75,14 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
   private static final float EXP_ROOT_WEIGHT_IN_WEIGHT_MODE = 1.0F;
   private static final float EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE = 1.0F;
   private static final double DELTA = 0.00001;
-  private static final String STATIC_PARENT = "staticParent";
+  private static final String PARENT_QUEUE = "parent";
-  private static final String STATIC_LEAF = "staticLeaf";
+  private static final String LEAF_QUEUE = "leaf";
+  private static final String STATIC_QUEUE = "static";
+  private static final String FLEXIBLE_DYNAMIC_QUEUE = "dynamicFlexible";
+  private static final String AUTO_CREATION_OFF = "off";
+  private static final String AUTO_CREATION_LEGACY = "legacy";
+  private static final String AUTO_CREATION_FLEXIBLE = "flexible";
   private static final int GB = 1024;
-  private static final String AUTO_CREATED_LEAF = "autoCreatedLeaf";
-  private static final String AUTO_CREATED_PARENT = "autoCreatedParent";
   protected static MockRM RM;
 
   private CapacitySchedulerAutoQueueHandler autoQueueHandler;
@@ -88,13 +93,18 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
     public final float weight;
     public final float normalizedWeight;
     private String queueType;
+    private String creationMethod;
+    private String autoCreationEligibility;
 
     public ExpectedQueueWithProperties(String path, float weight,
-        float normalizedWeight, String queueType) {
+        float normalizedWeight, String queueType, String creationMethod,
+        String autoCreationEligibility) {
       this.path = path;
       this.weight = weight;
       this.normalizedWeight = normalizedWeight;
       this.queueType = queueType;
+      this.creationMethod = creationMethod;
+      this.autoCreationEligibility = autoCreationEligibility;
     }
   }
 
@@ -161,16 +171,41 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
     validateSchedulerInfo(json, "percentage",
         new ExpectedQueueWithProperties("root",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_PARENT),
+            PARENT_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.default",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test1",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test2",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_LEAF));
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF));
+  }
+
+  @Test
+  public void testSchedulerResponsePercentageModeLegacyAutoCreation()
+      throws Exception {
+    Configuration config = CSConfigGenerator
+        .createPercentageConfigLegacyAutoCreation();
+    config.set(YarnConfiguration.SCHEDULER_CONFIGURATION_STORE_CLASS,
+        YarnConfiguration.MEMORY_CONFIGURATION_STORE);
+
+    initResourceManager(config);
+    JSONObject json = sendRequestToSchedulerEndpoint();
+    validateSchedulerInfo(json, "percentage",
+        new ExpectedQueueWithProperties("root",
+            EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
+            PARENT_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
+        new ExpectedQueueWithProperties("root.default",
+            EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
+        new ExpectedQueueWithProperties("root.test1",
+            EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
+        new ExpectedQueueWithProperties("root.managedtest2",
+            EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
+            PARENT_QUEUE, STATIC_QUEUE, AUTO_CREATION_LEGACY));
   }
 
   @Test
@@ -186,16 +221,16 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
     validateSchedulerInfo(json, "absolute",
         new ExpectedQueueWithProperties("root",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_PARENT),
+            PARENT_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.default",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test1",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test2",
             EXP_WEIGHT_NON_WEIGHT_MODE, EXP_NORM_WEIGHT_NON_WEIGHT_MODE,
-            STATIC_LEAF));
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF));
   }
 
   @Test
@@ -211,13 +246,13 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
     validateSchedulerInfo(json, "weight",
         new ExpectedQueueWithProperties("root",
             EXP_ROOT_WEIGHT_IN_WEIGHT_MODE, EXP_ROOT_WEIGHT_IN_WEIGHT_MODE,
-            STATIC_PARENT),
+            PARENT_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.default", 10.0f, 0.5f,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test1", 4.0f, 0.2f,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test2", 6.0f, 0.3f,
-            STATIC_LEAF));
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF));
   }
 
   @Test
@@ -234,13 +269,13 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
     validateSchedulerInfo(json, "weight",
         new ExpectedQueueWithProperties("root",
             EXP_ROOT_WEIGHT_IN_WEIGHT_MODE, EXP_ROOT_WEIGHT_IN_WEIGHT_MODE,
-            STATIC_PARENT),
+            PARENT_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.default", 10.0f, 0.5f,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test1", 4.0f, 0.2f,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test2", 6.0f, 0.3f,
-            STATIC_LEAF));
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF));
 
     //Now create some auto created queues
     createQueue("root.auto1");
@@ -255,42 +290,42 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
     int sumOfWeights = 24;
     ExpectedQueueWithProperties expectedRootQ =
         new ExpectedQueueWithProperties("root",
-        EXP_ROOT_WEIGHT_IN_WEIGHT_MODE, EXP_ROOT_WEIGHT_IN_WEIGHT_MODE,
+            EXP_ROOT_WEIGHT_IN_WEIGHT_MODE, EXP_ROOT_WEIGHT_IN_WEIGHT_MODE,
-        STATIC_PARENT);
+            PARENT_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF);
     validateSchedulerInfo(json, "weight",
         expectedRootQ,
         new ExpectedQueueWithProperties("root.auto1",
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE,
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE / sumOfWeights,
-            AUTO_CREATED_LEAF),
+            LEAF_QUEUE, FLEXIBLE_DYNAMIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.auto2",
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE,
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE / sumOfWeights,
-            AUTO_CREATED_LEAF),
+            LEAF_QUEUE, FLEXIBLE_DYNAMIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.auto3",
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE,
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE / sumOfWeights,
-            AUTO_CREATED_LEAF),
+            LEAF_QUEUE, FLEXIBLE_DYNAMIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.autoParent1",
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE,
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE / sumOfWeights,
-            AUTO_CREATED_PARENT),
+            PARENT_QUEUE, FLEXIBLE_DYNAMIC_QUEUE, AUTO_CREATION_FLEXIBLE),
         new ExpectedQueueWithProperties("root.default", 10.0f,
             10.0f / sumOfWeights,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test1", 4.0f,
             4.0f / sumOfWeights,
-            STATIC_LEAF),
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF),
         new ExpectedQueueWithProperties("root.test2", 6.0f,
             6.0f / sumOfWeights,
-            STATIC_LEAF));
+            LEAF_QUEUE, STATIC_QUEUE, AUTO_CREATION_OFF));
 
     validateChildrenOfParent(json, "root.autoParent1", "weight",
         expectedRootQ,
         new ExpectedQueueWithProperties("root.autoParent1.auto4",
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE,
             EXP_DEFAULT_WEIGHT_IN_WEIGHT_MODE,
-            AUTO_CREATED_LEAF));
+            LEAF_QUEUE, FLEXIBLE_DYNAMIC_QUEUE, AUTO_CREATION_OFF));
   }
 
   private void initAutoQueueHandler() throws Exception {
@@ -433,9 +468,18 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
           Float.parseFloat(obj.getString("normalizedWeight")), DELTA);
 
       //validate queue creation type
-      Assert.assertEquals("Queue creation type does not match for queue " +
+      Assert.assertEquals("Queue type does not match for queue " +
               queuePath,
           expectedQueue.queueType, obj.getString("queueType"));
+
+      Assert.assertEquals("Queue creation type does not match for queue " +
+              queuePath,
+          expectedQueue.creationMethod, obj.getString("creationMethod"));
+
+      Assert.assertEquals("Queue auto creation eligibility does not " +
+              "match for queue " + queuePath,
+          expectedQueue.autoCreationEligibility,
+          obj.getString("autoCreationEligibility"));
     }
 
     //Validate queue paths and modes
@@ -470,6 +514,20 @@ public class TestRMWebServicesCapacitySchedDynamicConfig extends
       return createConfiguration(conf);
     }
 
+    public static Configuration createPercentageConfigLegacyAutoCreation() {
+      Map<String, String> conf = new HashMap<>();
+      conf.put("yarn.scheduler.capacity.root.queues", "default, test1, " +
+          "managedtest2");
+      conf.put("yarn.scheduler.capacity.root.test1.capacity", "50");
+      conf.put("yarn.scheduler.capacity.root.managedtest2.capacity", "50");
+      conf.put("yarn.scheduler.capacity.root.test1.maximum-capacity", "100");
+      conf.put("yarn.scheduler.capacity.root.test1.state", "RUNNING");
+      conf.put("yarn.scheduler.capacity.root.managedtest2.state", "RUNNING");
+      conf.put("yarn.scheduler.capacity.root.managedtest2." +
+          "auto-create-child-queue.enabled", "true");
+      return createConfiguration(conf);
+    }
+
     public static Configuration createAbsoluteConfig() {
       Map<String, String> conf = new HashMap<>();
       conf.put("yarn.scheduler.capacity.root.queues", "default, test1, test2");

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesForCSWithPartitions.java

@@ -574,7 +574,7 @@ public class TestRMWebServicesForCSWithPartitions extends JerseyTestBase {
     JSONObject info = json.getJSONObject("scheduler");
     assertEquals("incorrect number of elements", 1, info.length());
     info = info.getJSONObject("schedulerInfo");
-    assertEquals("incorrect number of elements", 16, info.length());
+    assertEquals("incorrect number of elements", 18, info.length());
     JSONObject capacitiesJsonObject = info.getJSONObject(CAPACITIES);
     JSONArray partitionsCapsArray =
         capacitiesJsonObject.getJSONArray(QUEUE_CAPACITIES_BY_PARTITION);