Esempio n. 1
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        public virtual void Setup()
        {
            // setup a context / conf
            csConf = new CapacitySchedulerConfiguration();
            YarnConfiguration conf = new YarnConfiguration();

            csContext = Org.Mockito.Mockito.Mock <CapacitySchedulerContext>();
            Org.Mockito.Mockito.When(csContext.GetConfiguration()).ThenReturn(csConf);
            Org.Mockito.Mockito.When(csContext.GetConf()).ThenReturn(conf);
            Org.Mockito.Mockito.When(csContext.GetMinimumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(Gb, 1));
            Org.Mockito.Mockito.When(csContext.GetMaximumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(16 * Gb, 32));
            Org.Mockito.Mockito.When(csContext.GetClusterResource()).ThenReturn(Resources.CreateResource
                                                                                    (100 * 16 * Gb, 100 * 32));
            Org.Mockito.Mockito.When(csContext.GetResourceCalculator()).ThenReturn(resourceCalculator
                                                                                   );
            RMContext mockRMContext = TestUtils.GetMockRMContext();

            Org.Mockito.Mockito.When(csContext.GetRMContext()).ThenReturn(mockRMContext);
            // create a queue
            PlanQueue pq = new PlanQueue(csContext, "root", null, null);

            reservationQueue = new ReservationQueue(csContext, "a", pq);
        }
Esempio n. 2
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        /// <exception cref="System.IO.IOException"/>
        public PlanQueue(CapacitySchedulerContext cs, string queueName, CSQueue parent, CSQueue
                         old)
            : base(cs, queueName, parent, old)
        {
            this.schedulerContext = cs;
            // Set the reservation queue attributes for the Plan
            CapacitySchedulerConfiguration conf = cs.GetConfiguration();
            string queuePath             = base.GetQueuePath();
            int    maxAppsForReservation = conf.GetMaximumApplicationsPerQueue(queuePath);

            showReservationsAsQueues = conf.GetShowReservationAsQueues(queuePath);
            if (maxAppsForReservation < 0)
            {
                maxAppsForReservation = (int)(CapacitySchedulerConfiguration.DefaultMaximumSystemApplicatiions
                                              * base.GetAbsoluteCapacity());
            }
            int   userLimit       = conf.GetUserLimit(queuePath);
            float userLimitFactor = conf.GetUserLimitFactor(queuePath);
            int   maxAppsPerUserForReservation = (int)(maxAppsForReservation * (userLimit / 100.0f
                                                                                ) * userLimitFactor);

            UpdateQuotas(userLimit, userLimitFactor, maxAppsForReservation, maxAppsPerUserForReservation
                         );
            StringBuilder queueInfo = new StringBuilder();

            queueInfo.Append("Created Plan Queue: ").Append(queueName).Append("\nwith capacity: ["
                                                                              ).Append(base.GetCapacity()).Append("]\nwith max capacity: [").Append(base.GetMaximumCapacity
                                                                                                                                                        ()).Append("\nwith max reservation apps: [").Append(maxAppsForReservation).Append
                ("]\nwith max reservation apps per user: [").Append(maxAppsPerUserForReservation
                                                                    ).Append("]\nwith user limit: [").Append(userLimit).Append("]\nwith user limit factor: ["
                                                                                                                               ).Append(userLimitFactor).Append("].");
            Log.Info(queueInfo.ToString());
        }
Esempio n. 3
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        public virtual void SetUp()
        {
            CapacityScheduler spyCs = new CapacityScheduler();

            cs           = Org.Mockito.Mockito.Spy(spyCs);
            scheduler    = cs;
            rmContext    = TestUtils.GetMockRMContext();
            spyRMContext = Org.Mockito.Mockito.Spy(rmContext);
            ConcurrentMap <ApplicationId, RMApp> spyApps = Org.Mockito.Mockito.Spy(new ConcurrentHashMap
                                                                                   <ApplicationId, RMApp>());
            RMApp rmApp = Org.Mockito.Mockito.Mock <RMApp>();

            Org.Mockito.Mockito.When(rmApp.GetRMAppAttempt((ApplicationAttemptId)Matchers.Any
                                                               ())).ThenReturn(null);
            Org.Mockito.Mockito.DoReturn(rmApp).When(spyApps)[(ApplicationId)Matchers.Any()];
            Org.Mockito.Mockito.When(spyRMContext.GetRMApps()).ThenReturn(spyApps);
            Org.Mockito.Mockito.When(spyRMContext.GetScheduler()).ThenReturn(scheduler);
            CapacitySchedulerConfiguration csConf = new CapacitySchedulerConfiguration();

            ReservationSystemTestUtil.SetupQueueConfiguration(csConf);
            cs.SetConf(csConf);
            csContext = Org.Mockito.Mockito.Mock <CapacitySchedulerContext>();
            Org.Mockito.Mockito.When(csContext.GetConfiguration()).ThenReturn(csConf);
            Org.Mockito.Mockito.When(csContext.GetConf()).ThenReturn(csConf);
            Org.Mockito.Mockito.When(csContext.GetMinimumResourceCapability()).ThenReturn(minAlloc
                                                                                          );
            Org.Mockito.Mockito.When(csContext.GetMaximumResourceCapability()).ThenReturn(maxAlloc
                                                                                          );
            Org.Mockito.Mockito.When(csContext.GetClusterResource()).ThenReturn(Resources.CreateResource
                                                                                    (100 * 16 * Gb, 100 * 32));
            Org.Mockito.Mockito.When(scheduler.GetClusterResource()).ThenReturn(Resources.CreateResource
                                                                                    (125 * Gb, 125));
            Org.Mockito.Mockito.When(csContext.GetResourceCalculator()).ThenReturn(new DefaultResourceCalculator
                                                                                       ());
            RMContainerTokenSecretManager containerTokenSecretManager = new RMContainerTokenSecretManager
                                                                            (csConf);

            containerTokenSecretManager.RollMasterKey();
            Org.Mockito.Mockito.When(csContext.GetContainerTokenSecretManager()).ThenReturn(containerTokenSecretManager
                                                                                            );
            cs.SetRMContext(spyRMContext);
            cs.Init(csConf);
            cs.Start();
            SetupPlanFollower();
        }
Esempio n. 4
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        public virtual void SetUp()
        {
            CapacitySchedulerConfiguration csConf = new CapacitySchedulerConfiguration();
            YarnConfiguration conf = new YarnConfiguration();

            SetupQueueConfiguration(csConf);
            rmContext = TestUtils.GetMockRMContext();
            CapacitySchedulerContext csContext = Org.Mockito.Mockito.Mock <CapacitySchedulerContext
                                                                           >();

            Org.Mockito.Mockito.When(csContext.GetConfiguration()).ThenReturn(csConf);
            Org.Mockito.Mockito.When(csContext.GetConf()).ThenReturn(conf);
            Org.Mockito.Mockito.When(csContext.GetMinimumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(Gb, 1));
            Org.Mockito.Mockito.When(csContext.GetMaximumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(16 * Gb, 32));
            Org.Mockito.Mockito.When(csContext.GetClusterResource()).ThenReturn(Resources.CreateResource
                                                                                    (10 * 16 * Gb, 10 * 32));
            Org.Mockito.Mockito.When(csContext.GetApplicationComparator()).ThenReturn(CapacityScheduler
                                                                                      .applicationComparator);
            Org.Mockito.Mockito.When(csContext.GetQueueComparator()).ThenReturn(CapacityScheduler
                                                                                .queueComparator);
            Org.Mockito.Mockito.When(csContext.GetResourceCalculator()).ThenReturn(resourceCalculator
                                                                                   );
            Org.Mockito.Mockito.When(csContext.GetRMContext()).ThenReturn(rmContext);
            RMContainerTokenSecretManager containerTokenSecretManager = new RMContainerTokenSecretManager
                                                                            (conf);

            containerTokenSecretManager.RollMasterKey();
            Org.Mockito.Mockito.When(csContext.GetContainerTokenSecretManager()).ThenReturn(containerTokenSecretManager
                                                                                            );
            IDictionary <string, CSQueue> queues = new Dictionary <string, CSQueue>();
            CSQueue root = CapacityScheduler.ParseQueue(csContext, csConf, null, "root", queues
                                                        , queues, TestUtils.spyHook);

            queue = Org.Mockito.Mockito.Spy(new LeafQueue(csContext, A, root, null));
            // Stub out ACL checks
            Org.Mockito.Mockito.DoReturn(true).When(queue).HasAccess(Matchers.Any <QueueACL>()
                                                                     , Matchers.Any <UserGroupInformation>());
            // Some default values
            Org.Mockito.Mockito.DoReturn(100).When(queue).GetMaxApplications();
            Org.Mockito.Mockito.DoReturn(25).When(queue).GetMaxApplicationsPerUser();
        }
Esempio n. 5
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 public virtual void SetUp()
 {
     rmContext = TestUtils.GetMockRMContext();
     conf      = new YarnConfiguration();
     csConf    = new CapacitySchedulerConfiguration();
     csContext = Org.Mockito.Mockito.Mock <CapacitySchedulerContext>();
     Org.Mockito.Mockito.When(csContext.GetConf()).ThenReturn(conf);
     Org.Mockito.Mockito.When(csContext.GetConfiguration()).ThenReturn(csConf);
     Org.Mockito.Mockito.When(csContext.GetMinimumResourceCapability()).ThenReturn(Resources
                                                                                   .CreateResource(Gb, 1));
     Org.Mockito.Mockito.When(csContext.GetMaximumResourceCapability()).ThenReturn(Resources
                                                                                   .CreateResource(16 * Gb, 32));
     Org.Mockito.Mockito.When(csContext.GetClusterResource()).ThenReturn(Resources.CreateResource
                                                                             (100 * 16 * Gb, 100 * 32));
     Org.Mockito.Mockito.When(csContext.GetApplicationComparator()).ThenReturn(CapacityScheduler
                                                                               .applicationComparator);
     Org.Mockito.Mockito.When(csContext.GetQueueComparator()).ThenReturn(CapacityScheduler
                                                                         .queueComparator);
     Org.Mockito.Mockito.When(csContext.GetResourceCalculator()).ThenReturn(resourceComparator
                                                                            );
     Org.Mockito.Mockito.When(csContext.GetRMContext()).ThenReturn(rmContext);
 }
Esempio n. 6
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        /// <exception cref="System.IO.IOException"/>
        public ParentQueue(CapacitySchedulerContext cs, string queueName, CSQueue parent,
                           CSQueue old)
            : base(cs, queueName, parent, old)
        {
            this.scheduler       = cs;
            this.queueComparator = cs.GetQueueComparator();
            this.rootQueue       = (parent == null);
            float rawCapacity = cs.GetConfiguration().GetNonLabeledQueueCapacity(GetQueuePath
                                                                                     ());

            if (rootQueue && (rawCapacity != CapacitySchedulerConfiguration.MaximumCapacityValue
                              ))
            {
                throw new ArgumentException("Illegal " + "capacity of " + rawCapacity + " for queue "
                                            + queueName + ". Must be " + CapacitySchedulerConfiguration.MaximumCapacityValue
                                            );
            }
            this.childQueues = new TreeSet <CSQueue>(queueComparator);
            SetupQueueConfigs(cs.GetClusterResource());
            Log.Info("Initialized parent-queue " + queueName + " name=" + queueName + ", fullname="
                     + GetQueuePath());
        }
Esempio n. 7
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 protected internal virtual void SetupConfigurableCapacities()
 {
     CSQueueUtils.LoadUpdateAndCheckCapacities(GetQueuePath(), csContext.GetConfiguration
                                                   (), queueCapacities, parent == null ? null : parent.GetQueueCapacities());
 }
Esempio n. 8
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        /// <exception cref="System.IO.IOException"/>
        public AbstractCSQueue(CapacitySchedulerContext cs, string queueName, CSQueue parent
                               , CSQueue old)
        {
            // Track resource usage-by-label like used-resource/pending-resource, etc.
            // Track capacities like used-capcity/abs-used-capacity/capacity/abs-capacity,
            // etc.
            this.labelManager       = cs.GetRMContext().GetNodeLabelManager();
            this.parent             = parent;
            this.queueName          = queueName;
            this.resourceCalculator = cs.GetResourceCalculator();
            // must be called after parent and queueName is set
            this.metrics = old != null?old.GetMetrics() : QueueMetrics.ForQueue(GetQueuePath
                                                                                    (), parent, cs.GetConfiguration().GetEnableUserMetrics(), cs.GetConf());

            this.csContext         = cs;
            this.minimumAllocation = csContext.GetMinimumResourceCapability();
            // initialize ResourceUsage
            queueUsage  = new ResourceUsage();
            queueEntity = new PrivilegedEntity(PrivilegedEntity.EntityType.Queue, GetQueuePath
                                                   ());
            // initialize QueueCapacities
            queueCapacities = new QueueCapacities(parent == null);
        }
Esempio n. 9
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        public virtual void TestHeadroom()
        {
            CapacitySchedulerConfiguration csConf = new CapacitySchedulerConfiguration();

            csConf.SetUserLimit(CapacitySchedulerConfiguration.Root + "." + A, 25);
            SetupQueueConfiguration(csConf);
            YarnConfiguration        conf      = new YarnConfiguration();
            CapacitySchedulerContext csContext = Org.Mockito.Mockito.Mock <CapacitySchedulerContext
                                                                           >();

            Org.Mockito.Mockito.When(csContext.GetConfiguration()).ThenReturn(csConf);
            Org.Mockito.Mockito.When(csContext.GetConf()).ThenReturn(conf);
            Org.Mockito.Mockito.When(csContext.GetMinimumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(Gb));
            Org.Mockito.Mockito.When(csContext.GetMaximumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(16 * Gb));
            Org.Mockito.Mockito.When(csContext.GetApplicationComparator()).ThenReturn(CapacityScheduler
                                                                                      .applicationComparator);
            Org.Mockito.Mockito.When(csContext.GetQueueComparator()).ThenReturn(CapacityScheduler
                                                                                .queueComparator);
            Org.Mockito.Mockito.When(csContext.GetResourceCalculator()).ThenReturn(resourceCalculator
                                                                                   );
            Org.Mockito.Mockito.When(csContext.GetRMContext()).ThenReturn(rmContext);
            // Say cluster has 100 nodes of 16G each
            Org.Apache.Hadoop.Yarn.Api.Records.Resource clusterResource = Resources.CreateResource
                                                                              (100 * 16 * Gb);
            Org.Mockito.Mockito.When(csContext.GetClusterResource()).ThenReturn(clusterResource
                                                                                );
            IDictionary <string, CSQueue> queues = new Dictionary <string, CSQueue>();

            CapacityScheduler.ParseQueue(csContext, csConf, null, "root", queues, queues, TestUtils
                                         .spyHook);
            // Manipulate queue 'a'
            LeafQueue         queue         = TestLeafQueue.StubLeafQueue((LeafQueue)queues[A]);
            string            host_0        = "host_0";
            string            rack_0        = "rack_0";
            FiCaSchedulerNode node_0        = TestUtils.GetMockNode(host_0, rack_0, 0, 16 * Gb);
            string            user_0        = "user_0";
            string            user_1        = "user_1";
            RecordFactory     recordFactory = RecordFactoryProvider.GetRecordFactory(null);
            RMContext         rmContext     = TestUtils.GetMockRMContext();
            RMContext         spyRMContext  = Org.Mockito.Mockito.Spy(rmContext);
            ConcurrentMap <ApplicationId, RMApp> spyApps = Org.Mockito.Mockito.Spy(new ConcurrentHashMap
                                                                                   <ApplicationId, RMApp>());
            RMApp           rmApp             = Org.Mockito.Mockito.Mock <RMApp>();
            ResourceRequest amResourceRequest = Org.Mockito.Mockito.Mock <ResourceRequest>();

            Org.Apache.Hadoop.Yarn.Api.Records.Resource amResource = Resources.CreateResource
                                                                         (0, 0);
            Org.Mockito.Mockito.When(amResourceRequest.GetCapability()).ThenReturn(amResource
                                                                                   );
            Org.Mockito.Mockito.When(rmApp.GetAMResourceRequest()).ThenReturn(amResourceRequest
                                                                              );
            Org.Mockito.Mockito.DoReturn(rmApp).When(spyApps)[(ApplicationId)Matchers.Any()];
            Org.Mockito.Mockito.When(spyRMContext.GetRMApps()).ThenReturn(spyApps);
            Priority priority_1 = TestUtils.CreateMockPriority(1);
            // Submit first application with some resource-requests from user_0,
            // and check headroom
            ApplicationAttemptId appAttemptId_0_0 = TestUtils.GetMockApplicationAttemptId(0,
                                                                                          0);
            FiCaSchedulerApp app_0_0 = new FiCaSchedulerApp(appAttemptId_0_0, user_0, queue,
                                                            queue.GetActiveUsersManager(), spyRMContext);

            queue.SubmitApplicationAttempt(app_0_0, user_0);
            IList <ResourceRequest> app_0_0_requests = new AList <ResourceRequest>();

            app_0_0_requests.AddItem(TestUtils.CreateResourceRequest(ResourceRequest.Any, 1 *
                                                                     Gb, 2, true, priority_1, recordFactory));
            app_0_0.UpdateResourceRequests(app_0_0_requests);
            // Schedule to compute
            queue.AssignContainers(clusterResource, node_0, new ResourceLimits(clusterResource
                                                                               ));
            Org.Apache.Hadoop.Yarn.Api.Records.Resource expectedHeadroom = Resources.CreateResource
                                                                               (10 * 16 * Gb, 1);
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_0_0.GetHeadroom());
            // Submit second application from user_0, check headroom
            ApplicationAttemptId appAttemptId_0_1 = TestUtils.GetMockApplicationAttemptId(1,
                                                                                          0);
            FiCaSchedulerApp app_0_1 = new FiCaSchedulerApp(appAttemptId_0_1, user_0, queue,
                                                            queue.GetActiveUsersManager(), spyRMContext);

            queue.SubmitApplicationAttempt(app_0_1, user_0);
            IList <ResourceRequest> app_0_1_requests = new AList <ResourceRequest>();

            app_0_1_requests.AddItem(TestUtils.CreateResourceRequest(ResourceRequest.Any, 1 *
                                                                     Gb, 2, true, priority_1, recordFactory));
            app_0_1.UpdateResourceRequests(app_0_1_requests);
            // Schedule to compute
            queue.AssignContainers(clusterResource, node_0, new ResourceLimits(clusterResource
                                                                               ));
            // Schedule to compute
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_0_0.GetHeadroom());
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_0_1.GetHeadroom());
            // no change
            // Submit first application from user_1, check  for new headroom
            ApplicationAttemptId appAttemptId_1_0 = TestUtils.GetMockApplicationAttemptId(2,
                                                                                          0);
            FiCaSchedulerApp app_1_0 = new FiCaSchedulerApp(appAttemptId_1_0, user_1, queue,
                                                            queue.GetActiveUsersManager(), spyRMContext);

            queue.SubmitApplicationAttempt(app_1_0, user_1);
            IList <ResourceRequest> app_1_0_requests = new AList <ResourceRequest>();

            app_1_0_requests.AddItem(TestUtils.CreateResourceRequest(ResourceRequest.Any, 1 *
                                                                     Gb, 2, true, priority_1, recordFactory));
            app_1_0.UpdateResourceRequests(app_1_0_requests);
            // Schedule to compute
            queue.AssignContainers(clusterResource, node_0, new ResourceLimits(clusterResource
                                                                               ));
            // Schedule to compute
            expectedHeadroom = Resources.CreateResource(10 * 16 * Gb / 2, 1);
            // changes
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_0_0.GetHeadroom());
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_0_1.GetHeadroom());
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_1_0.GetHeadroom());
            // Now reduce cluster size and check for the smaller headroom
            clusterResource = Resources.CreateResource(90 * 16 * Gb);
            queue.AssignContainers(clusterResource, node_0, new ResourceLimits(clusterResource
                                                                               ));
            // Schedule to compute
            expectedHeadroom = Resources.CreateResource(9 * 16 * Gb / 2, 1);
            // changes
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_0_0.GetHeadroom());
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_0_1.GetHeadroom());
            NUnit.Framework.Assert.AreEqual(expectedHeadroom, app_1_0.GetHeadroom());
        }
Esempio n. 10
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        public virtual void TestLimitsComputation()
        {
            CapacitySchedulerConfiguration csConf = new CapacitySchedulerConfiguration();

            SetupQueueConfiguration(csConf);
            YarnConfiguration        conf      = new YarnConfiguration();
            CapacitySchedulerContext csContext = Org.Mockito.Mockito.Mock <CapacitySchedulerContext
                                                                           >();

            Org.Mockito.Mockito.When(csContext.GetConfiguration()).ThenReturn(csConf);
            Org.Mockito.Mockito.When(csContext.GetConf()).ThenReturn(conf);
            Org.Mockito.Mockito.When(csContext.GetMinimumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(Gb, 1));
            Org.Mockito.Mockito.When(csContext.GetMaximumResourceCapability()).ThenReturn(Resources
                                                                                          .CreateResource(16 * Gb, 16));
            Org.Mockito.Mockito.When(csContext.GetApplicationComparator()).ThenReturn(CapacityScheduler
                                                                                      .applicationComparator);
            Org.Mockito.Mockito.When(csContext.GetQueueComparator()).ThenReturn(CapacityScheduler
                                                                                .queueComparator);
            Org.Mockito.Mockito.When(csContext.GetResourceCalculator()).ThenReturn(resourceCalculator
                                                                                   );
            Org.Mockito.Mockito.When(csContext.GetRMContext()).ThenReturn(rmContext);
            // Say cluster has 100 nodes of 16G each
            Org.Apache.Hadoop.Yarn.Api.Records.Resource clusterResource = Resources.CreateResource
                                                                              (100 * 16 * Gb, 100 * 16);
            Org.Mockito.Mockito.When(csContext.GetClusterResource()).ThenReturn(clusterResource
                                                                                );
            IDictionary <string, CSQueue> queues = new Dictionary <string, CSQueue>();
            CSQueue root = CapacityScheduler.ParseQueue(csContext, csConf, null, "root", queues
                                                        , queues, TestUtils.spyHook);
            LeafQueue queue = (LeafQueue)queues[A];

            Log.Info("Queue 'A' -" + " AMResourceLimit=" + queue.GetAMResourceLimit() + " UserAMResourceLimit="
                     + queue.GetUserAMResourceLimit());
            NUnit.Framework.Assert.AreEqual(queue.GetAMResourceLimit(), Org.Apache.Hadoop.Yarn.Api.Records.Resource
                                            .NewInstance(160 * Gb, 1));
            NUnit.Framework.Assert.AreEqual(queue.GetUserAMResourceLimit(), Org.Apache.Hadoop.Yarn.Api.Records.Resource
                                            .NewInstance(80 * Gb, 1));
            NUnit.Framework.Assert.AreEqual((int)(clusterResource.GetMemory() * queue.GetAbsoluteCapacity
                                                      ()), queue.GetMetrics().GetAvailableMB());
            // Add some nodes to the cluster & test new limits
            clusterResource = Resources.CreateResource(120 * 16 * Gb);
            root.UpdateClusterResource(clusterResource, new ResourceLimits(clusterResource));
            NUnit.Framework.Assert.AreEqual(queue.GetAMResourceLimit(), Org.Apache.Hadoop.Yarn.Api.Records.Resource
                                            .NewInstance(192 * Gb, 1));
            NUnit.Framework.Assert.AreEqual(queue.GetUserAMResourceLimit(), Org.Apache.Hadoop.Yarn.Api.Records.Resource
                                            .NewInstance(96 * Gb, 1));
            NUnit.Framework.Assert.AreEqual((int)(clusterResource.GetMemory() * queue.GetAbsoluteCapacity
                                                      ()), queue.GetMetrics().GetAvailableMB());
            // should return -1 if per queue setting not set
            NUnit.Framework.Assert.AreEqual((int)CapacitySchedulerConfiguration.Undefined, csConf
                                            .GetMaximumApplicationsPerQueue(queue.GetQueuePath()));
            int expectedMaxApps = (int)(CapacitySchedulerConfiguration.DefaultMaximumSystemApplicatiions
                                        * queue.GetAbsoluteCapacity());

            NUnit.Framework.Assert.AreEqual(expectedMaxApps, queue.GetMaxApplications());
            int expectedMaxAppsPerUser = (int)(expectedMaxApps * (queue.GetUserLimit() / 100.0f
                                                                  ) * queue.GetUserLimitFactor());

            NUnit.Framework.Assert.AreEqual(expectedMaxAppsPerUser, queue.GetMaxApplicationsPerUser
                                                ());
            // should default to global setting if per queue setting not set
            NUnit.Framework.Assert.AreEqual((long)CapacitySchedulerConfiguration.DefaultMaximumApplicationmastersResourcePercent
                                            , (long)csConf.GetMaximumApplicationMasterResourcePerQueuePercent(queue.GetQueuePath
                                                                                                                  ()));
            // Change the per-queue max AM resources percentage.
            csConf.SetFloat("yarn.scheduler.capacity." + queue.GetQueuePath() + ".maximum-am-resource-percent"
                            , 0.5f);
            // Re-create queues to get new configs.
            queues = new Dictionary <string, CSQueue>();
            root   = CapacityScheduler.ParseQueue(csContext, csConf, null, "root", queues, queues
                                                  , TestUtils.spyHook);
            clusterResource = Resources.CreateResource(100 * 16 * Gb);
            queue           = (LeafQueue)queues[A];
            NUnit.Framework.Assert.AreEqual((long)0.5, (long)csConf.GetMaximumApplicationMasterResourcePerQueuePercent
                                                (queue.GetQueuePath()));
            NUnit.Framework.Assert.AreEqual(queue.GetAMResourceLimit(), Org.Apache.Hadoop.Yarn.Api.Records.Resource
                                            .NewInstance(800 * Gb, 1));
            NUnit.Framework.Assert.AreEqual(queue.GetUserAMResourceLimit(), Org.Apache.Hadoop.Yarn.Api.Records.Resource
                                            .NewInstance(400 * Gb, 1));
            // Change the per-queue max applications.
            csConf.SetInt("yarn.scheduler.capacity." + queue.GetQueuePath() + ".maximum-applications"
                          , 9999);
            // Re-create queues to get new configs.
            queues = new Dictionary <string, CSQueue>();
            root   = CapacityScheduler.ParseQueue(csContext, csConf, null, "root", queues, queues
                                                  , TestUtils.spyHook);
            queue = (LeafQueue)queues[A];
            NUnit.Framework.Assert.AreEqual(9999, (int)csConf.GetMaximumApplicationsPerQueue(
                                                queue.GetQueuePath()));
            NUnit.Framework.Assert.AreEqual(9999, queue.GetMaxApplications());
            expectedMaxAppsPerUser = (int)(9999 * (queue.GetUserLimit() / 100.0f) * queue.GetUserLimitFactor
                                               ());
            NUnit.Framework.Assert.AreEqual(expectedMaxAppsPerUser, queue.GetMaxApplicationsPerUser
                                                ());
        }