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
());
}