| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.yarn.server.resourcemanager.scheduler; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.api.records.Resource; |
| import org.apache.hadoop.yarn.api.records.ResourceRequest; |
| import org.apache.hadoop.yarn.server.resourcemanager.MockNodes; |
| import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerNode; |
| import org.apache.hadoop.yarn.util.resource.ResourceUtils; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * Test class to verify ClusterNodeTracker. Using FSSchedulerNode without |
| * loss of generality. |
| */ |
| public class TestClusterNodeTracker { |
| private ClusterNodeTracker<FSSchedulerNode> nodeTracker; |
| |
| @Before |
| public void setup() { |
| nodeTracker = new ClusterNodeTracker<>(); |
| } |
| |
| private void addEight4x4Nodes() { |
| MockNodes.resetHostIds(); |
| List<RMNode> rmNodes = |
| MockNodes.newNodes(2, 4, Resource.newInstance(4096, 4)); |
| for (RMNode rmNode : rmNodes) { |
| nodeTracker.addNode(new FSSchedulerNode(rmNode, false)); |
| } |
| } |
| |
| @Test |
| public void testGetNodeCount() { |
| addEight4x4Nodes(); |
| assertEquals("Incorrect number of nodes in the cluster", |
| 8, nodeTracker.nodeCount()); |
| |
| assertEquals("Incorrect number of nodes in each rack", |
| 4, nodeTracker.nodeCount("rack0")); |
| } |
| |
| @Test |
| public void testGetNodesForResourceName() throws Exception { |
| addEight4x4Nodes(); |
| assertEquals("Incorrect number of nodes matching ANY", |
| 8, nodeTracker.getNodesByResourceName(ResourceRequest.ANY).size()); |
| |
| assertEquals("Incorrect number of nodes matching rack", |
| 4, nodeTracker.getNodesByResourceName("rack0").size()); |
| |
| assertEquals("Incorrect number of nodes matching node", |
| 1, nodeTracker.getNodesByResourceName("host0").size()); |
| } |
| |
| @Test |
| public void testMaxAllowedAllocation() { |
| // Add a third resource |
| Configuration conf = new Configuration(); |
| |
| conf.set(YarnConfiguration.RESOURCE_TYPES, "test1"); |
| |
| ResourceUtils.resetResourceTypes(conf); |
| setup(); |
| |
| Resource maximum = Resource.newInstance(10240, 10, |
| Collections.singletonMap("test1", 10L)); |
| |
| nodeTracker.setConfiguredMaxAllocation(maximum); |
| |
| Resource result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("With no nodes added, the ClusterNodeTracker did not return " |
| + "the configured max allocation", maximum, result); |
| |
| List<RMNode> smallNodes = |
| MockNodes.newNodes(1, 1, Resource.newInstance(1024, 2, |
| Collections.singletonMap("test1", 4L))); |
| FSSchedulerNode smallNode = new FSSchedulerNode(smallNodes.get(0), false); |
| List<RMNode> mediumNodes = |
| MockNodes.newNodes(1, 1, Resource.newInstance(4096, 2, |
| Collections.singletonMap("test1", 2L))); |
| FSSchedulerNode mediumNode = new FSSchedulerNode(mediumNodes.get(0), false); |
| List<RMNode> largeNodes = |
| MockNodes.newNodes(1, 1, Resource.newInstance(16384, 4, |
| Collections.singletonMap("test1", 1L))); |
| FSSchedulerNode largeNode = new FSSchedulerNode(largeNodes.get(0), false); |
| |
| nodeTracker.addNode(mediumNode); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("With a single node added, the ClusterNodeTracker did not " |
| + "return that node's resources as the maximum allocation", |
| mediumNodes.get(0).getTotalCapability(), result); |
| |
| nodeTracker.addNode(smallNode); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("With two nodes added, the ClusterNodeTracker did not " |
| + "return a the maximum allocation that was the max of their aggregate " |
| + "resources", |
| Resource.newInstance(4096, 2, Collections.singletonMap("test1", 4L)), |
| result); |
| |
| nodeTracker.removeNode(smallNode.getNodeID()); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("After removing a node, the ClusterNodeTracker did not " |
| + "recalculate the adjusted maximum allocation correctly", |
| mediumNodes.get(0).getTotalCapability(), result); |
| |
| nodeTracker.addNode(largeNode); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("With two nodes added, the ClusterNodeTracker did not " |
| + "return a the maximum allocation that was the max of their aggregate " |
| + "resources", |
| Resource.newInstance(10240, 4, Collections.singletonMap("test1", 2L)), |
| result); |
| |
| nodeTracker.removeNode(largeNode.getNodeID()); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("After removing a node, the ClusterNodeTracker did not " |
| + "recalculate the adjusted maximum allocation correctly", |
| mediumNodes.get(0).getTotalCapability(), result); |
| |
| nodeTracker.removeNode(mediumNode.getNodeID()); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("After removing all nodes, the ClusterNodeTracker did not " |
| + "return the configured maximum allocation", maximum, result); |
| |
| nodeTracker.addNode(smallNode); |
| nodeTracker.addNode(mediumNode); |
| nodeTracker.addNode(largeNode); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("With three nodes added, the ClusterNodeTracker did not " |
| + "return a the maximum allocation that was the max of their aggregate " |
| + "resources", |
| Resource.newInstance(10240, 4, Collections.singletonMap("test1", 4L)), |
| result); |
| |
| nodeTracker.removeNode(smallNode.getNodeID()); |
| nodeTracker.removeNode(mediumNode.getNodeID()); |
| nodeTracker.removeNode(largeNode.getNodeID()); |
| |
| result = nodeTracker.getMaxAllowedAllocation(); |
| |
| assertEquals("After removing all nodes, the ClusterNodeTracker did not " |
| + "return the configured maximum allocation", maximum, result); |
| } |
| } |