| /** |
| * 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.mapreduce.v2.app.rm; |
| |
| import org.apache.hadoop.yarn.api.records.Resource; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.util.EnumSet; |
| |
| import static org.apache.hadoop.yarn.proto.YarnServiceProtos.*; |
| |
| public class TestResourceCalculatorUtils { |
| @Test |
| public void testComputeAvailableContainers() throws Exception { |
| Resource clusterAvailableResources = Resource.newInstance(81920, 40); |
| |
| Resource nonZeroResource = Resource.newInstance(1024, 2); |
| |
| int expectedNumberOfContainersForMemory = 80; |
| int expectedNumberOfContainersForCPU = 20; |
| |
| verifyDifferentResourceTypes(clusterAvailableResources, nonZeroResource, |
| expectedNumberOfContainersForMemory, |
| expectedNumberOfContainersForCPU); |
| |
| Resource zeroMemoryResource = Resource.newInstance(0, |
| nonZeroResource.getVirtualCores()); |
| |
| verifyDifferentResourceTypes(clusterAvailableResources, zeroMemoryResource, |
| Integer.MAX_VALUE, |
| expectedNumberOfContainersForCPU); |
| |
| Resource zeroCpuResource = Resource.newInstance( |
| nonZeroResource.getMemorySize(), 0); |
| |
| verifyDifferentResourceTypes(clusterAvailableResources, zeroCpuResource, |
| expectedNumberOfContainersForMemory, |
| expectedNumberOfContainersForMemory); |
| } |
| |
| private void verifyDifferentResourceTypes(Resource clusterAvailableResources, |
| Resource nonZeroResource, int expectedNumberOfContainersForMemoryOnly, |
| int expectedNumberOfContainersOverall) { |
| |
| Assert.assertEquals("Incorrect number of available containers for Memory", |
| expectedNumberOfContainersForMemoryOnly, |
| ResourceCalculatorUtils.computeAvailableContainers( |
| clusterAvailableResources, nonZeroResource, |
| EnumSet.of(SchedulerResourceTypes.MEMORY))); |
| |
| Assert.assertEquals("Incorrect number of available containers overall", |
| expectedNumberOfContainersOverall, |
| ResourceCalculatorUtils.computeAvailableContainers( |
| clusterAvailableResources, nonZeroResource, |
| EnumSet.of(SchedulerResourceTypes.CPU, |
| SchedulerResourceTypes.MEMORY))); |
| } |
| } |