| /** |
| * 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.federation.policies.router; |
| |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.server.federation.policies.dao.WeightedPolicyInfo; |
| import org.apache.hadoop.yarn.server.federation.store.records.SubClusterId; |
| import org.apache.hadoop.yarn.server.federation.store.records.SubClusterIdInfo; |
| import org.apache.hadoop.yarn.server.federation.store.records.SubClusterInfo; |
| import org.apache.hadoop.yarn.server.federation.store.records.SubClusterState; |
| import org.apache.hadoop.yarn.server.federation.utils.FederationPoliciesTestUtil; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Simple test class for the {@link PriorityRouterPolicy}. Tests that the |
| * weights are correctly used for ordering the choice of sub-clusters. |
| */ |
| public class TestPriorityRouterPolicy extends BaseRouterPoliciesTest { |
| |
| @Before |
| public void setUp() throws Exception { |
| setPolicy(new PriorityRouterPolicy()); |
| setPolicyInfo(new WeightedPolicyInfo()); |
| Map<SubClusterIdInfo, Float> routerWeights = new HashMap<>(); |
| Map<SubClusterIdInfo, Float> amrmWeights = new HashMap<>(); |
| |
| // simulate 20 subclusters with a 5% chance of being inactive |
| for (int i = 0; i < 20; i++) { |
| SubClusterIdInfo sc = new SubClusterIdInfo("sc" + i); |
| |
| // with 5% omit a subcluster |
| if (getRand().nextFloat() < 0.95f || i == 5) { |
| SubClusterInfo sci = mock(SubClusterInfo.class); |
| when(sci.getState()).thenReturn(SubClusterState.SC_RUNNING); |
| when(sci.getSubClusterId()).thenReturn(sc.toId()); |
| getActiveSubclusters().put(sc.toId(), sci); |
| } |
| float weight = getRand().nextFloat(); |
| if (i == 5) { |
| weight = 1.1f; // guaranteed to be the largest. |
| } |
| |
| // 5% chance we omit one of the weights |
| if (i <= 5 || getRand().nextFloat() > 0.05f) { |
| routerWeights.put(sc, weight); |
| amrmWeights.put(sc, weight); |
| } |
| } |
| getPolicyInfo().setRouterPolicyWeights(routerWeights); |
| getPolicyInfo().setAMRMPolicyWeights(amrmWeights); |
| FederationPoliciesTestUtil.initializePolicyContext(getPolicy(), |
| getPolicyInfo(), getActiveSubclusters()); |
| |
| } |
| |
| @Test |
| public void testPickLowestWeight() throws YarnException { |
| SubClusterId chosen = ((FederationRouterPolicy) getPolicy()) |
| .getHomeSubcluster(getApplicationSubmissionContext(), null); |
| Assert.assertEquals("sc5", chosen.getId()); |
| } |
| |
| } |