| /** |
| * 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.fair; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.metrics2.AbstractMetric; |
| import org.apache.hadoop.metrics2.MetricsRecord; |
| import org.apache.hadoop.metrics2.impl.MetricsCollectorImpl; |
| import org.apache.hadoop.yarn.server.resourcemanager.MockNodes; |
| import org.apache.hadoop.yarn.server.resourcemanager.MockRM; |
| import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeAddedSchedulerEvent; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeRemovedSchedulerEvent; |
| import org.apache.hadoop.yarn.util.resource.Resources; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| public class TestSchedulingUpdate extends FairSchedulerTestBase { |
| |
| @Override |
| public Configuration createConfiguration() { |
| Configuration conf = super.createConfiguration(); |
| |
| // Make the update loop to never finish to ensure zero update calls |
| conf.setInt( |
| FairSchedulerConfiguration.UPDATE_INTERVAL_MS, |
| Integer.MAX_VALUE); |
| return conf; |
| } |
| |
| @Before |
| public void setup() { |
| conf = createConfiguration(); |
| resourceManager = new MockRM(conf); |
| resourceManager.start(); |
| |
| scheduler = (FairScheduler) resourceManager.getResourceScheduler(); |
| } |
| |
| @After |
| public void teardown() { |
| if (resourceManager != null) { |
| resourceManager.stop(); |
| resourceManager = null; |
| } |
| } |
| |
| @Test (timeout = 3000) |
| public void testSchedulingUpdateOnNodeJoinLeave() throws InterruptedException { |
| |
| verifyNoCalls(); |
| |
| // Add one node |
| String host = "127.0.0.1"; |
| final int memory = 4096; |
| final int cores = 4; |
| RMNode node1 = MockNodes.newNodeInfo( |
| 1, Resources.createResource(memory, cores), 1, host); |
| NodeAddedSchedulerEvent nodeEvent1 = new NodeAddedSchedulerEvent(node1); |
| scheduler.handle(nodeEvent1); |
| |
| long expectedCalls = 1; |
| verifyExpectedCalls(expectedCalls, memory, cores); |
| |
| // Remove the node |
| NodeRemovedSchedulerEvent nodeEvent2 = new NodeRemovedSchedulerEvent(node1); |
| scheduler.handle(nodeEvent2); |
| |
| expectedCalls = 2; |
| verifyExpectedCalls(expectedCalls, 0, 0); |
| } |
| |
| private void verifyExpectedCalls(long expectedCalls, int memory, int vcores) |
| throws InterruptedException { |
| boolean verified = false; |
| int count = 0; |
| while (count < 100) { |
| if (scheduler.fsOpDurations.hasUpdateThreadRunChanged()) { |
| break; |
| } |
| count++; |
| Thread.sleep(10); |
| } |
| assertTrue("Update Thread has not run based on its metrics", |
| scheduler.fsOpDurations.hasUpdateThreadRunChanged()); |
| assertEquals("Root queue metrics memory does not have expected value", |
| memory, scheduler.getRootQueueMetrics().getAvailableMB()); |
| assertEquals("Root queue metrics cpu does not have expected value", |
| vcores, scheduler.getRootQueueMetrics().getAvailableVirtualCores()); |
| |
| MetricsCollectorImpl collector = new MetricsCollectorImpl(); |
| scheduler.fsOpDurations.getMetrics(collector, true); |
| MetricsRecord record = collector.getRecords().get(0); |
| for (AbstractMetric abstractMetric : record.metrics()) { |
| if (abstractMetric.name().contains("UpdateThreadRunNumOps")) { |
| assertEquals("Update Thread did not run expected number of times " + |
| "based on metric record count", |
| expectedCalls, |
| abstractMetric.value()); |
| verified = true; |
| } |
| } |
| assertTrue("Did not find metric for UpdateThreadRunNumOps", verified); |
| } |
| |
| private void verifyNoCalls() { |
| assertFalse("Update thread should not have executed", |
| scheduler.fsOpDurations.hasUpdateThreadRunChanged()); |
| assertEquals("Scheduler queue memory should not have been updated", |
| 0, scheduler.getRootQueueMetrics().getAvailableMB()); |
| assertEquals("Scheduler queue cpu should not have been updated", |
| 0,scheduler.getRootQueueMetrics().getAvailableVirtualCores()); |
| } |
| } |