/**
* 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.applicationsmanager;
import junit.framework.Assert;
import org.apache.hadoop.yarn.api.protocolrecords.AllocateRequest;
import org.apache.hadoop.yarn.api.records.AMResponse;
import org.apache.hadoop.yarn.api.records.NodeReport;
import org.apache.hadoop.yarn.api.records.NodeState;
import org.apache.hadoop.yarn.event.Dispatcher;
import org.apache.hadoop.yarn.event.DrainDispatcher;
import org.apache.hadoop.yarn.event.EventHandler;
import org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService;
import org.apache.hadoop.yarn.server.resourcemanager.MockAM;
import org.apache.hadoop.yarn.server.resourcemanager.MockNM;
import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.SchedulerEvent;
import org.apache.hadoop.yarn.util.BuilderUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
public class TestAMRMRPCNodeUpdates {
private MockRM rm;
ApplicationMasterService amService = null;
DrainDispatcher dispatcher = null;
@Before
public void setUp() {
dispatcher = new DrainDispatcher();
this.rm = new MockRM() {
@Override
protected EventHandler<SchedulerEvent> createSchedulerEventDispatcher() {
return new SchedulerEventDispatcher(this.scheduler) {
@Override
public void handle(SchedulerEvent event) {
scheduler.handle(event);
}
};
}
@Override
protected Dispatcher createDispatcher() {
return dispatcher;
}
};
rm.start();
amService = rm.getApplicationMasterService();
}
@After
public void tearDown() {
if (rm != null) {
this.rm.stop();
}
}
private void syncNodeHeartbeat(MockNM nm, boolean health) throws Exception {
nm.nodeHeartbeat(health);
dispatcher.await();
}
private void syncNodeLost(MockNM nm) throws Exception {
rm.sendNodeStarted(nm);
rm.NMwaitForState(nm.getNodeId(), NodeState.RUNNING);
rm.sendNodeLost(nm);
dispatcher.await();
}
@Test
public void testAMRMUnusableNodes() throws Exception {
MockNM nm1 = rm.registerNode("h1:1234", 10000);
MockNM nm2 = rm.registerNode("h2:1234", 10000);
MockNM nm3 = rm.registerNode("h3:1234", 10000);
MockNM nm4 = rm.registerNode("h4:1234", 10000);
RMApp app1 = rm.submitApp(2000);
// Trigger the scheduling so the AM gets 'launched' on nm1
nm1.nodeHeartbeat(true);
RMAppAttempt attempt1 = app1.getCurrentAppAttempt();
MockAM am1 = rm.sendAMLaunched(attempt1.getAppAttemptId());
// register AM returns no unusable node
am1.registerAppAttempt();
// allocate request returns no updated node
AllocateRequest allocateRequest1 = BuilderUtils.newAllocateRequest(attempt1
.getAppAttemptId(), 0, 0F, null, null);
AMResponse response1 = amService.allocate(allocateRequest1).getAMResponse();
List<NodeReport> updatedNodes = response1.getUpdatedNodes();
Assert.assertEquals(0, updatedNodes.size());
syncNodeHeartbeat(nm4, false);
// allocate request returns updated node
allocateRequest1 = BuilderUtils.newAllocateRequest(attempt1
.getAppAttemptId(), response1.getResponseId(), 0F, null, null);
response1 = amService.allocate(allocateRequest1).getAMResponse();
updatedNodes = response1.getUpdatedNodes();
Assert.assertEquals(1, updatedNodes.size());
NodeReport nr = updatedNodes.iterator().next();
Assert.assertEquals(nm4.getNodeId(), nr.getNodeId());
Assert.assertEquals(NodeState.UNHEALTHY, nr.getNodeState());
// resending the allocate request returns the same result
response1 = amService.allocate(allocateRequest1).getAMResponse();
updatedNodes = response1.getUpdatedNodes();
Assert.assertEquals(1, updatedNodes.size());
nr = updatedNodes.iterator().next();
Assert.assertEquals(nm4.getNodeId(), nr.getNodeId());
Assert.assertEquals(NodeState.UNHEALTHY, nr.getNodeState());
syncNodeLost(nm3);
// subsequent allocate request returns delta
allocateRequest1 = BuilderUtils.newAllocateRequest(attempt1
.getAppAttemptId(), response1.getResponseId(), 0F, null, null);
response1 = amService.allocate(allocateRequest1).getAMResponse();
updatedNodes = response1.getUpdatedNodes();
Assert.assertEquals(1, updatedNodes.size());
nr = updatedNodes.iterator().next();
Assert.assertEquals(nm3.getNodeId(), nr.getNodeId());
Assert.assertEquals(NodeState.LOST, nr.getNodeState());
// registering another AM gives it the complete failed list
RMApp app2 = rm.submitApp(2000);
// Trigger nm2 heartbeat so that AM gets launched on it
nm2.nodeHeartbeat(true);
RMAppAttempt attempt2 = app2.getCurrentAppAttempt();
MockAM am2 = rm.sendAMLaunched(attempt2.getAppAttemptId());
// register AM returns all unusable nodes
am2.registerAppAttempt();
// allocate request returns no updated node
AllocateRequest allocateRequest2 = BuilderUtils.newAllocateRequest(attempt2
.getAppAttemptId(), 0, 0F, null, null);
AMResponse response2 = amService.allocate(allocateRequest2).getAMResponse();
updatedNodes = response2.getUpdatedNodes();
Assert.assertEquals(0, updatedNodes.size());
syncNodeHeartbeat(nm4, true);
// both AM's should get delta updated nodes
allocateRequest1 = BuilderUtils.newAllocateRequest(attempt1
.getAppAttemptId(), response1.getResponseId(), 0F, null, null);
response1 = amService.allocate(allocateRequest1).getAMResponse();
updatedNodes = response1.getUpdatedNodes();
Assert.assertEquals(1, updatedNodes.size());
nr = updatedNodes.iterator().next();
Assert.assertEquals(nm4.getNodeId(), nr.getNodeId());
Assert.assertEquals(NodeState.RUNNING, nr.getNodeState());
allocateRequest2 = BuilderUtils.newAllocateRequest(attempt2
.getAppAttemptId(), response2.getResponseId(), 0F, null, null);
response2 = amService.allocate(allocateRequest2).getAMResponse();
updatedNodes = response2.getUpdatedNodes();
Assert.assertEquals(1, updatedNodes.size());
nr = updatedNodes.iterator().next();
Assert.assertEquals(nm4.getNodeId(), nr.getNodeId());
Assert.assertEquals(NodeState.RUNNING, nr.getNodeState());
// subsequent allocate calls should return no updated nodes
allocateRequest2 = BuilderUtils.newAllocateRequest(attempt2
.getAppAttemptId(), response2.getResponseId(), 0F, null, null);
response2 = amService.allocate(allocateRequest2).getAMResponse();
updatedNodes = response2.getUpdatedNodes();
Assert.assertEquals(0, updatedNodes.size());
// how to do the above for LOST node
}
}