/**
* 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.applications.distributedshell;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.yarn.api.records.Container;
import org.apache.hadoop.yarn.api.records.ContainerExitStatus;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.ContainerState;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
import org.apache.hadoop.yarn.api.records.NodeId;
import org.apache.hadoop.yarn.api.records.Priority;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.client.api.AMRMClient;
import org.apache.hadoop.yarn.client.api.async.AMRMClientAsync;
import org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.server.utils.BuilderUtils;
import org.junit.Assert;
import org.junit.Test;
import org.mockito.Matchers;
import org.mockito.Mockito;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* A bunch of tests to make sure that the container allocations
* and releases occur correctly.
*/
public class TestDSAppMaster {
static class TestAppMaster extends ApplicationMaster {
private int threadsLaunched = 0;
public List<String> yarnShellIds = new ArrayList<String>();
@Override
protected Thread createLaunchContainerThread(Container allocatedContainer,
String shellId) {
threadsLaunched++;
launchedContainers.add(allocatedContainer.getId());
yarnShellIds.add(shellId);
return new Thread();
}
void setNumTotalContainers(int numTotalContainers) {
this.numTotalContainers = numTotalContainers;
}
int getAllocatedContainers() {
return this.numAllocatedContainers.get();
}
@Override
void startTimelineClient(final Configuration conf) throws YarnException,
IOException, InterruptedException {
timelineClient = null;
}
}
@SuppressWarnings("unchecked")
@Test
public void testDSAppMasterAllocateHandler() throws Exception {
TestAppMaster master = new TestAppMaster();
int targetContainers = 2;
AMRMClientAsync mockClient = Mockito.mock(AMRMClientAsync.class);
master.setAmRMClient(mockClient);
master.setNumTotalContainers(targetContainers);
Mockito.doNothing().when(mockClient)
.addContainerRequest(Matchers.any(AMRMClient.ContainerRequest.class));
ApplicationMaster.RMCallbackHandler handler = master.getRMCallbackHandler();
List<Container> containers = new ArrayList<>(1);
ContainerId id1 = BuilderUtils.newContainerId(1, 1, 1, 1);
containers.add(generateContainer(id1));
master.numRequestedContainers.set(targetContainers);
// first allocate a single container, everything should be fine
handler.onContainersAllocated(containers);
Assert.assertEquals("Wrong container allocation count", 1,
master.getAllocatedContainers());
Mockito.verifyZeroInteractions(mockClient);
Assert.assertEquals("Incorrect number of threads launched", 1,
master.threadsLaunched);
Assert.assertEquals("Incorrect YARN Shell IDs",
Arrays.asList("1"), master.yarnShellIds);
// now send 3 extra containers
containers.clear();
ContainerId id2 = BuilderUtils.newContainerId(1, 1, 1, 2);
containers.add(generateContainer(id2));
ContainerId id3 = BuilderUtils.newContainerId(1, 1, 1, 3);
containers.add(generateContainer(id3));
ContainerId id4 = BuilderUtils.newContainerId(1, 1, 1, 4);
containers.add(generateContainer(id4));
handler.onContainersAllocated(containers);
Assert.assertEquals("Wrong final container allocation count", 4,
master.getAllocatedContainers());
Assert.assertEquals("Incorrect number of threads launched", 4,
master.threadsLaunched);
Assert.assertEquals("Incorrect YARN Shell IDs",
Arrays.asList("1", "2", "3", "4"), master.yarnShellIds);
// make sure we handle completion events correctly
List<ContainerStatus> status = new ArrayList<>();
status.add(generateContainerStatus(id1, ContainerExitStatus.SUCCESS));
status.add(generateContainerStatus(id2, ContainerExitStatus.SUCCESS));
status.add(generateContainerStatus(id3, ContainerExitStatus.ABORTED));
status.add(generateContainerStatus(id4, ContainerExitStatus.ABORTED));
handler.onContainersCompleted(status);
Assert.assertEquals("Unexpected number of completed containers",
targetContainers, master.getNumCompletedContainers());
Assert.assertTrue("Master didn't finish containers as expected",
master.getDone());
// test for events from containers we know nothing about
// these events should be ignored
status = new ArrayList<>();
ContainerId id5 = BuilderUtils.newContainerId(1, 1, 1, 5);
status.add(generateContainerStatus(id5, ContainerExitStatus.ABORTED));
Assert.assertEquals("Unexpected number of completed containers",
targetContainers, master.getNumCompletedContainers());
Assert.assertTrue("Master didn't finish containers as expected",
master.getDone());
status.add(generateContainerStatus(id5, ContainerExitStatus.SUCCESS));
Assert.assertEquals("Unexpected number of completed containers",
targetContainers, master.getNumCompletedContainers());
Assert.assertTrue("Master didn't finish containers as expected",
master.getDone());
}
private Container generateContainer(ContainerId cid) {
return Container.newInstance(cid, NodeId.newInstance("host", 5000),
"host:80", Resource.newInstance(1024, 1), Priority.newInstance(0), null);
}
private ContainerStatus
generateContainerStatus(ContainerId id, int exitStatus) {
return ContainerStatus.newInstance(id, ContainerState.COMPLETE, "",
exitStatus);
}
@Test
public void testTimelineClientInDSAppMaster() throws Exception {
ApplicationMaster appMaster = new ApplicationMaster();
appMaster.appSubmitterUgi =
UserGroupInformation.createUserForTesting("foo", new String[]{"bar"});
Configuration conf = new YarnConfiguration();
conf.setBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED, true);
appMaster.startTimelineClient(conf);
Assert.assertEquals(appMaster.appSubmitterUgi,
((TimelineClientImpl)appMaster.timelineClient).getUgi());
}
}