| /* |
| * 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.twill.internal.yarn; |
| |
| import com.google.common.base.Function; |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| import com.google.common.collect.Lists; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.api.ApplicationConstants; |
| import org.apache.hadoop.yarn.api.protocolrecords.AllocateResponse; |
| import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterResponse; |
| import org.apache.hadoop.yarn.api.records.Container; |
| import org.apache.hadoop.yarn.api.records.ContainerStatus; |
| import org.apache.hadoop.yarn.api.records.FinalApplicationStatus; |
| 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.twill.internal.appmaster.RunnableProcessLauncher; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| import javax.annotation.Nullable; |
| |
| /** |
| * Wrapper class for {@link AMRMClient} for Hadoop version 2.1 or greater. |
| */ |
| public class Hadoop21YarnAMClient extends AbstractYarnAMClient<AMRMClient.ContainerRequest> { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(Hadoop21YarnAMClient.class); |
| |
| protected static final Function<ContainerStatus, YarnContainerStatus> STATUS_TRANSFORM; |
| |
| static { |
| STATUS_TRANSFORM = new Function<ContainerStatus, YarnContainerStatus>() { |
| @Override |
| public YarnContainerStatus apply(ContainerStatus status) { |
| return new Hadoop21YarnContainerStatus(status); |
| } |
| }; |
| } |
| |
| protected final AMRMClient<AMRMClient.ContainerRequest> amrmClient; |
| protected final Hadoop21YarnNMClient nmClient; |
| protected Resource maxCapability; |
| |
| public Hadoop21YarnAMClient(Configuration conf) { |
| super(ApplicationConstants.Environment.CONTAINER_ID.name()); |
| |
| this.amrmClient = AMRMClient.createAMRMClient(); |
| this.amrmClient.init(conf); |
| this.nmClient = new Hadoop21YarnNMClient(conf); |
| } |
| |
| @Override |
| protected void startUp() throws Exception { |
| Preconditions.checkNotNull(trackerAddr, "Tracker address not set."); |
| Preconditions.checkNotNull(trackerUrl, "Tracker URL not set."); |
| |
| amrmClient.start(); |
| RegisterApplicationMasterResponse response = amrmClient.registerApplicationMaster(trackerAddr.getHostName(), |
| trackerAddr.getPort(), |
| trackerUrl.toString()); |
| maxCapability = response.getMaximumResourceCapability(); |
| nmClient.startAndWait(); |
| } |
| |
| @Override |
| protected void shutDown() throws Exception { |
| nmClient.stopAndWait(); |
| amrmClient.unregisterApplicationMaster(FinalApplicationStatus.SUCCEEDED, null, trackerUrl.toString()); |
| amrmClient.stop(); |
| } |
| |
| @Override |
| public String getHost() { |
| return System.getenv().get(ApplicationConstants.Environment.NM_HOST.name()); |
| } |
| |
| @Override |
| public int getNMPort() { |
| return Integer.parseInt(System.getenv().get(ApplicationConstants.Environment.NM_PORT.name())); |
| } |
| |
| @Override |
| protected AMRMClient.ContainerRequest createContainerRequest(Priority priority, Resource capability, |
| @Nullable String[] hosts, @Nullable String[] racks, |
| boolean relaxLocality) { |
| return new AMRMClient.ContainerRequest(capability, hosts, racks, priority, relaxLocality); |
| } |
| |
| @Override |
| protected void addContainerRequest(AMRMClient.ContainerRequest request) { |
| amrmClient.addContainerRequest(request); |
| } |
| |
| @Override |
| protected void removeContainerRequest(AMRMClient.ContainerRequest request) { |
| amrmClient.removeContainerRequest(request); |
| } |
| |
| @Override |
| protected void updateBlacklist(List<String> blacklistAdditions, List<String> blacklistRemovals) { |
| // An empty implementation since Blacklist is not supported in Hadoop-2.1 AMRMClient. |
| if (recordUnsupportedFeature("blacklist")) { |
| LOG.warn("Blacklist is not supported in Hadoop 2.1 AMRMClient"); |
| } |
| } |
| |
| @Override |
| protected AllocateResult doAllocate(float progress) throws Exception { |
| AllocateResponse allocateResponse = amrmClient.allocate(progress); |
| List<RunnableProcessLauncher> launchers |
| = Lists.newArrayListWithCapacity(allocateResponse.getAllocatedContainers().size()); |
| |
| for (Container container : allocateResponse.getAllocatedContainers()) { |
| launchers.add(new RunnableProcessLauncher(new Hadoop21YarnContainerInfo(container), nmClient)); |
| } |
| |
| List<YarnContainerStatus> completed = ImmutableList.copyOf( |
| Iterables.transform(allocateResponse.getCompletedContainersStatuses(), STATUS_TRANSFORM)); |
| |
| return new AllocateResult(launchers, completed); |
| } |
| |
| @Override |
| protected void releaseAssignedContainer(YarnContainerInfo containerInfo) { |
| Container container = containerInfo.getContainer(); |
| amrmClient.releaseAssignedContainer(container.getId()); |
| } |
| |
| @Override |
| protected Resource adjustCapability(Resource resource) { |
| int cores = resource.getVirtualCores(); |
| int updatedCores = Math.min(resource.getVirtualCores(), maxCapability.getVirtualCores()); |
| |
| if (cores != updatedCores) { |
| resource.setVirtualCores(updatedCores); |
| LOG.info("Adjust virtual cores requirement from {} to {}.", cores, updatedCores); |
| } |
| |
| int updatedMemory = Math.min(resource.getMemory(), maxCapability.getMemory()); |
| if (resource.getMemory() != updatedMemory) { |
| resource.setMemory(updatedMemory); |
| LOG.info("Adjust memory requirement from {} to {} MB.", resource.getMemory(), updatedMemory); |
| } |
| |
| return resource; |
| } |
| } |