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* this work for additional information regarding copyright
* ownership. Elasticsearch 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
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package org.elasticsearch.hadoop.yarn.client;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.yarn.api.ApplicationConstants;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
import org.apache.hadoop.yarn.api.records.LocalResource;
import org.apache.hadoop.yarn.api.records.LocalResourceType;
import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
import org.apache.hadoop.yarn.api.records.Priority;
import org.apache.hadoop.yarn.client.api.YarnClientApplication;
import org.apache.hadoop.yarn.util.ConverterUtils;
import org.apache.hadoop.yarn.util.Records;
import org.elasticsearch.hadoop.yarn.EsYarnConstants;
import org.elasticsearch.hadoop.yarn.am.ApplicationMaster;
import org.elasticsearch.hadoop.yarn.cfg.Config;
import org.elasticsearch.hadoop.yarn.compat.YarnCompat;
import org.elasticsearch.hadoop.yarn.util.PropertiesUtils;
import org.elasticsearch.hadoop.yarn.util.StringUtils;
import org.elasticsearch.hadoop.yarn.util.YarnUtils;
public class YarnLauncher {
private static final Log log = LogFactory.getLog(YarnLauncher.class);
private final ClientRpc client;
private Config clientCfg;
public YarnLauncher(ClientRpc client, Config cfg) {
this.client = client;
this.clientCfg = cfg;
}
public ApplicationId run() {
client.start();
YarnClientApplication app = client.newApp();
ApplicationSubmissionContext am = setupAM(app);
ApplicationId appId = client.submitApp(am);
return am.getApplicationId();
}
private ApplicationSubmissionContext setupAM(YarnClientApplication clientApp) {
ApplicationSubmissionContext appContext = clientApp.getApplicationSubmissionContext();
// already happens inside Hadoop but to be consistent
appContext.setApplicationId(clientApp.getNewApplicationResponse().getApplicationId());
appContext.setApplicationName(clientCfg.appName());
appContext.setAMContainerSpec(createContainerContext());
appContext.setResource(YarnCompat.resource(client.getConfiguration(), clientCfg.amMem(), clientCfg.amVCores()));
appContext.setPriority(Priority.newInstance(clientCfg.amPriority()));
appContext.setQueue(clientCfg.amQueue());
appContext.setApplicationType(clientCfg.appType());
YarnCompat.setApplicationTags(appContext, clientCfg.appTags());
return appContext;
}
private ContainerLaunchContext createContainerContext() {
ContainerLaunchContext amContainer = Records.newRecord(ContainerLaunchContext.class);
amContainer.setLocalResources(setupEsYarnJar());
amContainer.setEnvironment(setupEnv());
amContainer.setCommands(setupCmd());
return amContainer;
}
private Map<String, LocalResource> setupEsYarnJar() {
Map<String, LocalResource> resources = new LinkedHashMap<String, LocalResource>();
LocalResource esYarnJar = Records.newRecord(LocalResource.class);
Path p = new Path(clientCfg.jarHdfsPath());
FileStatus fsStat;
try {
fsStat = FileSystem.get(client.getConfiguration()).getFileStatus(p);
} catch (IOException ex) {
throw new IllegalArgumentException(
String.format("Cannot find jar [%s]; make sure the artifacts have been properly provisioned and the correct permissions are in place.", clientCfg.jarHdfsPath()), ex);
}
// use the normalized path as otherwise YARN chokes down the line
esYarnJar.setResource(ConverterUtils.getYarnUrlFromPath(fsStat.getPath()));
esYarnJar.setSize(fsStat.getLen());
esYarnJar.setTimestamp(fsStat.getModificationTime());
esYarnJar.setType(LocalResourceType.FILE);
esYarnJar.setVisibility(LocalResourceVisibility.PUBLIC);
resources.put(clientCfg.jarName(), esYarnJar);
return resources;
}
private Map<String, String> setupEnv() {
Configuration cfg = client.getConfiguration();
Map<String, String> env = YarnUtils.setupEnv(cfg);
YarnUtils.addToEnv(env, EsYarnConstants.CFG_PROPS, PropertiesUtils.propsToBase64(clientCfg.asProperties()));
YarnUtils.addToEnv(env, clientCfg.envVars());
return env;
}
private List<String> setupCmd() {
List<String> cmds = new ArrayList<String>();
// don't use -jar since it overrides the classpath
cmds.add(YarnCompat.$$(ApplicationConstants.Environment.JAVA_HOME) + "/bin/java");
cmds.add(ApplicationMaster.class.getName());
cmds.add("1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/" + ApplicationConstants.STDOUT);
cmds.add("2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/" + ApplicationConstants.STDERR);
return Collections.singletonList(StringUtils.concatenate(cmds, " "));
}
}