/**
* 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.oozie.action.hadoop;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.ApplicationClientProtocol;
import org.apache.hadoop.yarn.api.protocolrecords.ApplicationsRequestScope;
import org.apache.hadoop.yarn.api.protocolrecords.GetApplicationsRequest;
import org.apache.hadoop.yarn.api.protocolrecords.GetApplicationsResponse;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.client.ClientRMProxy;
import org.apache.hadoop.yarn.client.api.YarnClient;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.mapreduce.TypeConverter;
public class LauncherMainHadoopUtils {
private LauncherMainHadoopUtils() {
}
private static Set<ApplicationId> getChildYarnJobs(Configuration actionConf) {
Set<ApplicationId> childYarnJobs = new HashSet<ApplicationId>();
long startTime = 0L;
try {
startTime = Long.parseLong((System.getProperty("oozie.job.launch.time")));
} catch(NumberFormatException nfe) {
throw new RuntimeException("Could not find Oozie job launch time", nfe);
}
String tag = actionConf.get("mapreduce.job.tags");
if (tag == null) {
throw new RuntimeException("Could not find Yarn tags property (mapreduce.job.tags)");
}
GetApplicationsRequest gar = GetApplicationsRequest.newInstance();
gar.setScope(ApplicationsRequestScope.OWN);
gar.setStartRange(startTime, System.currentTimeMillis());
gar.setApplicationTags(Collections.singleton(tag));
try {
ApplicationClientProtocol proxy = ClientRMProxy.createRMProxy(actionConf, ApplicationClientProtocol.class);
GetApplicationsResponse apps = proxy.getApplications(gar);
List<ApplicationReport> appsList = apps.getApplicationList();
for(ApplicationReport appReport : appsList) {
childYarnJobs.add(appReport.getApplicationId());
}
} catch (IOException ioe) {
throw new RuntimeException("Exception occurred while finding child jobs", ioe);
} catch (YarnException ye) {
throw new RuntimeException("Exception occurred while finding child jobs", ye);
}
return childYarnJobs;
}
public static String getYarnJobForMapReduceAction(Configuration actionConf) {
Set<ApplicationId> childYarnJobs = getChildYarnJobs(actionConf);
String childJobId = null;
if (!childYarnJobs.isEmpty()) {
ApplicationId childJobYarnId = childYarnJobs.iterator().next();
System.out.println("Found Map-Reduce job [" + childJobYarnId + "] already running");
// Need the JobID version for Oozie
childJobId = TypeConverter.fromYarn(childJobYarnId).toString();
}
return childJobId;
}
public static void killChildYarnJobs(Configuration actionConf) {
try {
Set<ApplicationId> childYarnJobs = getChildYarnJobs(actionConf);
if (!childYarnJobs.isEmpty()) {
System.out.println();
System.out.println("Found [" + childYarnJobs.size() + "] Map-Reduce jobs from this launcher");
System.out.println("Killing existing jobs and starting over:");
YarnClient yarnClient = YarnClient.createYarnClient();
yarnClient.init(actionConf);
yarnClient.start();
for (ApplicationId app : childYarnJobs) {
System.out.print("Killing job [" + app + "] ... ");
yarnClient.killApplication(app);
System.out.println("Done");
}
System.out.println();
}
} catch (YarnException ye) {
throw new RuntimeException("Exception occurred while killing child job(s)", ye);
} catch (IOException ioe) {
throw new RuntimeException("Exception occurred while killing child job(s)", ioe);
}
}
}