| /** |
| * 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 |
| * <p/> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p/> |
| * 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.mapred.gridmix; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.mapred.ClusterStatus; |
| import org.apache.hadoop.mapred.JobClient; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.tools.rumen.JobStory; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| @InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| public enum JobCreator { |
| |
| LOADJOB { |
| @Override |
| public GridmixJob createGridmixJob( |
| Configuration gridmixConf, long submissionMillis, JobStory jobdesc, |
| Path outRoot, UserGroupInformation ugi, int seq) throws IOException { |
| |
| // Build configuration for this simulated job |
| Configuration conf = new Configuration(gridmixConf); |
| dce.configureDistCacheFiles(conf, jobdesc.getJobConf()); |
| return new LoadJob(conf, submissionMillis, jobdesc, outRoot, ugi, seq); |
| } |
| |
| @Override |
| public boolean canEmulateDistCacheLoad() { |
| return true; |
| } |
| }, |
| |
| SLEEPJOB { |
| private String[] hosts; |
| |
| @Override |
| public GridmixJob createGridmixJob( |
| Configuration conf, long submissionMillis, JobStory jobdesc, Path outRoot, |
| UserGroupInformation ugi, int seq) throws IOException { |
| int numLocations = conf.getInt(SLEEPJOB_RANDOM_LOCATIONS, 0); |
| if (numLocations < 0) numLocations=0; |
| if ((numLocations > 0) && (hosts == null)) { |
| final JobClient client = new JobClient(new JobConf(conf)); |
| ClusterStatus stat = client.getClusterStatus(true); |
| final int nTrackers = stat.getTaskTrackers(); |
| final ArrayList<String> hostList = new ArrayList<String>(nTrackers); |
| final Pattern trackerPattern = Pattern.compile("tracker_([^:]*):.*"); |
| final Matcher m = trackerPattern.matcher(""); |
| for (String tracker : stat.getActiveTrackerNames()) { |
| m.reset(tracker); |
| if (!m.find()) { |
| continue; |
| } |
| final String name = m.group(1); |
| hostList.add(name); |
| } |
| hosts = hostList.toArray(new String[hostList.size()]); |
| } |
| return new SleepJob(conf, submissionMillis, jobdesc, outRoot, ugi, seq, |
| numLocations, hosts); |
| } |
| |
| @Override |
| public boolean canEmulateDistCacheLoad() { |
| return false; |
| } |
| }; |
| |
| public static final String GRIDMIX_JOB_TYPE = "gridmix.job.type"; |
| public static final String SLEEPJOB_RANDOM_LOCATIONS = |
| "gridmix.sleep.fake-locations"; |
| |
| /** |
| * Create Gridmix simulated job. |
| * @param conf configuration of simulated job |
| * @param submissionMillis At what time submission of this simulated job be |
| * done |
| * @param jobdesc JobStory obtained from trace |
| * @param outRoot gridmix output directory |
| * @param ugi UGI of job submitter of this simulated job |
| * @param seq job sequence number |
| * @return the created simulated job |
| * @throws IOException |
| */ |
| public abstract GridmixJob createGridmixJob( |
| final Configuration conf, long submissionMillis, final JobStory jobdesc, |
| Path outRoot, UserGroupInformation ugi, final int seq) throws IOException; |
| |
| public static JobCreator getPolicy( |
| Configuration conf, JobCreator defaultPolicy) { |
| return conf.getEnum(GRIDMIX_JOB_TYPE, defaultPolicy); |
| } |
| |
| /** |
| * @return true if gridmix simulated jobs of this job type can emulate |
| * distributed cache load |
| */ |
| abstract boolean canEmulateDistCacheLoad(); |
| |
| DistributedCacheEmulator dce; |
| /** |
| * This method is to be called before calling any other method in JobCreator |
| * except canEmulateDistCacheLoad(), especially if canEmulateDistCacheLoad() |
| * returns true for that job type. |
| * @param e Distributed Cache Emulator |
| */ |
| void setDistCacheEmulator(DistributedCacheEmulator e) { |
| this.dce = e; |
| } |
| } |