| /* |
| * 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.pig.tools.pigstats.mapreduce; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.mapred.Counters; |
| import org.apache.hadoop.mapred.JobClient; |
| import org.apache.hadoop.mapred.RunningJob; |
| import org.apache.hadoop.mapred.jobcontrol.Job; |
| import org.apache.hadoop.mapred.jobcontrol.JobControl; |
| import org.apache.hadoop.mapreduce.JobID; |
| import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler; |
| import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceOper; |
| import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.NativeMapReduceOper; |
| import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans.MROperPlan; |
| import org.apache.pig.classification.InterfaceAudience.Private; |
| import org.apache.pig.impl.PigContext; |
| import org.apache.pig.tools.pigstats.JobStats; |
| import org.apache.pig.tools.pigstats.PigStats; |
| import org.apache.pig.tools.pigstats.PigStats.JobGraph; |
| import org.apache.pig.tools.pigstats.PigStatsUtil; |
| |
| |
| |
| /** |
| * A utility class for Pig Statistics |
| */ |
| public class MRPigStatsUtil extends PigStatsUtil { |
| |
| public static final String TASK_COUNTER_GROUP |
| = "org.apache.hadoop.mapred.Task$Counter"; |
| public static final String FS_COUNTER_GROUP |
| = "org.apache.hadoop.mapreduce.FileSystemCounter"; |
| |
| private static final Log LOG = LogFactory.getLog(MRPigStatsUtil.class); |
| |
| /** |
| * Returns the count for the given counter name in the counter group |
| * 'MultiStoreCounters' |
| * |
| * @param job the MR job |
| * @param jobClient the Hadoop job client |
| * @param counterName the counter name |
| * @return the count of the given counter name |
| */ |
| public static long getMultiStoreCount(Job job, JobClient jobClient, |
| String counterName) { |
| long value = -1; |
| try { |
| RunningJob rj = jobClient.getJob(job.getAssignedJobID()); |
| if (rj != null) { |
| Counters.Counter counter = rj.getCounters().getGroup( |
| MULTI_STORE_COUNTER_GROUP).getCounterForName(counterName); |
| value = counter.getValue(); |
| } |
| } catch (IOException e) { |
| LOG.warn("Failed to get the counter for " + counterName, e); |
| } |
| return value; |
| } |
| |
| /** |
| * Starts collecting statistics for the given MR plan |
| * |
| * @param pc the Pig context |
| * @param client the Hadoop job client |
| * @param jcc the job compiler |
| * @param plan the MR plan |
| */ |
| public static void startCollection(PigContext pc, JobClient client, |
| JobControlCompiler jcc, MROperPlan plan) { |
| SimplePigStats ps = (SimplePigStats)PigStats.get(); |
| ps.initialize(pc, client, jcc, plan); |
| |
| MRScriptState.get().emitInitialPlanNotification(plan); |
| MRScriptState.get().emitLaunchStartedNotification(plan.size()); |
| } |
| |
| /** |
| * Stops collecting statistics for a MR plan |
| * |
| * @param display if true, log collected statistics in the Pig log |
| * file at INFO level |
| */ |
| public static void stopCollection(boolean display) { |
| SimplePigStats ps = (SimplePigStats)PigStats.get(); |
| ps.finish(); |
| if (!ps.isSuccessful()) { |
| LOG.error(ps.getNumberFailedJobs() + " map reduce job(s) failed!"); |
| String errMsg = ps.getErrorMessage(); |
| if (errMsg != null) { |
| LOG.error("Error message: " + errMsg); |
| } |
| } |
| MRScriptState.get().emitLaunchCompletedNotification( |
| ps.getNumberSuccessfulJobs()); |
| if (display) ps.display(); |
| } |
| |
| /** |
| * Add stats for a new Job, which doesn't yet need to be completed. |
| * |
| * @param job the job being run |
| * @return JobStats for the job |
| */ |
| public static JobStats addJobStats(Job job) { |
| SimplePigStats ps = (SimplePigStats)PigStats.get(); |
| return ps.addMRJobStats(job); |
| } |
| |
| /** |
| * Logs the statistics in the Pig log file at INFO level |
| */ |
| public static void displayStatistics() { |
| ((SimplePigStats)PigStats.get()).display(); |
| } |
| |
| /** |
| * Updates the {@link JobGraph} of the {@link PigStats}. The initial |
| * {@link JobGraph} is created without job ids using {@link MROperPlan}, |
| * before any job is submitted for execution. The {@link JobGraph} then |
| * is updated with job ids after jobs are executed. |
| * |
| * @param jobMroMap the map that maps {@link Job}s to {@link MapReduceOper}s |
| */ |
| public static void updateJobMroMap(Map<Job, MapReduceOper> jobMroMap) { |
| SimplePigStats ps = (SimplePigStats)PigStats.get(); |
| for (Map.Entry<Job, MapReduceOper> entry : jobMroMap.entrySet()) { |
| MapReduceOper mro = entry.getValue(); |
| ps.mapMROperToJob(mro, entry.getKey()); |
| } |
| } |
| |
| /** |
| * Updates the statistics after a patch of jobs is done |
| * |
| * @param jc the job control |
| */ |
| public static void accumulateStats(JobControl jc) { |
| SimplePigStats ps = (SimplePigStats)PigStats.get(); |
| MRScriptState ss = MRScriptState.get(); |
| |
| for (Job job : jc.getSuccessfulJobs()) { |
| MRJobStats js = addSuccessJobStats(ps, job); |
| if (js != null) { |
| ss.emitjobFinishedNotification(js); |
| } |
| } |
| |
| for (Job job : jc.getFailedJobs()) { |
| MRJobStats js = addFailedJobStats(ps, job); |
| if (js != null) { |
| js.setErrorMsg(job.getMessage()); |
| ss.emitJobFailedNotification(js); |
| } |
| } |
| } |
| |
| @Private |
| public static void setBackendException(Job job, Exception e) { |
| JobID jobId = job.getAssignedJobID(); |
| if (jobId == null) { |
| return; |
| } |
| PigStats.get().setBackendException(jobId.toString(), e); |
| } |
| |
| private static MRJobStats addFailedJobStats(SimplePigStats ps, Job job) { |
| if (ps.isJobSeen(job)) return null; |
| |
| MRJobStats js = ps.addMRJobStats(job); |
| if (js == null) { |
| LOG.warn("unable to add failed job stats"); |
| } else { |
| js.setSuccessful(false); |
| js.addOutputStatistics(); |
| js.addInputStatistics(); |
| } |
| return js; |
| } |
| |
| public static MRJobStats addNativeJobStats(PigStats ps, NativeMapReduceOper mr, |
| boolean success) { |
| return addNativeJobStats(ps, mr, success, null); |
| } |
| |
| public static MRJobStats addNativeJobStats(PigStats ps, NativeMapReduceOper mr, |
| boolean success, Exception e) { |
| if (ps.isEmbedded()) { |
| throw new IllegalArgumentException(); |
| } |
| MRJobStats js = ((SimplePigStats)ps).addMRJobStatsForNative(mr); |
| if(js == null) { |
| LOG.warn("unable to add native job stats"); |
| } else { |
| js.setSuccessful(success); |
| if(e != null) |
| js.setBackendException(e); |
| } |
| return js; |
| } |
| |
| private static MRJobStats addSuccessJobStats(SimplePigStats ps, Job job) { |
| if (ps.isJobSeen(job)) return null; |
| |
| MRJobStats js = ps.addMRJobStats(job); |
| if (js == null) { |
| LOG.warn("unable to add job stats"); |
| } else { |
| js.setSuccessful(true); |
| |
| js.addMapReduceStatistics(job); |
| |
| js.addCounters(job); |
| |
| js.addOutputStatistics(); |
| |
| js.addInputStatistics(); |
| } |
| return js; |
| } |
| |
| } |