| /** |
| * 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.hadoop.mapred; |
| |
| import org.apache.hadoop.metrics.MetricsContext; |
| import org.apache.hadoop.metrics.MetricsRecord; |
| import org.apache.hadoop.metrics.MetricsUtil; |
| import org.apache.hadoop.metrics.Updater; |
| import org.apache.hadoop.metrics.jvm.JvmMetrics; |
| |
| @SuppressWarnings("deprecation") |
| class LocalJobRunnerMetrics implements Updater { |
| private final MetricsRecord metricsRecord; |
| |
| private int numMapTasksLaunched = 0; |
| private int numMapTasksCompleted = 0; |
| private int numReduceTasksLaunched = 0; |
| private int numReduceTasksCompleted = 0; |
| private int numWaitingMaps = 0; |
| private int numWaitingReduces = 0; |
| |
| public LocalJobRunnerMetrics(JobConf conf) { |
| String sessionId = conf.getSessionId(); |
| // Initiate JVM Metrics |
| JvmMetrics.init("JobTracker", sessionId); |
| // Create a record for map-reduce metrics |
| MetricsContext context = MetricsUtil.getContext("mapred"); |
| // record name is jobtracker for compatibility |
| metricsRecord = MetricsUtil.createRecord(context, "jobtracker"); |
| metricsRecord.setTag("sessionId", sessionId); |
| context.registerUpdater(this); |
| } |
| |
| /** |
| * Since this object is a registered updater, this method will be called |
| * periodically, e.g. every 5 seconds. |
| */ |
| public void doUpdates(MetricsContext unused) { |
| synchronized (this) { |
| metricsRecord.incrMetric("maps_launched", numMapTasksLaunched); |
| metricsRecord.incrMetric("maps_completed", numMapTasksCompleted); |
| metricsRecord.incrMetric("reduces_launched", numReduceTasksLaunched); |
| metricsRecord.incrMetric("reduces_completed", numReduceTasksCompleted); |
| metricsRecord.incrMetric("waiting_maps", numWaitingMaps); |
| metricsRecord.incrMetric("waiting_reduces", numWaitingReduces); |
| |
| numMapTasksLaunched = 0; |
| numMapTasksCompleted = 0; |
| numReduceTasksLaunched = 0; |
| numReduceTasksCompleted = 0; |
| numWaitingMaps = 0; |
| numWaitingReduces = 0; |
| } |
| metricsRecord.update(); |
| } |
| |
| public synchronized void launchMap(TaskAttemptID taskAttemptID) { |
| ++numMapTasksLaunched; |
| decWaitingMaps(taskAttemptID.getJobID(), 1); |
| } |
| |
| public synchronized void completeMap(TaskAttemptID taskAttemptID) { |
| ++numMapTasksCompleted; |
| } |
| |
| public synchronized void launchReduce(TaskAttemptID taskAttemptID) { |
| ++numReduceTasksLaunched; |
| decWaitingReduces(taskAttemptID.getJobID(), 1); |
| } |
| |
| public synchronized void completeReduce(TaskAttemptID taskAttemptID) { |
| ++numReduceTasksCompleted; |
| } |
| |
| private synchronized void decWaitingMaps(JobID id, int task) { |
| numWaitingMaps -= task; |
| } |
| |
| private synchronized void decWaitingReduces(JobID id, int task){ |
| numWaitingReduces -= task; |
| } |
| |
| } |