| /** |
| * 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.mapreduce.task.reduce; |
| |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapreduce.MRJobConfig; |
| import org.apache.hadoop.mapreduce.TaskAttemptID; |
| import org.apache.hadoop.metrics.MetricsContext; |
| import org.apache.hadoop.metrics.MetricsRecord; |
| import org.apache.hadoop.metrics.MetricsUtil; |
| import org.apache.hadoop.metrics.Updater; |
| |
| class ShuffleClientMetrics implements Updater { |
| |
| private MetricsRecord shuffleMetrics = null; |
| private int numFailedFetches = 0; |
| private int numSuccessFetches = 0; |
| private long numBytes = 0; |
| private int numThreadsBusy = 0; |
| private final int numCopiers; |
| |
| ShuffleClientMetrics(TaskAttemptID reduceId, JobConf jobConf) { |
| this.numCopiers = jobConf.getInt(MRJobConfig.SHUFFLE_PARALLEL_COPIES, 5); |
| |
| MetricsContext metricsContext = MetricsUtil.getContext("mapred"); |
| this.shuffleMetrics = |
| MetricsUtil.createRecord(metricsContext, "shuffleInput"); |
| this.shuffleMetrics.setTag("user", jobConf.getUser()); |
| this.shuffleMetrics.setTag("jobName", jobConf.getJobName()); |
| this.shuffleMetrics.setTag("jobId", reduceId.getJobID().toString()); |
| this.shuffleMetrics.setTag("taskId", reduceId.toString()); |
| this.shuffleMetrics.setTag("sessionId", jobConf.getSessionId()); |
| metricsContext.registerUpdater(this); |
| } |
| public synchronized void inputBytes(long numBytes) { |
| this.numBytes += numBytes; |
| } |
| public synchronized void failedFetch() { |
| ++numFailedFetches; |
| } |
| public synchronized void successFetch() { |
| ++numSuccessFetches; |
| } |
| public synchronized void threadBusy() { |
| ++numThreadsBusy; |
| } |
| public synchronized void threadFree() { |
| --numThreadsBusy; |
| } |
| public void doUpdates(MetricsContext unused) { |
| synchronized (this) { |
| shuffleMetrics.incrMetric("shuffle_input_bytes", numBytes); |
| shuffleMetrics.incrMetric("shuffle_failed_fetches", |
| numFailedFetches); |
| shuffleMetrics.incrMetric("shuffle_success_fetches", |
| numSuccessFetches); |
| if (numCopiers != 0) { |
| shuffleMetrics.setMetric("shuffle_fetchers_busy_percent", |
| 100*((float)numThreadsBusy/numCopiers)); |
| } else { |
| shuffleMetrics.setMetric("shuffle_fetchers_busy_percent", 0); |
| } |
| numBytes = 0; |
| numSuccessFetches = 0; |
| numFailedFetches = 0; |
| } |
| shuffleMetrics.update(); |
| } |
| } |