hadoop ClusterSummarizer 源码

  • 2022-10-20
  • 浏览 (20)

haddop ClusterSummarizer 代码

文件路径:/hadoop-tools/hadoop-gridmix/src/main/java/org/apache/hadoop/mapred/gridmix/ClusterSummarizer.java

/**
 * 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.gridmix;

import org.apache.commons.lang3.time.FastDateFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.mapred.gridmix.Statistics.ClusterStats;
import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig;

/**
 * Summarizes the Hadoop cluster used in this {@link Gridmix} run. 
 * Statistics that are reported are
 * <ul>
 *   <li>Total number of active trackers in the cluster</li>
 *   <li>Total number of blacklisted trackers in the cluster</li>
 *   <li>Max map task capacity of the cluster</li>
 *   <li>Max reduce task capacity of the cluster</li>
 * </ul>
 * 
 * Apart from these statistics, {@link JobTracker} and {@link FileSystem} 
 * addresses are also recorded in the summary.
 */
class ClusterSummarizer implements StatListener<ClusterStats> {
  static final Logger LOG = LoggerFactory.getLogger(ClusterSummarizer.class);
  
  private int numBlacklistedTrackers;
  private int numActiveTrackers;
  private int maxMapTasks;
  private int maxReduceTasks;
  private String jobTrackerInfo = Summarizer.NA;
  private String namenodeInfo = Summarizer.NA;
  
  @Override
  @SuppressWarnings("deprecation")
  public void update(ClusterStats item) {
    try {
      numBlacklistedTrackers = item.getStatus().getBlacklistedTrackers();
      numActiveTrackers = item.getStatus().getTaskTrackers();
      maxMapTasks = item.getStatus().getMaxMapTasks();
      maxReduceTasks = item.getStatus().getMaxReduceTasks();
    } catch (Exception e) {
      long time = System.currentTimeMillis();
      LOG.info("Error in processing cluster status at " 
               + FastDateFormat.getInstance().format(time));
    }
  }
  
  /**
   * Summarizes the cluster used for this {@link Gridmix} run.
   */
  @Override
  public String toString() {
    StringBuilder builder = new StringBuilder();
    builder.append("Cluster Summary:-");
    builder.append("\nJobTracker: ").append(getJobTrackerInfo());
    builder.append("\nFileSystem: ").append(getNamenodeInfo());
    builder.append("\nNumber of blacklisted trackers: ")
           .append(getNumBlacklistedTrackers());
    builder.append("\nNumber of active trackers: ")
           .append(getNumActiveTrackers());
    builder.append("\nMax map task capacity: ")
           .append(getMaxMapTasks());
    builder.append("\nMax reduce task capacity: ").append(getMaxReduceTasks());
    builder.append("\n\n");
    return builder.toString();
  }
  
  void start(Configuration conf) {
    jobTrackerInfo = conf.get(JTConfig.JT_IPC_ADDRESS);
    namenodeInfo = conf.getTrimmed(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY);
  }
  
  // Getters
  protected int getNumBlacklistedTrackers() {
    return numBlacklistedTrackers;
  }
  
  protected int getNumActiveTrackers() {
    return numActiveTrackers;
  }
  
  protected int getMaxMapTasks() {
    return maxMapTasks;
  }
  
  protected int getMaxReduceTasks() {
    return maxReduceTasks;
  }
  
  protected String getJobTrackerInfo() {
    return jobTrackerInfo;
  }
  
  protected String getNamenodeInfo() {
    return namenodeInfo;
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AvgRecordFactory 源码

hadoop CompressionEmulationUtil 源码

hadoop DistributedCacheEmulator 源码

hadoop EchoUserResolver 源码

hadoop ExecutionSummarizer 源码

hadoop FilePool 源码

hadoop FileQueue 源码

hadoop GenerateData 源码

hadoop GenerateDistCacheData 源码

hadoop Gridmix 源码

0  赞