hadoop JSONHistoryViewerPrinter 源码

  • 2022-10-20
  • 浏览 (134)

haddop JSONHistoryViewerPrinter 代码

文件路径:/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/JSONHistoryViewerPrinter.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.mapreduce.jobhistory;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.mapred.TaskStatus;
import org.apache.hadoop.mapreduce.Counter;
import org.apache.hadoop.mapreduce.CounterGroup;
import org.apache.hadoop.mapreduce.Counters;
import org.apache.hadoop.mapreduce.TaskID;
import org.apache.hadoop.mapreduce.TaskType;
import org.codehaus.jettison.json.JSONArray;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.io.Writer;
import java.util.Iterator;
import java.util.Map;

/**
 * Used by the {@link HistoryViewer} to print job history in a machine-readable
 * JSON format.
 */
@InterfaceAudience.Private
@InterfaceStability.Unstable
class JSONHistoryViewerPrinter implements HistoryViewerPrinter {

  private JobHistoryParser.JobInfo job;
  private boolean printAll;
  private String scheme;
  private JSONObject json;

  JSONHistoryViewerPrinter(JobHistoryParser.JobInfo job, boolean printAll,
                           String scheme) {
    this.job = job;
    this.printAll = printAll;
    this.scheme = scheme;
  }

  /**
   * Print out the Job History to the given {@link PrintStream} in a
   * machine-readable JSON format.
   * @param ps the {@link PrintStream} to print to
   * @throws IOException when a problem occurs while printing
   */
  @Override
  public void print(PrintStream ps) throws IOException {
    json = new JSONObject();

    Writer writer = null;
    try {
      printJobDetails();
      printTaskSummary();
      printTasks();

      writer = new OutputStreamWriter(ps, "UTF-8");
      json.write(writer);
      writer.flush();
    } catch (JSONException je) {
      throw new IOException("Failure parsing JSON document: " + je.getMessage(),
          je);
    } finally {
      if (writer != null) {
        writer.close();
      }
    }
  }

  private void printJobDetails() throws JSONException {
    json.put("hadoopJob", job.getJobId().toString());
    json.put("user", job.getUsername());
    json.put("jobName", job.getJobname());
    json.put("jobConf", job.getJobConfPath());
    json.put("submittedAt", job.getSubmitTime());
    json.put("launchedAt", job.getLaunchTime());
    json.put("finishedAt", job.getFinishTime());
    json.put("status", ((job.getJobStatus() == null) ?
        "Incomplete" :job.getJobStatus()));
    printJobCounters(job.getTotalCounters(), job.getMapCounters(),
        job.getReduceCounters());
  }

  private void printJobCounters(Counters totalCounters, Counters mapCounters,
                                Counters reduceCounters) throws JSONException {
    // Killed jobs might not have counters
    if (totalCounters != null) {
      JSONObject jGroups = new JSONObject();
      for (CounterGroup counterGroup : totalCounters) {
        String groupName = counterGroup.getName();
        CounterGroup totalGroup = totalCounters.getGroup(groupName);
        CounterGroup mapGroup = mapCounters.getGroup(groupName);
        CounterGroup reduceGroup = reduceCounters.getGroup(groupName);

        Iterator<Counter> ctrItr =
            totalGroup.iterator();
        JSONArray jGroup = new JSONArray();
        while (ctrItr.hasNext()) {
          JSONObject jCounter = new JSONObject();
          org.apache.hadoop.mapreduce.Counter counter = ctrItr.next();
          String name = counter.getName();
          long mapValue = mapGroup.findCounter(name).getValue();
          long reduceValue = reduceGroup.findCounter(name).getValue();
          long totalValue = counter.getValue();

          jCounter.put("counterName", name);
          jCounter.put("mapValue", mapValue);
          jCounter.put("reduceValue", reduceValue);
          jCounter.put("totalValue", totalValue);
          jGroup.put(jCounter);
        }
        jGroups.put(fixGroupNameForShuffleErrors(totalGroup.getName()), jGroup);
      }
      json.put("counters", jGroups);
    }
  }

  private void printTaskSummary() throws JSONException {
    HistoryViewer.SummarizedJob ts = new HistoryViewer.SummarizedJob(job);
    JSONObject jSums = new JSONObject();
    JSONObject jSumSetup = new JSONObject();
    jSumSetup.put("total", ts.totalSetups);
    jSumSetup.put("successful", ts.numFinishedSetups);
    jSumSetup.put("failed", ts.numFailedSetups);
    jSumSetup.put("killed", ts.numKilledSetups);
    jSumSetup.put("startTime", ts.setupStarted);
    jSumSetup.put("finishTime", ts.setupFinished);
    jSums.put("setup", jSumSetup);
    JSONObject jSumMap = new JSONObject();
    jSumMap.put("total", ts.totalMaps);
    jSumMap.put("successful", job.getSucceededMaps());
    jSumMap.put("failed", ts.numFailedMaps);
    jSumMap.put("killed", ts.numKilledMaps);
    jSumMap.put("startTime", ts.mapStarted);
    jSumMap.put("finishTime", ts.mapFinished);
    jSums.put("map", jSumMap);
    JSONObject jSumReduce = new JSONObject();
    jSumReduce.put("total", ts.totalReduces);
    jSumReduce.put("successful", job.getSucceededReduces());
    jSumReduce.put("failed", ts.numFailedReduces);
    jSumReduce.put("killed", ts.numKilledReduces);
    jSumReduce.put("startTime", ts.reduceStarted);
    jSumReduce.put("finishTime", ts.reduceFinished);
    jSums.put("reduce", jSumReduce);
    JSONObject jSumCleanup = new JSONObject();
    jSumCleanup.put("total", ts.totalCleanups);
    jSumCleanup.put("successful", ts.numFinishedCleanups);
    jSumCleanup.put("failed", ts.numFailedCleanups);
    jSumCleanup.put("killed", ts.numKilledCleanups);
    jSumCleanup.put("startTime", ts.cleanupStarted);
    jSumCleanup.put("finishTime", ts.cleanupFinished);
    jSums.put("cleanup", jSumCleanup);
    json.put("taskSummary", jSums);
  }

  private void printTasks() throws JSONException {
    Map<TaskID, JobHistoryParser.TaskInfo> tasks = job.getAllTasks();
    JSONArray jTasks = new JSONArray();
    for (JobHistoryParser.TaskInfo task : tasks.values()) {
      if (!task.getTaskType().equals(TaskType.TASK_CLEANUP) &&
          ((printAll && task.getTaskStatus().equals(
              TaskStatus.State.SUCCEEDED.toString()))
          || task.getTaskStatus().equals(TaskStatus.State.KILLED.toString())
          || task.getTaskStatus().equals(TaskStatus.State.FAILED.toString()))) {
        JSONObject jTask = new JSONObject();
        jTask.put("taskId", task.getTaskId().toString());
        jTask.put("type", task.getTaskType().toString());
        jTask.put("status", task.getTaskStatus());
        jTask.put("startTime", task.getStartTime());
        jTask.put("finishTime", task.getFinishTime());
        if (!task.getError().isEmpty()) {
          jTask.put("error", task.getError());
        }
        if (task.getTaskType().equals(TaskType.MAP)) {
          jTask.put("inputSplits", task.getSplitLocations());
        }
        if (printAll) {
          printTaskCounters(jTask, task.getCounters());
          JSONObject jAtt = new JSONObject();
          for (JobHistoryParser.TaskAttemptInfo attempt :
              task.getAllTaskAttempts().values()) {
            jAtt.put("attemptId", attempt.getAttemptId());
            jAtt.put("startTime", attempt.getStartTime());
            if (task.getTaskType().equals(TaskType.REDUCE)) {
              jAtt.put("shuffleFinished", attempt.getShuffleFinishTime());
              jAtt.put("sortFinished", attempt.getSortFinishTime());
            }
            jAtt.put("finishTime", attempt.getFinishTime());
            jAtt.put("hostName", attempt.getHostname());
            if (!attempt.getError().isEmpty()) {
              jAtt.put("error", task.getError());
            }
            String taskLogsUrl = HistoryViewer.getTaskLogsUrl(scheme, attempt);
            if (taskLogsUrl != null) {
              jAtt.put("taskLogs", taskLogsUrl);
            }
          }
          jTask.put("attempts", jAtt);
        }
        jTasks.put(jTask);
      }
      json.put("tasks", jTasks);
    }
  }

  private void printTaskCounters(JSONObject jTask, Counters taskCounters)
      throws JSONException {
    // Killed tasks might not have counters
    if (taskCounters != null) {
      JSONObject jGroups = new JSONObject();
      for (String groupName : taskCounters.getGroupNames()) {
        CounterGroup group = taskCounters.getGroup(groupName);

        Iterator<Counter> ctrItr = group.iterator();
        JSONArray jGroup = new JSONArray();
        while (ctrItr.hasNext()) {
          JSONObject jCounter = new JSONObject();
          org.apache.hadoop.mapreduce.Counter counter = ctrItr.next();

          jCounter.put("counterName", counter.getName());
          jCounter.put("value", counter.getValue());
          jGroup.put(jCounter);
        }
        jGroups.put(fixGroupNameForShuffleErrors(group.getName()), jGroup);
      }
      jTask.put("counters", jGroups);
    }
  }

  private String fixGroupNameForShuffleErrors(String name) {
    String retName = name;

    if (name.equals("Shuffle Errors")) {
      retName = "org.apache.hadoop.mapreduce.task.reduce.Fetcher.ShuffleErrors";
    }

    return retName;
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AMStartedEvent 源码

hadoop AvroArrayUtils 源码

hadoop EventReader 源码

hadoop EventWriter 源码

hadoop HistoryEvent 源码

hadoop HistoryEventHandler 源码

hadoop HistoryViewer 源码

hadoop HistoryViewerPrinter 源码

hadoop HumanReadableHistoryViewerPrinter 源码

hadoop JobFinishedEvent 源码

0  赞