Package org.apache.hadoop.mapreduce.v2.app.job

Examples of org.apache.hadoop.mapreduce.v2.app.job.Job

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    int maxAttempts = 1;
    conf.setInt(MRJobConfig.MAP_MAX_ATTEMPTS, maxAttempts);
    // disable uberization (requires entire job to be reattempted, so max for
    // subtask attempts is overridden to 1)
    conf.setBoolean(MRJobConfig.JOB_UBERTASK_ENABLE, false);
    Job job = app.submit(conf);
    app.waitForState(job, JobState.RUNNING);
    Map<TaskId, Task> tasks = job.getTasks();
    Assert.assertEquals("Num tasks is not correct", 1, tasks.size());
    Task task = tasks.values().iterator().next();
    app.waitForState(task, TaskState.SCHEDULED);
    Map<TaskAttemptId, TaskAttempt> attempts = tasks.values().iterator()
        .next().getAttempts();
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    final CountDownLatch latch = new CountDownLatch(1);
   
    MRApp app = new BlockingMRApp(1, 0, latch);
    //this will start the job but job won't complete as task is
    //blocked
    Job job = app.submit(new Configuration());
   
    //wait and vailidate for Job to become RUNNING
    app.waitForState(job, JobState.RUNNING);
   
    //send the kill signal to Job
    app.getContext().getEventHandler().handle(
        new JobEvent(job.getID(), JobEventType.JOB_KILL));
   
    //unblock Task
    latch.countDown();

    //wait and validate for Job to be KILLED
    app.waitForState(job, JobState.KILLED);
    Map<TaskId,Task> tasks = job.getTasks();
    Assert.assertEquals("No of tasks is not correct", 1,
        tasks.size());
    Task task = tasks.values().iterator().next();
    Assert.assertEquals("Task state not correct", TaskState.KILLED,
        task.getReport().getTaskState());
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  @Test
  public void testKillTask() throws Exception {
    final CountDownLatch latch = new CountDownLatch(1);
    MRApp app = new BlockingMRApp(2, 0, latch);
    //this will start the job but job won't complete as Task is blocked
    Job job = app.submit(new Configuration());
   
    //wait and vailidate for Job to become RUNNING
    app.waitForState(job, JobState.RUNNING);
    Map<TaskId,Task> tasks = job.getTasks();
    Assert.assertEquals("No of tasks is not correct", 2,
        tasks.size());
    Iterator<Task> it = tasks.values().iterator();
    Task task1 = it.next();
    Task task2 = it.next();
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      @Override
      public Dispatcher createDispatcher() {
        return dispatcher;
      }
    };
    Job job = app.submit(new Configuration());
    JobId jobId = app.getJobId();
    app.waitForState(job, JobState.RUNNING);
    Assert.assertEquals("Num tasks not correct", 2, job.getTasks().size());
    Iterator<Task> it = job.getTasks().values().iterator();
    Task mapTask = it.next();
    Task reduceTask = it.next();
    app.waitForState(mapTask, TaskState.RUNNING);
    app.waitForState(reduceTask, TaskState.RUNNING);
    TaskAttempt mapAttempt = mapTask.getAttempts().values().iterator().next();
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      @Override
      public Dispatcher createDispatcher() {
        return dispatcher;
      }
    };
    Job job = app.submit(new Configuration());
    JobId jobId = app.getJobId();
    app.waitForState(job, JobState.RUNNING);
    Assert.assertEquals("Num tasks not correct", 2, job.getTasks().size());
    Iterator<Task> it = job.getTasks().values().iterator();
    Task mapTask = it.next();
    Task reduceTask = it.next();
    app.waitForState(mapTask, TaskState.RUNNING);
    app.waitForState(reduceTask, TaskState.RUNNING);
    TaskAttempt mapAttempt = mapTask.getAttempts().values().iterator().next();
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  @Test
  public void testKillTaskAttempt() throws Exception {
    final CountDownLatch latch = new CountDownLatch(1);
    MRApp app = new BlockingMRApp(2, 0, latch);
    //this will start the job but job won't complete as Task is blocked
    Job job = app.submit(new Configuration());
   
    //wait and vailidate for Job to become RUNNING
    app.waitForState(job, JobState.RUNNING);
    Map<TaskId,Task> tasks = job.getTasks();
    Assert.assertEquals("No of tasks is not correct", 2,
        tasks.size());
    Iterator<Task> it = tasks.values().iterator();
    Task task1 = it.next();
    Task task2 = it.next();
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public class TestMRApp {

  @Test
  public void testMapReduce() throws Exception {
    MRApp app = new MRApp(2, 2, true, this.getClass().getName(), true);
    Job job = app.submit(new Configuration());
    app.waitForState(job, JobState.SUCCEEDED);
    app.verifyCompleted();
    Assert.assertEquals(System.getProperty("user.name"),job.getUserName());
  }
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  }

  @Test
  public void testZeroMaps() throws Exception {
    MRApp app = new MRApp(0, 1, true, this.getClass().getName(), true);
    Job job = app.submit(new Configuration());
    app.waitForState(job, JobState.SUCCEEDED);
    app.verifyCompleted();
  }
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  }
 
  @Test
  public void testZeroMapReduces() throws Exception{
    MRApp app = new MRApp(0, 0, true, this.getClass().getName(), true);
    Job job = app.submit(new Configuration());
    app.waitForState(job, JobState.SUCCEEDED);
  }
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  }
 
  @Test
  public void testCommitPending() throws Exception {
    MRApp app = new MRApp(1, 0, false, this.getClass().getName(), true);
    Job job = app.submit(new Configuration());
    app.waitForState(job, JobState.RUNNING);
    Assert.assertEquals("Num tasks not correct", 1, job.getTasks().size());
    Iterator<Task> it = job.getTasks().values().iterator();
    Task task = it.next();
    app.waitForState(task, TaskState.RUNNING);
    TaskAttempt attempt = task.getAttempts().values().iterator().next();
    app.waitForState(attempt, TaskAttemptState.RUNNING);
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Related Classes of org.apache.hadoop.mapreduce.v2.app.job.Job

  • org.apache.hadoop.conf.Configuration
  • org.apache.hadoop.fs.FileSystem
  • org.apache.hadoop.fs.FSDataInputStream
  • org.apache.hadoop.fs.Path
  • org.apache.hadoop.fs.permission.FsPermission
  • org.apache.hadoop.mapred.JobConf
  • org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler
  • org.apache.hadoop.mapred.LocalContainerLauncher$SubtaskRunner
  • org.apache.hadoop.mapred.TaskAttemptListenerImpl
  • org.apache.hadoop.mapred.TestClientRedirect
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