Examples with TaskCheckpointID org.apache.hadoop.mapreduce.checkpoint.TaskCheckpointID used on opensource projects

Example 1 with TaskCheckpointID

use of org.apache.hadoop.mapreduce.checkpoint.TaskCheckpointID in project hadoop by apache.

the class TestTaskAttemptListenerImpl method testCheckpointIDTracking.

@Test
public void testCheckpointIDTracking() throws IOException, InterruptedException {
    SystemClock clock = SystemClock.getInstance();
    org.apache.hadoop.mapreduce.v2.app.job.Task mockTask = mock(org.apache.hadoop.mapreduce.v2.app.job.Task.class);
    when(mockTask.canCommit(any(TaskAttemptId.class))).thenReturn(true);
    Job mockJob = mock(Job.class);
    when(mockJob.getTask(any(TaskId.class))).thenReturn(mockTask);
    Dispatcher dispatcher = mock(Dispatcher.class);
    @SuppressWarnings("unchecked") EventHandler<Event> ea = mock(EventHandler.class);
    when(dispatcher.getEventHandler()).thenReturn(ea);
    RMHeartbeatHandler rmHeartbeatHandler = mock(RMHeartbeatHandler.class);
    AppContext appCtx = mock(AppContext.class);
    when(appCtx.getJob(any(JobId.class))).thenReturn(mockJob);
    when(appCtx.getClock()).thenReturn(clock);
    when(appCtx.getEventHandler()).thenReturn(ea);
    JobTokenSecretManager secret = mock(JobTokenSecretManager.class);
    final TaskHeartbeatHandler hbHandler = mock(TaskHeartbeatHandler.class);
    when(appCtx.getEventHandler()).thenReturn(ea);
    CheckpointAMPreemptionPolicy policy = new CheckpointAMPreemptionPolicy();
    policy.init(appCtx);
    TaskAttemptListenerImpl listener = new MockTaskAttemptListenerImpl(appCtx, secret, rmHeartbeatHandler, policy) {

        @Override
        protected void registerHeartbeatHandler(Configuration conf) {
            taskHeartbeatHandler = hbHandler;
        }
    };
    Configuration conf = new Configuration();
    conf.setBoolean(MRJobConfig.TASK_PREEMPTION, true);
    //conf.setBoolean("preemption.reduce", true);
    listener.init(conf);
    listener.start();
    TaskAttemptID tid = new TaskAttemptID("12345", 1, TaskType.REDUCE, 1, 0);
    List<Path> partialOut = new ArrayList<Path>();
    partialOut.add(new Path("/prev1"));
    partialOut.add(new Path("/prev2"));
    Counters counters = mock(Counters.class);
    final long CBYTES = 64L * 1024 * 1024;
    final long CTIME = 4344L;
    final Path CLOC = new Path("/test/1");
    Counter cbytes = mock(Counter.class);
    when(cbytes.getValue()).thenReturn(CBYTES);
    Counter ctime = mock(Counter.class);
    when(ctime.getValue()).thenReturn(CTIME);
    when(counters.findCounter(eq(EnumCounter.CHECKPOINT_BYTES))).thenReturn(cbytes);
    when(counters.findCounter(eq(EnumCounter.CHECKPOINT_MS))).thenReturn(ctime);
    // propagating a taskstatus that contains a checkpoint id
    TaskCheckpointID incid = new TaskCheckpointID(new FSCheckpointID(CLOC), partialOut, counters);
    listener.setCheckpointID(org.apache.hadoop.mapred.TaskID.downgrade(tid.getTaskID()), incid);
    // and try to get it back
    CheckpointID outcid = listener.getCheckpointID(tid.getTaskID());
    TaskCheckpointID tcid = (TaskCheckpointID) outcid;
    assertEquals(CBYTES, tcid.getCheckpointBytes());
    assertEquals(CTIME, tcid.getCheckpointTime());
    assertTrue(partialOut.containsAll(tcid.getPartialCommittedOutput()));
    assertTrue(tcid.getPartialCommittedOutput().containsAll(partialOut));
    //assert it worked
    assert outcid == incid;
    listener.stop();
}