Examples with MRApp org.apache.hadoop.mapreduce.v2.app.MRApp used on opensource projects

Example 6 with MRApp

use of org.apache.hadoop.mapreduce.v2.app.MRApp in project hadoop by apache.

the class TestJobHistoryParsing method testDeleteFileInfo.

/**
   * Test clean old history files. Files should be deleted after 1 week by
   * default.
   */
@Test(timeout = 15000)
public void testDeleteFileInfo() throws Exception {
    LOG.info("STARTING testDeleteFileInfo");
    try {
        Configuration conf = new Configuration();
        conf.setClass(NET_TOPOLOGY_NODE_SWITCH_MAPPING_IMPL_KEY, MyResolver.class, DNSToSwitchMapping.class);
        RackResolver.init(conf);
        MRApp app = new MRAppWithHistory(1, 1, true, this.getClass().getName(), true);
        app.submit(conf);
        Job job = app.getContext().getAllJobs().values().iterator().next();
        JobId jobId = job.getID();
        app.waitForState(job, JobState.SUCCEEDED);
        // make sure all events are flushed
        app.waitForState(Service.STATE.STOPPED);
        HistoryFileManager hfm = new HistoryFileManager();
        hfm.init(conf);
        HistoryFileInfo fileInfo = hfm.getFileInfo(jobId);
        hfm.initExisting();
        // directory
        while (fileInfo.isMovePending()) {
            Thread.sleep(300);
        }
        Assert.assertNotNull(hfm.jobListCache.values());
        // try to remove fileInfo
        hfm.clean();
        // check that fileInfo does not deleted
        Assert.assertFalse(fileInfo.isDeleted());
        // correct live time
        hfm.setMaxHistoryAge(-1);
        hfm.clean();
        hfm.stop();
        Assert.assertTrue("Thread pool shutdown", hfm.moveToDoneExecutor.isTerminated());
        // should be deleted !
        Assert.assertTrue("file should be deleted ", fileInfo.isDeleted());
    } finally {
        LOG.info("FINISHED testDeleteFileInfo");
    }
}

Example 7 with MRApp

use of org.apache.hadoop.mapreduce.v2.app.MRApp in project hadoop by apache.

the class TestFail method testMapFailureMaxPercent.

@Test
public void testMapFailureMaxPercent() throws Exception {
    MRApp app = new MockFirstFailingTaskMRApp(4, 0);
    Configuration conf = new Configuration();
    //reduce the no of attempts so test run faster
    conf.setInt(MRJobConfig.MAP_MAX_ATTEMPTS, 2);
    conf.setInt(MRJobConfig.REDUCE_MAX_ATTEMPTS, 1);
    conf.setInt(MRJobConfig.MAP_FAILURES_MAX_PERCENT, 20);
    conf.setInt(MRJobConfig.MAP_MAX_ATTEMPTS, 1);
    Job job = app.submit(conf);
    app.waitForState(job, JobState.FAILED);
    //setting the failure percentage to 25% (1/4 is 25) will
    //make the Job successful
    app = new MockFirstFailingTaskMRApp(4, 0);
    conf = new Configuration();
    //reduce the no of attempts so test run faster
    conf.setInt(MRJobConfig.MAP_MAX_ATTEMPTS, 2);
    conf.setInt(MRJobConfig.REDUCE_MAX_ATTEMPTS, 1);
    conf.setInt(MRJobConfig.MAP_FAILURES_MAX_PERCENT, 25);
    conf.setInt(MRJobConfig.MAP_MAX_ATTEMPTS, 1);
    job = app.submit(conf);
    app.waitForState(job, JobState.SUCCEEDED);
}

Example 8 with MRApp

use of org.apache.hadoop.mapreduce.v2.app.MRApp in project hadoop by apache.

the class TestFail method testFailTask.

@Test
public //The job succeeds.
void testFailTask() throws Exception {
    MRApp app = new MockFirstFailingAttemptMRApp(1, 0);
    Configuration conf = new Configuration();
    // this test requires two task attempts, but uberization overrides max to 1
    conf.setBoolean(MRJobConfig.JOB_UBERTASK_ENABLE, false);
    Job job = app.submit(conf);
    app.waitForState(job, JobState.SUCCEEDED);
    Map<TaskId, Task> tasks = job.getTasks();
    Assert.assertEquals("Num tasks is not correct", 1, tasks.size());
    Task task = tasks.values().iterator().next();
    Assert.assertEquals("Task state not correct", TaskState.SUCCEEDED, task.getReport().getTaskState());
    Map<TaskAttemptId, TaskAttempt> attempts = tasks.values().iterator().next().getAttempts();
    Assert.assertEquals("Num attempts is not correct", 2, attempts.size());
    //one attempt must be failed 
    //and another must have succeeded
    Iterator<TaskAttempt> it = attempts.values().iterator();
    Assert.assertEquals("Attempt state not correct", TaskAttemptState.FAILED, it.next().getReport().getTaskAttemptState());
    Assert.assertEquals("Attempt state not correct", TaskAttemptState.SUCCEEDED, it.next().getReport().getTaskAttemptState());
}

Example 9 with MRApp

use of org.apache.hadoop.mapreduce.v2.app.MRApp in project hadoop by apache.

the class TestFail method testTaskFailWithUnusedContainer.

@Test
public void testTaskFailWithUnusedContainer() throws Exception {
    MRApp app = new MRAppWithFailingTaskAndUnusedContainer();
    Configuration conf = new Configuration();
    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();
    Assert.assertEquals("Num attempts is not correct", maxAttempts, attempts.size());
    TaskAttempt attempt = attempts.values().iterator().next();
    app.waitForInternalState((TaskAttemptImpl) attempt, TaskAttemptStateInternal.ASSIGNED);
    app.getDispatcher().getEventHandler().handle(new TaskAttemptEvent(attempt.getID(), TaskAttemptEventType.TA_CONTAINER_COMPLETED));
    app.waitForState(job, JobState.FAILED);
}

Example 10 with MRApp

use of org.apache.hadoop.mapreduce.v2.app.MRApp in project hadoop by apache.

the class TestFetchFailure method testFetchFailure.

@Test
public void testFetchFailure() throws Exception {
    MRApp app = new MRApp(1, 1, false, this.getClass().getName(), true);
    Configuration conf = new Configuration();
    // map -> reduce -> fetch-failure -> map retry is incompatible with
    // sequential, single-task-attempt approach in uber-AM, so disable:
    conf.setBoolean(MRJobConfig.JOB_UBERTASK_ENABLE, false);
    Job job = app.submit(conf);
    app.waitForState(job, JobState.RUNNING);
    //all maps would be 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();
    //wait for Task state move to RUNNING
    app.waitForState(mapTask, TaskState.RUNNING);
    TaskAttempt mapAttempt1 = mapTask.getAttempts().values().iterator().next();
    app.waitForState(mapAttempt1, TaskAttemptState.RUNNING);
    //send the done signal to the map attempt
    app.getContext().getEventHandler().handle(new TaskAttemptEvent(mapAttempt1.getID(), TaskAttemptEventType.TA_DONE));
    // wait for map success
    app.waitForState(mapTask, TaskState.SUCCEEDED);
    final int checkIntervalMillis = 10;
    final int waitForMillis = 800;
    GenericTestUtils.waitFor(new Supplier<Boolean>() {

        @Override
        public Boolean get() {
            TaskAttemptCompletionEvent[] events = job.getTaskAttemptCompletionEvents(0, 100);
            return events.length >= 1;
        }
    }, checkIntervalMillis, waitForMillis);
    TaskAttemptCompletionEvent[] events = job.getTaskAttemptCompletionEvents(0, 100);
    Assert.assertEquals("Num completion events not correct", 1, events.length);
    Assert.assertEquals("Event status not correct", TaskAttemptCompletionEventStatus.SUCCEEDED, events[0].getStatus());
    // wait for reduce to start running
    app.waitForState(reduceTask, TaskState.RUNNING);
    TaskAttempt reduceAttempt = reduceTask.getAttempts().values().iterator().next();
    app.waitForState(reduceAttempt, TaskAttemptState.RUNNING);
    //send 3 fetch failures from reduce to trigger map re execution
    sendFetchFailure(app, reduceAttempt, mapAttempt1, "host");
    sendFetchFailure(app, reduceAttempt, mapAttempt1, "host");
    sendFetchFailure(app, reduceAttempt, mapAttempt1, "host");
    //wait for map Task state move back to RUNNING
    app.waitForState(mapTask, TaskState.RUNNING);
    //map attempt must have become FAILED
    Assert.assertEquals("Map TaskAttempt state not correct", TaskAttemptState.FAILED, mapAttempt1.getState());
    Assert.assertEquals("Num attempts in Map Task not correct", 2, mapTask.getAttempts().size());
    Iterator<TaskAttempt> atIt = mapTask.getAttempts().values().iterator();
    atIt.next();
    TaskAttempt mapAttempt2 = atIt.next();
    app.waitForState(mapAttempt2, TaskAttemptState.RUNNING);
    //send the done signal to the second map attempt
    app.getContext().getEventHandler().handle(new TaskAttemptEvent(mapAttempt2.getID(), TaskAttemptEventType.TA_DONE));
    // wait for map success
    app.waitForState(mapTask, TaskState.SUCCEEDED);
    //send done to reduce
    app.getContext().getEventHandler().handle(new TaskAttemptEvent(reduceAttempt.getID(), TaskAttemptEventType.TA_DONE));
    app.waitForState(job, JobState.SUCCEEDED);
    //previous completion event now becomes obsolete
    Assert.assertEquals("Event status not correct", TaskAttemptCompletionEventStatus.OBSOLETE, events[0].getStatus());
    events = job.getTaskAttemptCompletionEvents(0, 100);
    Assert.assertEquals("Num completion events not correct", 4, events.length);
    Assert.assertEquals("Event map attempt id not correct", mapAttempt1.getID(), events[0].getAttemptId());
    Assert.assertEquals("Event map attempt id not correct", mapAttempt1.getID(), events[1].getAttemptId());
    Assert.assertEquals("Event map attempt id not correct", mapAttempt2.getID(), events[2].getAttemptId());
    Assert.assertEquals("Event redude attempt id not correct", reduceAttempt.getID(), events[3].getAttemptId());
    Assert.assertEquals("Event status not correct for map attempt1", TaskAttemptCompletionEventStatus.OBSOLETE, events[0].getStatus());
    Assert.assertEquals("Event status not correct for map attempt1", TaskAttemptCompletionEventStatus.FAILED, events[1].getStatus());
    Assert.assertEquals("Event status not correct for map attempt2", TaskAttemptCompletionEventStatus.SUCCEEDED, events[2].getStatus());
    Assert.assertEquals("Event status not correct for reduce attempt1", TaskAttemptCompletionEventStatus.SUCCEEDED, events[3].getStatus());
    TaskCompletionEvent[] mapEvents = job.getMapAttemptCompletionEvents(0, 2);
    TaskCompletionEvent[] convertedEvents = TypeConverter.fromYarn(events);
    Assert.assertEquals("Incorrect number of map events", 2, mapEvents.length);
    Assert.assertArrayEquals("Unexpected map events", Arrays.copyOfRange(convertedEvents, 0, 2), mapEvents);
    mapEvents = job.getMapAttemptCompletionEvents(2, 200);
    Assert.assertEquals("Incorrect number of map events", 1, mapEvents.length);
    Assert.assertEquals("Unexpected map event", convertedEvents[2], mapEvents[0]);
}