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

Example 1 with ContainerAllocator

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

the class MRAppMaster method serviceInit.

@Override
protected void serviceInit(final Configuration conf) throws Exception {
    // create the job classloader if enabled
    createJobClassLoader(conf);
    conf.setBoolean(Dispatcher.DISPATCHER_EXIT_ON_ERROR_KEY, true);
    initJobCredentialsAndUGI(conf);
    dispatcher = createDispatcher();
    addIfService(dispatcher);
    taskAttemptFinishingMonitor = createTaskAttemptFinishingMonitor(dispatcher.getEventHandler());
    addIfService(taskAttemptFinishingMonitor);
    context = new RunningAppContext(conf, taskAttemptFinishingMonitor);
    // Job name is the same as the app name util we support DAG of jobs
    // for an app later
    appName = conf.get(MRJobConfig.JOB_NAME, "<missing app name>");
    conf.setInt(MRJobConfig.APPLICATION_ATTEMPT_ID, appAttemptID.getAttemptId());
    newApiCommitter = false;
    jobId = MRBuilderUtils.newJobId(appAttemptID.getApplicationId(), appAttemptID.getApplicationId().getId());
    int numReduceTasks = conf.getInt(MRJobConfig.NUM_REDUCES, 0);
    if ((numReduceTasks > 0 && conf.getBoolean("mapred.reducer.new-api", false)) || (numReduceTasks == 0 && conf.getBoolean("mapred.mapper.new-api", false))) {
        newApiCommitter = true;
        LOG.info("Using mapred newApiCommitter.");
    }
    boolean copyHistory = false;
    committer = createOutputCommitter(conf);
    try {
        String user = UserGroupInformation.getCurrentUser().getShortUserName();
        Path stagingDir = MRApps.getStagingAreaDir(conf, user);
        FileSystem fs = getFileSystem(conf);
        boolean stagingExists = fs.exists(stagingDir);
        Path startCommitFile = MRApps.getStartJobCommitFile(conf, user, jobId);
        boolean commitStarted = fs.exists(startCommitFile);
        Path endCommitSuccessFile = MRApps.getEndJobCommitSuccessFile(conf, user, jobId);
        boolean commitSuccess = fs.exists(endCommitSuccessFile);
        Path endCommitFailureFile = MRApps.getEndJobCommitFailureFile(conf, user, jobId);
        boolean commitFailure = fs.exists(endCommitFailureFile);
        if (!stagingExists) {
            isLastAMRetry = true;
            LOG.info("Attempt num: " + appAttemptID.getAttemptId() + " is last retry: " + isLastAMRetry + " because the staging dir doesn't exist.");
            errorHappenedShutDown = true;
            forcedState = JobStateInternal.ERROR;
            shutDownMessage = "Staging dir does not exist " + stagingDir;
            LOG.fatal(shutDownMessage);
        } else if (commitStarted) {
            //A commit was started so this is the last time, we just need to know
            // what result we will use to notify, and how we will unregister
            errorHappenedShutDown = true;
            isLastAMRetry = true;
            LOG.info("Attempt num: " + appAttemptID.getAttemptId() + " is last retry: " + isLastAMRetry + " because a commit was started.");
            copyHistory = true;
            if (commitSuccess) {
                shutDownMessage = "Job commit succeeded in a prior MRAppMaster attempt " + "before it crashed. Recovering.";
                forcedState = JobStateInternal.SUCCEEDED;
            } else if (commitFailure) {
                shutDownMessage = "Job commit failed in a prior MRAppMaster attempt " + "before it crashed. Not retrying.";
                forcedState = JobStateInternal.FAILED;
            } else {
                if (isCommitJobRepeatable()) {
                    // cleanup previous half done commits if committer supports
                    // repeatable job commit.
                    errorHappenedShutDown = false;
                    cleanupInterruptedCommit(conf, fs, startCommitFile);
                } else {
                    //The commit is still pending, commit error
                    shutDownMessage = "Job commit from a prior MRAppMaster attempt is " + "potentially in progress. Preventing multiple commit executions";
                    forcedState = JobStateInternal.ERROR;
                }
            }
        }
    } catch (IOException e) {
        throw new YarnRuntimeException("Error while initializing", e);
    }
    if (errorHappenedShutDown) {
        NoopEventHandler eater = new NoopEventHandler();
        //We do not have a JobEventDispatcher in this path
        dispatcher.register(JobEventType.class, eater);
        EventHandler<JobHistoryEvent> historyService = null;
        if (copyHistory) {
            historyService = createJobHistoryHandler(context);
            dispatcher.register(org.apache.hadoop.mapreduce.jobhistory.EventType.class, historyService);
        } else {
            dispatcher.register(org.apache.hadoop.mapreduce.jobhistory.EventType.class, eater);
        }
        if (copyHistory) {
            // Now that there's a FINISHING state for application on RM to give AMs
            // plenty of time to clean up after unregister it's safe to clean staging
            // directory after unregistering with RM. So, we start the staging-dir
            // cleaner BEFORE the ContainerAllocator so that on shut-down,
            // ContainerAllocator unregisters first and then the staging-dir cleaner
            // deletes staging directory.
            addService(createStagingDirCleaningService());
        }
        // service to allocate containers from RM (if non-uber) or to fake it (uber)
        containerAllocator = createContainerAllocator(null, context);
        addIfService(containerAllocator);
        dispatcher.register(ContainerAllocator.EventType.class, containerAllocator);
        if (copyHistory) {
            // Add the JobHistoryEventHandler last so that it is properly stopped first.
            // This will guarantee that all history-events are flushed before AM goes
            // ahead with shutdown.
            // Note: Even though JobHistoryEventHandler is started last, if any
            // component creates a JobHistoryEvent in the meanwhile, it will be just be
            // queued inside the JobHistoryEventHandler 
            addIfService(historyService);
            JobHistoryCopyService cpHist = new JobHistoryCopyService(appAttemptID, dispatcher.getEventHandler());
            addIfService(cpHist);
        }
    } else {
        //service to handle requests from JobClient
        clientService = createClientService(context);
        // Init ClientService separately so that we stop it separately, since this
        // service needs to wait some time before it stops so clients can know the
        // final states
        clientService.init(conf);
        containerAllocator = createContainerAllocator(clientService, context);
        //service to handle the output committer
        committerEventHandler = createCommitterEventHandler(context, committer);
        addIfService(committerEventHandler);
        //policy handling preemption requests from RM
        callWithJobClassLoader(conf, new Action<Void>() {

            public Void call(Configuration conf) {
                preemptionPolicy = createPreemptionPolicy(conf);
                preemptionPolicy.init(context);
                return null;
            }
        });
        //service to handle requests to TaskUmbilicalProtocol
        taskAttemptListener = createTaskAttemptListener(context, preemptionPolicy);
        addIfService(taskAttemptListener);
        //service to log job history events
        EventHandler<JobHistoryEvent> historyService = createJobHistoryHandler(context);
        dispatcher.register(org.apache.hadoop.mapreduce.jobhistory.EventType.class, historyService);
        this.jobEventDispatcher = new JobEventDispatcher();
        //register the event dispatchers
        dispatcher.register(JobEventType.class, jobEventDispatcher);
        dispatcher.register(TaskEventType.class, new TaskEventDispatcher());
        dispatcher.register(TaskAttemptEventType.class, new TaskAttemptEventDispatcher());
        dispatcher.register(CommitterEventType.class, committerEventHandler);
        if (conf.getBoolean(MRJobConfig.MAP_SPECULATIVE, false) || conf.getBoolean(MRJobConfig.REDUCE_SPECULATIVE, false)) {
            //optional service to speculate on task attempts' progress
            speculator = createSpeculator(conf, context);
            addIfService(speculator);
        }
        speculatorEventDispatcher = new SpeculatorEventDispatcher(conf);
        dispatcher.register(Speculator.EventType.class, speculatorEventDispatcher);
        // Now that there's a FINISHING state for application on RM to give AMs
        // plenty of time to clean up after unregister it's safe to clean staging
        // directory after unregistering with RM. So, we start the staging-dir
        // cleaner BEFORE the ContainerAllocator so that on shut-down,
        // ContainerAllocator unregisters first and then the staging-dir cleaner
        // deletes staging directory.
        addService(createStagingDirCleaningService());
        // service to allocate containers from RM (if non-uber) or to fake it (uber)
        addIfService(containerAllocator);
        dispatcher.register(ContainerAllocator.EventType.class, containerAllocator);
        // corresponding service to launch allocated containers via NodeManager
        containerLauncher = createContainerLauncher(context);
        addIfService(containerLauncher);
        dispatcher.register(ContainerLauncher.EventType.class, containerLauncher);
        // Add the JobHistoryEventHandler last so that it is properly stopped first.
        // This will guarantee that all history-events are flushed before AM goes
        // ahead with shutdown.
        // Note: Even though JobHistoryEventHandler is started last, if any
        // component creates a JobHistoryEvent in the meanwhile, it will be just be
        // queued inside the JobHistoryEventHandler 
        addIfService(historyService);
    }
    super.serviceInit(conf);
}

Example 2 with ContainerAllocator

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

the class TestStagingCleanup method testDeletionofStagingOnReboot.

// FIXME:
// Disabled this test because currently, when job state=REBOOT at shutdown 
// when lastRetry = true in RM view, cleanup will not do. 
// This will be supported after YARN-2261 completed
//   @Test (timeout = 30000)
public void testDeletionofStagingOnReboot() throws IOException {
    conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, stagingJobDir);
    fs = mock(FileSystem.class);
    when(fs.delete(any(Path.class), anyBoolean())).thenReturn(true);
    String user = UserGroupInformation.getCurrentUser().getShortUserName();
    Path stagingDir = MRApps.getStagingAreaDir(conf, user);
    when(fs.exists(stagingDir)).thenReturn(true);
    ApplicationId appId = ApplicationId.newInstance(System.currentTimeMillis(), 0);
    ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(appId, 1);
    ContainerAllocator mockAlloc = mock(ContainerAllocator.class);
    MRAppMaster appMaster = new TestMRApp(attemptId, mockAlloc, JobStateInternal.REBOOT, //no retry
    1);
    appMaster.init(conf);
    appMaster.start();
    //shutdown the job, is lastRetry
    appMaster.shutDownJob();
    //test whether notifyIsLastAMRetry called
    Assert.assertEquals(true, ((TestMRApp) appMaster).getTestIsLastAMRetry());
    verify(fs).delete(stagingJobPath, true);
}

Example 3 with ContainerAllocator

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

the class TestStagingCleanup method testNoDeletionofStagingOnReboot.

@Test(timeout = 30000)
public void testNoDeletionofStagingOnReboot() throws IOException {
    conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, stagingJobDir);
    fs = mock(FileSystem.class);
    when(fs.delete(any(Path.class), anyBoolean())).thenReturn(true);
    String user = UserGroupInformation.getCurrentUser().getShortUserName();
    Path stagingDir = MRApps.getStagingAreaDir(conf, user);
    when(fs.exists(stagingDir)).thenReturn(true);
    ApplicationId appId = ApplicationId.newInstance(System.currentTimeMillis(), 0);
    ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(appId, 1);
    ContainerAllocator mockAlloc = mock(ContainerAllocator.class);
    Assert.assertTrue(MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS > 1);
    MRAppMaster appMaster = new TestMRApp(attemptId, mockAlloc, JobStateInternal.REBOOT, MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS);
    appMaster.init(conf);
    appMaster.start();
    //shutdown the job, not the lastRetry
    appMaster.shutDownJob();
    //test whether notifyIsLastAMRetry called
    Assert.assertEquals(false, ((TestMRApp) appMaster).getTestIsLastAMRetry());
    verify(fs, times(0)).delete(stagingJobPath, true);
}

Example 4 with ContainerAllocator

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

the class TestStagingCleanup method testByPreserveFailedStaging.

@Test
public void testByPreserveFailedStaging() throws IOException {
    conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, stagingJobDir);
    // TODO: Decide which failed task files that should
    // be kept are in application log directory.
    // Currently all files are not deleted from staging dir.
    conf.setBoolean(MRJobConfig.PRESERVE_FAILED_TASK_FILES, true);
    fs = mock(FileSystem.class);
    when(fs.delete(any(Path.class), anyBoolean())).thenReturn(true);
    //Staging Dir exists
    String user = UserGroupInformation.getCurrentUser().getShortUserName();
    Path stagingDir = MRApps.getStagingAreaDir(conf, user);
    when(fs.exists(stagingDir)).thenReturn(true);
    ApplicationId appId = ApplicationId.newInstance(System.currentTimeMillis(), 0);
    ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(appId, 1);
    JobId jobid = recordFactory.newRecordInstance(JobId.class);
    jobid.setAppId(appId);
    ContainerAllocator mockAlloc = mock(ContainerAllocator.class);
    Assert.assertTrue(MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS > 1);
    MRAppMaster appMaster = new TestMRApp(attemptId, mockAlloc, JobStateInternal.FAILED, MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS);
    appMaster.init(conf);
    appMaster.start();
    appMaster.shutDownJob();
    //test whether notifyIsLastAMRetry called
    Assert.assertEquals(true, ((TestMRApp) appMaster).getTestIsLastAMRetry());
    verify(fs, times(0)).delete(stagingJobPath, true);
}

Example 5 with ContainerAllocator

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

the class TestStagingCleanup method testNotPreserveNotPatternMatchedStaging.

@Test
public void testNotPreserveNotPatternMatchedStaging() throws IOException {
    conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, stagingJobDir);
    conf.set(MRJobConfig.PRESERVE_FILES_PATTERN, "NotMatching");
    fs = mock(FileSystem.class);
    when(fs.delete(any(Path.class), anyBoolean())).thenReturn(true);
    //Staging Dir exists
    String user = UserGroupInformation.getCurrentUser().getShortUserName();
    Path stagingDir = MRApps.getStagingAreaDir(conf, user);
    when(fs.exists(stagingDir)).thenReturn(true);
    ApplicationId appId = ApplicationId.newInstance(System.currentTimeMillis(), 0);
    ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(appId, 1);
    JobId jobid = recordFactory.newRecordInstance(JobId.class);
    jobid.setAppId(appId);
    ContainerAllocator mockAlloc = mock(ContainerAllocator.class);
    Assert.assertTrue(MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS > 1);
    MRAppMaster appMaster = new TestMRApp(attemptId, mockAlloc, JobStateInternal.RUNNING, MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS);
    appMaster.init(conf);
    appMaster.start();
    appMaster.shutDownJob();
    //test whether notifyIsLastAMRetry called
    Assert.assertEquals(true, ((TestMRApp) appMaster).getTestIsLastAMRetry());
    //Staging dir should be deleted because it is not matched with
    //PRESERVE_FILES_PATTERN
    verify(fs, times(1)).delete(stagingJobPath, true);
}