Examples with TaskAttemptKilledEvent org.apache.tez.runtime.api.events.TaskAttemptKilledEvent used on opensource projects

Example 1 with TaskAttemptKilledEvent

use of org.apache.tez.runtime.api.events.TaskAttemptKilledEvent in project tez by apache.

the class TaskCommunicatorManager method heartbeat.

public TaskHeartbeatResponse heartbeat(TaskHeartbeatRequest request) throws IOException, TezException {
    ContainerId containerId = ConverterUtils.toContainerId(request.getContainerIdentifier());
    if (LOG.isDebugEnabled()) {
        LOG.debug("Received heartbeat from container" + ", request=" + request);
    }
    if (!registeredContainers.containsKey(containerId)) {
        LOG.warn("Received task heartbeat from unknown container with id: " + containerId + ", asking it to die");
        return RESPONSE_SHOULD_DIE;
    }
    // A heartbeat can come in anytime. The AM may have made a decision to kill a running task/container
    // meanwhile. If the decision is processed through the pipeline before the heartbeat is processed,
    // the heartbeat will be dropped. Otherwise the heartbeat will be processed - and the system
    // know how to handle this - via FailedInputEvents for example (relevant only if the heartbeat has events).
    // So - avoiding synchronization.
    pingContainerHeartbeatHandler(containerId);
    TaskAttemptEventInfo eventInfo = new TaskAttemptEventInfo(0, null, 0);
    TezTaskAttemptID taskAttemptID = request.getTaskAttemptId();
    if (taskAttemptID != null) {
        ContainerId containerIdFromMap = registeredAttempts.get(taskAttemptID);
        if (containerIdFromMap == null || !containerIdFromMap.equals(containerId)) {
            // This can happen when a task heartbeats. Meanwhile the container is unregistered.
            // The information will eventually make it through to the plugin via a corresponding unregister.
            // There's a race in that case between the unregister making it through, and this method returning.
            // TODO TEZ-2003 (post) TEZ-2666. An exception back is likely a better approach than sending a shouldDie = true,
            // so that the plugin can handle the scenario. Alternately augment the response with error codes.
            // Error codes would be better than exceptions.
            LOG.info("Attempt: " + taskAttemptID + " is not recognized for heartbeats");
            return RESPONSE_SHOULD_DIE;
        }
        List<TezEvent> inEvents = request.getEvents();
        if (LOG.isDebugEnabled()) {
            LOG.debug("Ping from " + taskAttemptID.toString() + " events: " + (inEvents != null ? inEvents.size() : -1));
        }
        long currTime = context.getClock().getTime();
        // taFinishedEvents - means the TaskAttemptFinishedEvent
        // taGeneratedEvents - for recovery, means the events generated by this task attempt and is needed by its downstream vertices
        // eventsForVertex - including all the taGeneratedEvents and other events such as INPUT_READ_ERROR_EVENT/INPUT_FAILED_EVENT
        // taGeneratedEvents is routed both to TaskAttempt & Vertex. Route to Vertex is for performance consideration
        // taFinishedEvents must be routed before taGeneratedEvents
        List<TezEvent> taFinishedEvents = new ArrayList<TezEvent>();
        List<TezEvent> taGeneratedEvents = new ArrayList<TezEvent>();
        List<TezEvent> eventsForVertex = new ArrayList<TezEvent>();
        TaskAttemptEventStatusUpdate taskAttemptEvent = null;
        boolean readErrorReported = false;
        for (TezEvent tezEvent : ListUtils.emptyIfNull(inEvents)) {
            // for now, set the event time on the AM when it is received.
            // this avoids any time disparity between machines.
            tezEvent.setEventReceivedTime(currTime);
            final EventType eventType = tezEvent.getEventType();
            if (eventType == EventType.TASK_STATUS_UPDATE_EVENT) {
                // send TA_STATUS_UPDATE before TA_DONE/TA_FAILED/TA_KILLED otherwise Status may be missed
                taskAttemptEvent = new TaskAttemptEventStatusUpdate(taskAttemptID, (TaskStatusUpdateEvent) tezEvent.getEvent());
            } else if (eventType == EventType.TASK_ATTEMPT_COMPLETED_EVENT || eventType == EventType.TASK_ATTEMPT_FAILED_EVENT || eventType == EventType.TASK_ATTEMPT_KILLED_EVENT) {
                taFinishedEvents.add(tezEvent);
            } else {
                if (eventType == EventType.INPUT_READ_ERROR_EVENT) {
                    readErrorReported = true;
                }
                if (eventType == EventType.DATA_MOVEMENT_EVENT || eventType == EventType.COMPOSITE_DATA_MOVEMENT_EVENT || eventType == EventType.ROOT_INPUT_INITIALIZER_EVENT || eventType == EventType.VERTEX_MANAGER_EVENT) {
                    taGeneratedEvents.add(tezEvent);
                }
                eventsForVertex.add(tezEvent);
            }
        }
        if (taskAttemptEvent != null) {
            taskAttemptEvent.setReadErrorReported(readErrorReported);
            sendEvent(taskAttemptEvent);
        }
        // route taGeneratedEvents to TaskAttempt
        if (!taGeneratedEvents.isEmpty()) {
            sendEvent(new TaskAttemptEventTezEventUpdate(taskAttemptID, taGeneratedEvents));
        }
        // route events to TaskAttempt
        Preconditions.checkArgument(taFinishedEvents.size() <= 1, "Multiple TaskAttemptFinishedEvent");
        for (TezEvent e : taFinishedEvents) {
            EventMetaData sourceMeta = e.getSourceInfo();
            switch(e.getEventType()) {
                case TASK_ATTEMPT_FAILED_EVENT:
                case TASK_ATTEMPT_KILLED_EVENT:
                    TaskAttemptTerminationCause errCause = null;
                    switch(sourceMeta.getEventGenerator()) {
                        case INPUT:
                            errCause = TaskAttemptTerminationCause.INPUT_READ_ERROR;
                            break;
                        case PROCESSOR:
                            errCause = TaskAttemptTerminationCause.APPLICATION_ERROR;
                            break;
                        case OUTPUT:
                            errCause = TaskAttemptTerminationCause.OUTPUT_WRITE_ERROR;
                            break;
                        case SYSTEM:
                            errCause = TaskAttemptTerminationCause.FRAMEWORK_ERROR;
                            break;
                        default:
                            throw new TezUncheckedException("Unknown EventProducerConsumerType: " + sourceMeta.getEventGenerator());
                    }
                    if (e.getEventType() == EventType.TASK_ATTEMPT_FAILED_EVENT) {
                        TaskAttemptFailedEvent taskFailedEvent = (TaskAttemptFailedEvent) e.getEvent();
                        sendEvent(new TaskAttemptEventAttemptFailed(sourceMeta.getTaskAttemptID(), TaskAttemptEventType.TA_FAILED, taskFailedEvent.getTaskFailureType(), "Error: " + taskFailedEvent.getDiagnostics(), errCause));
                    } else {
                        // Killed
                        TaskAttemptKilledEvent taskKilledEvent = (TaskAttemptKilledEvent) e.getEvent();
                        sendEvent(new TaskAttemptEventAttemptKilled(sourceMeta.getTaskAttemptID(), "Error: " + taskKilledEvent.getDiagnostics(), errCause));
                    }
                    break;
                case TASK_ATTEMPT_COMPLETED_EVENT:
                    sendEvent(new TaskAttemptEvent(sourceMeta.getTaskAttemptID(), TaskAttemptEventType.TA_DONE));
                    break;
                default:
                    throw new TezUncheckedException("Unhandled tez event type: " + e.getEventType());
            }
        }
        if (!eventsForVertex.isEmpty()) {
            TezVertexID vertexId = taskAttemptID.getTaskID().getVertexID();
            sendEvent(new VertexEventRouteEvent(vertexId, Collections.unmodifiableList(eventsForVertex)));
        }
        taskHeartbeatHandler.pinged(taskAttemptID);
        eventInfo = context.getCurrentDAG().getVertex(taskAttemptID.getTaskID().getVertexID()).getTaskAttemptTezEvents(taskAttemptID, request.getStartIndex(), request.getPreRoutedStartIndex(), request.getMaxEvents());
    }
    return new TaskHeartbeatResponse(false, eventInfo.getEvents(), eventInfo.getNextFromEventId(), eventInfo.getNextPreRoutedFromEventId());
}

Example 2 with TaskAttemptKilledEvent

use of org.apache.tez.runtime.api.events.TaskAttemptKilledEvent in project tez by apache.

the class TezEvent method deserializeEvent.

private void deserializeEvent(DataInput in) throws IOException {
    if (!in.readBoolean()) {
        event = null;
        return;
    }
    eventType = EventType.values()[in.readInt()];
    eventReceivedTime = in.readLong();
    if (eventType.equals(EventType.TASK_STATUS_UPDATE_EVENT)) {
        // TODO NEWTEZ convert to PB
        event = new TaskStatusUpdateEvent();
        ((TaskStatusUpdateEvent) event).readFields(in);
    } else {
        int eventBytesLen = in.readInt();
        byte[] eventBytes;
        CodedInputStream input;
        int startOffset = 0;
        if (in instanceof DataInputBuffer) {
            eventBytes = ((DataInputBuffer) in).getData();
            startOffset = ((DataInputBuffer) in).getPosition();
        } else {
            eventBytes = new byte[eventBytesLen];
            in.readFully(eventBytes);
        }
        input = CodedInputStream.newInstance(eventBytes, startOffset, eventBytesLen);
        switch(eventType) {
            case CUSTOM_PROCESSOR_EVENT:
                CustomProcessorEventProto cpProto = CustomProcessorEventProto.parseFrom(input);
                event = ProtoConverters.convertCustomProcessorEventFromProto(cpProto);
                break;
            case DATA_MOVEMENT_EVENT:
                DataMovementEventProto dmProto = DataMovementEventProto.parseFrom(input);
                event = ProtoConverters.convertDataMovementEventFromProto(dmProto);
                break;
            case COMPOSITE_ROUTED_DATA_MOVEMENT_EVENT:
                CompositeRoutedDataMovementEventProto edmProto = CompositeRoutedDataMovementEventProto.parseFrom(eventBytes);
                event = ProtoConverters.convertCompositeRoutedDataMovementEventFromProto(edmProto);
                break;
            case COMPOSITE_DATA_MOVEMENT_EVENT:
                CompositeEventProto cProto = CompositeEventProto.parseFrom(input);
                event = ProtoConverters.convertCompositeDataMovementEventFromProto(cProto);
                break;
            case VERTEX_MANAGER_EVENT:
                VertexManagerEventProto vmProto = VertexManagerEventProto.parseFrom(input);
                event = ProtoConverters.convertVertexManagerEventFromProto(vmProto);
                break;
            case INPUT_READ_ERROR_EVENT:
                InputReadErrorEventProto ideProto = InputReadErrorEventProto.parseFrom(input);
                event = InputReadErrorEvent.create(ideProto.getDiagnostics(), ideProto.getIndex(), ideProto.getVersion());
                break;
            case TASK_ATTEMPT_FAILED_EVENT:
                TaskAttemptFailedEventProto tfProto = TaskAttemptFailedEventProto.parseFrom(input);
                event = new TaskAttemptFailedEvent(tfProto.getDiagnostics(), TezConverterUtils.failureTypeFromProto(tfProto.getTaskFailureType()));
                break;
            case TASK_ATTEMPT_KILLED_EVENT:
                TaskAttemptKilledEventProto tkProto = TaskAttemptKilledEventProto.parseFrom(input);
                event = new TaskAttemptKilledEvent(tkProto.getDiagnostics());
                break;
            case TASK_ATTEMPT_COMPLETED_EVENT:
                event = new TaskAttemptCompletedEvent();
                break;
            case INPUT_FAILED_EVENT:
                InputFailedEventProto ifProto = InputFailedEventProto.parseFrom(input);
                event = InputFailedEvent.create(ifProto.getTargetIndex(), ifProto.getVersion());
                break;
            case ROOT_INPUT_DATA_INFORMATION_EVENT:
                RootInputDataInformationEventProto difProto = RootInputDataInformationEventProto.parseFrom(input);
                event = ProtoConverters.convertRootInputDataInformationEventFromProto(difProto);
                break;
            case ROOT_INPUT_INITIALIZER_EVENT:
                EventProtos.RootInputInitializerEventProto riiProto = EventProtos.RootInputInitializerEventProto.parseFrom(input);
                event = ProtoConverters.convertRootInputInitializerEventFromProto(riiProto);
                break;
            default:
                // RootInputUpdatePayload event not wrapped in a TezEvent.
                throw new TezUncheckedException("Unexpected TezEvent" + ", type=" + eventType);
        }
        if (in instanceof DataInputBuffer) {
            // Skip so that position is updated
            int skipped = in.skipBytes(eventBytesLen);
            if (skipped != eventBytesLen) {
                throw new TezUncheckedException("Expected to skip " + eventBytesLen + " bytes. Actually skipped = " + skipped);
            }
        }
    }
}

Example 3 with TaskAttemptKilledEvent

use of org.apache.tez.runtime.api.events.TaskAttemptKilledEvent in project tez by apache.

the class TezEvent method serializeEvent.

private void serializeEvent(DataOutput out) throws IOException {
    if (event == null) {
        out.writeBoolean(false);
        return;
    }
    out.writeBoolean(true);
    out.writeInt(eventType.ordinal());
    out.writeLong(eventReceivedTime);
    if (eventType.equals(EventType.TASK_STATUS_UPDATE_EVENT)) {
        // TODO NEWTEZ convert to PB
        TaskStatusUpdateEvent sEvt = (TaskStatusUpdateEvent) event;
        sEvt.write(out);
    } else {
        AbstractMessage message;
        switch(eventType) {
            case CUSTOM_PROCESSOR_EVENT:
                message = ProtoConverters.convertCustomProcessorEventToProto((CustomProcessorEvent) event);
                break;
            case DATA_MOVEMENT_EVENT:
                message = ProtoConverters.convertDataMovementEventToProto((DataMovementEvent) event);
                break;
            case COMPOSITE_ROUTED_DATA_MOVEMENT_EVENT:
                message = ProtoConverters.convertCompositeRoutedDataMovementEventToProto((CompositeRoutedDataMovementEvent) event);
                break;
            case COMPOSITE_DATA_MOVEMENT_EVENT:
                message = ProtoConverters.convertCompositeDataMovementEventToProto((CompositeDataMovementEvent) event);
                break;
            case VERTEX_MANAGER_EVENT:
                message = ProtoConverters.convertVertexManagerEventToProto((VertexManagerEvent) event);
                break;
            case INPUT_READ_ERROR_EVENT:
                InputReadErrorEvent ideEvt = (InputReadErrorEvent) event;
                message = InputReadErrorEventProto.newBuilder().setIndex(ideEvt.getIndex()).setDiagnostics(ideEvt.getDiagnostics()).setVersion(ideEvt.getVersion()).build();
                break;
            case TASK_ATTEMPT_FAILED_EVENT:
                TaskAttemptFailedEvent tfEvt = (TaskAttemptFailedEvent) event;
                message = TaskAttemptFailedEventProto.newBuilder().setDiagnostics(tfEvt.getDiagnostics()).setTaskFailureType(TezConverterUtils.failureTypeToProto(tfEvt.getTaskFailureType())).build();
                break;
            case TASK_ATTEMPT_KILLED_EVENT:
                TaskAttemptKilledEvent tkEvent = (TaskAttemptKilledEvent) event;
                message = TaskAttemptKilledEventProto.newBuilder().setDiagnostics(tkEvent.getDiagnostics()).build();
                break;
            case TASK_ATTEMPT_COMPLETED_EVENT:
                message = TaskAttemptCompletedEventProto.newBuilder().build();
                break;
            case INPUT_FAILED_EVENT:
                InputFailedEvent ifEvt = (InputFailedEvent) event;
                message = InputFailedEventProto.newBuilder().setTargetIndex(ifEvt.getTargetIndex()).setVersion(ifEvt.getVersion()).build();
                break;
            case ROOT_INPUT_DATA_INFORMATION_EVENT:
                message = ProtoConverters.convertRootInputDataInformationEventToProto((InputDataInformationEvent) event);
                break;
            case ROOT_INPUT_INITIALIZER_EVENT:
                message = ProtoConverters.convertRootInputInitializerEventToProto((InputInitializerEvent) event);
                break;
            default:
                throw new TezUncheckedException("Unknown TezEvent" + ", type=" + eventType);
        }
        if (out instanceof OutputStream) {
            // DataOutputBuffer extends DataOutputStream
            int serializedSize = message.getSerializedSize();
            out.writeInt(serializedSize);
            int buffersize = serializedSize < CodedOutputStream.DEFAULT_BUFFER_SIZE ? serializedSize : CodedOutputStream.DEFAULT_BUFFER_SIZE;
            CodedOutputStream codedOut = CodedOutputStream.newInstance((OutputStream) out, buffersize);
            message.writeTo(codedOut);
            codedOut.flush();
        } else {
            byte[] eventBytes = message.toByteArray();
            out.writeInt(eventBytes.length);
            out.write(eventBytes);
        }
    }
}