Examples with VertexStateUpdateParallelismUpdated org.apache.tez.dag.api.event.VertexStateUpdateParallelismUpdated used on opensource projects

Example 1 with VertexStateUpdateParallelismUpdated

use of org.apache.tez.dag.api.event.VertexStateUpdateParallelismUpdated in project tez by apache.

the class VertexImpl method setParallelismWrapper.

private void setParallelismWrapper(int parallelism, VertexLocationHint vertexLocationHint, Map<String, EdgeProperty> sourceEdgeProperties, Map<String, InputSpecUpdate> rootInputSpecUpdates, boolean fromVertexManager) throws AMUserCodeException {
    Preconditions.checkArgument(parallelism >= 0, "Parallelism must be >=0. Value: " + parallelism + " for vertex: " + logIdentifier);
    writeLock.lock();
    this.setParallelismCalledFlag = true;
    try {
        // disallow changing things after a vertex has started
        if (!tasksNotYetScheduled) {
            String msg = "setParallelism cannot be called after scheduling tasks. Vertex: " + getLogIdentifier();
            LOG.info(msg);
            throw new TezUncheckedException(msg);
        }
        if (fromVertexManager && canInitVertex()) {
            // vertex is fully defined. setParallelism has been called. VertexManager should have
            // informed us about this. Otherwise we would have notified listeners that we are fully
            // defined before we are actually fully defined
            Preconditions.checkState(vertexToBeReconfiguredByManager, "Vertex is fully configured but still" + " the reconfiguration API has been called. VertexManager must notify the framework using " + " context.vertexReconfigurationPlanned() before re-configuring the vertex." + " vertexId=" + logIdentifier);
        }
        // Input initializer/Vertex Manager/1-1 split expected to set parallelism.
        if (numTasks == -1) {
            if (getState() != VertexState.INITIALIZING) {
                throw new TezUncheckedException("Vertex state is not Initializing. Value: " + getState() + " for vertex: " + logIdentifier);
            }
            if (sourceEdgeProperties != null) {
                for (Map.Entry<String, EdgeProperty> entry : sourceEdgeProperties.entrySet()) {
                    LOG.info("Replacing edge manager for source:" + entry.getKey() + " destination: " + getLogIdentifier());
                    Vertex sourceVertex = appContext.getCurrentDAG().getVertex(entry.getKey());
                    Edge edge = sourceVertices.get(sourceVertex);
                    try {
                        edge.setEdgeProperty(entry.getValue());
                    } catch (Exception e) {
                        throw new TezUncheckedException("Fail to update EdgeProperty for Edge," + "sourceVertex:" + edge.getSourceVertexName() + "destinationVertex:" + edge.getDestinationVertexName(), e);
                    }
                }
            }
            if (rootInputSpecUpdates != null) {
                LOG.info("Got updated RootInputsSpecs: " + rootInputSpecUpdates.toString());
                // Sanity check for correct number of updates.
                for (Entry<String, InputSpecUpdate> rootInputSpecUpdateEntry : rootInputSpecUpdates.entrySet()) {
                    Preconditions.checkState(rootInputSpecUpdateEntry.getValue().isForAllWorkUnits() || (rootInputSpecUpdateEntry.getValue().getAllNumPhysicalInputs() != null && rootInputSpecUpdateEntry.getValue().getAllNumPhysicalInputs().size() == parallelism), "Not enough input spec updates for root input named " + rootInputSpecUpdateEntry.getKey());
                }
                this.rootInputSpecs.putAll(rootInputSpecUpdates);
            }
            int oldNumTasks = numTasks;
            this.numTasks = parallelism;
            stateChangeNotifier.stateChanged(vertexId, new VertexStateUpdateParallelismUpdated(vertexName, numTasks, oldNumTasks));
            this.createTasks();
            setVertexLocationHint(vertexLocationHint);
            LOG.info("Vertex " + getLogIdentifier() + " parallelism set to " + parallelism);
            if (canInitVertex()) {
                getEventHandler().handle(new VertexEvent(getVertexId(), VertexEventType.V_READY_TO_INIT));
            }
        } else {
            // This is an artificial restriction since there's no way of knowing whether a VertexManager
            // will attempt to update root input specs. When parallelism has not been initialized, the
            // Vertex will not be in started state so it's safe to update the specifications.
            // TODO TEZ-937 - add e mechanism to query vertex managers, or for VMs to indicate readines
            // for a vertex to start.
            Preconditions.checkState(rootInputSpecUpdates == null, "Root Input specs can only be updated when the vertex is configured with -1 tasks");
            int oldNumTasks = numTasks;
            // start buffering incoming events so that we can re-route existing events
            for (Edge edge : sourceVertices.values()) {
                edge.startEventBuffering();
            }
            if (parallelism == numTasks) {
                LOG.info("setParallelism same as current value: " + parallelism + " for vertex: " + logIdentifier);
                Preconditions.checkArgument(sourceEdgeProperties != null, "Source edge managers or RootInputSpecs must be set when not changing parallelism");
            } else {
                LOG.info("Resetting vertex location hints due to change in parallelism for vertex: " + logIdentifier);
                vertexLocationHint = null;
                if (parallelism > numTasks) {
                    addTasks((parallelism));
                } else if (parallelism < numTasks) {
                    removeTasks(parallelism);
                }
            }
            Preconditions.checkState(this.numTasks == parallelism, getLogIdentifier());
            // set new vertex location hints
            setVertexLocationHint(vertexLocationHint);
            LOG.info("Vertex " + getLogIdentifier() + " parallelism set to " + parallelism + " from " + oldNumTasks);
            // notify listeners
            stateChangeNotifier.stateChanged(vertexId, new VertexStateUpdateParallelismUpdated(vertexName, numTasks, oldNumTasks));
            assert tasks.size() == numTasks;
            // set new edge managers
            if (sourceEdgeProperties != null) {
                for (Map.Entry<String, EdgeProperty> entry : sourceEdgeProperties.entrySet()) {
                    LOG.info("Replacing edge manager for source:" + entry.getKey() + " destination: " + getLogIdentifier());
                    Vertex sourceVertex = appContext.getCurrentDAG().getVertex(entry.getKey());
                    Edge edge = sourceVertices.get(sourceVertex);
                    try {
                        edge.setEdgeProperty(entry.getValue());
                    } catch (Exception e) {
                        throw new TezUncheckedException(e);
                    }
                }
            }
            // stop buffering events
            for (Edge edge : sourceVertices.values()) {
                edge.stopEventBuffering();
            }
        }
    } finally {
        writeLock.unlock();
    }
}

Example 2 with VertexStateUpdateParallelismUpdated

use of org.apache.tez.dag.api.event.VertexStateUpdateParallelismUpdated in project tez by apache.

the class TestStateChangeNotifier method testEventsOnRegistration.

@Test(timeout = 5000)
public void testEventsOnRegistration() {
    TezDAGID dagId = TezDAGID.getInstance("1", 1, 1);
    Vertex v1 = createMockVertex(dagId, 1);
    Vertex v2 = createMockVertex(dagId, 2);
    Vertex v3 = createMockVertex(dagId, 3);
    DAG dag = createMockDag(dagId, v1, v2, v3);
    StateChangeNotifierForTest tracker = new StateChangeNotifierForTest(dag);
    // Vertex has sent one event
    notifyTracker(tracker, v1, VertexState.RUNNING);
    VertexStateUpdateListener mockListener11 = mock(VertexStateUpdateListener.class);
    VertexStateUpdateListener mockListener12 = mock(VertexStateUpdateListener.class);
    VertexStateUpdateListener mockListener13 = mock(VertexStateUpdateListener.class);
    VertexStateUpdateListener mockListener14 = mock(VertexStateUpdateListener.class);
    // Register for all states
    tracker.registerForVertexUpdates(v1.getName(), null, mockListener11);
    // Register for all states
    tracker.registerForVertexUpdates(v1.getName(), EnumSet.allOf(VertexState.class), mockListener12);
    // Register for specific state, event generated
    tracker.registerForVertexUpdates(v1.getName(), EnumSet.of(VertexState.RUNNING), mockListener13);
    // Register for specific state, event not generated
    tracker.registerForVertexUpdates(v1.getName(), EnumSet.of(VertexState.SUCCEEDED), mockListener14);
    ArgumentCaptor<VertexStateUpdate> argumentCaptor = ArgumentCaptor.forClass(VertexStateUpdate.class);
    verify(mockListener11, times(1)).onStateUpdated(argumentCaptor.capture());
    assertEquals(VertexState.RUNNING, argumentCaptor.getValue().getVertexState());
    verify(mockListener12, times(1)).onStateUpdated(argumentCaptor.capture());
    assertEquals(VertexState.RUNNING, argumentCaptor.getValue().getVertexState());
    verify(mockListener13, times(1)).onStateUpdated(argumentCaptor.capture());
    assertEquals(VertexState.RUNNING, argumentCaptor.getValue().getVertexState());
    verify(mockListener14, never()).onStateUpdated(any(VertexStateUpdate.class));
    // Vertex has not notified of state
    tracker.reset();
    VertexStateUpdateListener mockListener2 = mock(VertexStateUpdateListener.class);
    tracker.registerForVertexUpdates(v2.getName(), null, mockListener2);
    // there should no be any event sent out
    Assert.assertEquals(0, tracker.totalCount.get());
    verify(mockListener2, never()).onStateUpdated(any(VertexStateUpdate.class));
    // Vertex has notified about parallelism update only
    tracker.stateChanged(v3.getVertexId(), new VertexStateUpdateParallelismUpdated(v3.getName(), 23, -1));
    VertexStateUpdateListener mockListener3 = mock(VertexStateUpdateListener.class);
    tracker.registerForVertexUpdates(v3.getName(), null, mockListener3);
    verify(mockListener3, times(1)).onStateUpdated(argumentCaptor.capture());
    assertEquals(VertexState.PARALLELISM_UPDATED, argumentCaptor.getValue().getVertexState());
}