Examples with SlotProvider org.apache.flink.runtime.instance.SlotProvider used on opensource projects

Example 1 with SlotProvider

use of org.apache.flink.runtime.instance.SlotProvider in project flink by apache.

the class ExecutionGraphSchedulingTest method testExecutionJobVertexAllocateResourcesReleasesOnException.

/**
	 * Tests that the {@link ExecutionJobVertex#allocateResourcesForAll(SlotProvider, boolean)} method
	 * releases partially acquired resources upon exception.
	 */
@Test
public void testExecutionJobVertexAllocateResourcesReleasesOnException() throws Exception {
    final int parallelism = 8;
    final JobVertex vertex = new JobVertex("vertex");
    vertex.setParallelism(parallelism);
    vertex.setInvokableClass(NoOpInvokable.class);
    final JobID jobId = new JobID();
    final JobGraph jobGraph = new JobGraph(jobId, "test", vertex);
    // set up some available slots and some slot owner that accepts released slots back
    final List<SimpleSlot> returnedSlots = new ArrayList<>();
    final SlotOwner recycler = new SlotOwner() {

        @Override
        public boolean returnAllocatedSlot(Slot slot) {
            returnedSlots.add((SimpleSlot) slot);
            return true;
        }
    };
    // slot provider that hand out parallelism / 3 slots, then throws an exception
    final SlotProvider slotProvider = mock(SlotProvider.class);
    final TaskManagerGateway taskManager = mock(TaskManagerGateway.class);
    final List<SimpleSlot> availableSlots = new ArrayList<>(Arrays.asList(createSlot(taskManager, jobId, recycler), createSlot(taskManager, jobId, recycler), createSlot(taskManager, jobId, recycler)));
    when(slotProvider.allocateSlot(any(ScheduledUnit.class), anyBoolean())).then(new Answer<Future<SimpleSlot>>() {

        @Override
        public Future<SimpleSlot> answer(InvocationOnMock invocation) {
            if (availableSlots.isEmpty()) {
                throw new TestRuntimeException();
            } else {
                return FlinkCompletableFuture.completed(availableSlots.remove(0));
            }
        }
    });
    final ExecutionGraph eg = createExecutionGraph(jobGraph, slotProvider);
    final ExecutionJobVertex ejv = eg.getJobVertex(vertex.getID());
    // acquire resources and check that all are back after the failure
    final int numSlotsToExpectBack = availableSlots.size();
    try {
        ejv.allocateResourcesForAll(slotProvider, false);
        fail("should have failed with an exception");
    } catch (TestRuntimeException e) {
    // expected
    }
    assertEquals(numSlotsToExpectBack, returnedSlots.size());
}

Example 2 with SlotProvider

use of org.apache.flink.runtime.instance.SlotProvider in project flink by apache.

the class ExecutionGraphSchedulingTest method testExecutionGraphScheduleReleasesResourcesOnException.

/**
	 * Tests that the {@link ExecutionGraph#scheduleForExecution()} method
	 * releases partially acquired resources upon exception.
	 */
@Test
public void testExecutionGraphScheduleReleasesResourcesOnException() throws Exception {
    //                                            [pipelined]
    //  we construct a simple graph    (source) ----------------> (target)
    final int parallelism = 3;
    final JobVertex sourceVertex = new JobVertex("source");
    sourceVertex.setParallelism(parallelism);
    sourceVertex.setInvokableClass(NoOpInvokable.class);
    final JobVertex targetVertex = new JobVertex("target");
    targetVertex.setParallelism(parallelism);
    targetVertex.setInvokableClass(NoOpInvokable.class);
    targetVertex.connectNewDataSetAsInput(sourceVertex, DistributionPattern.ALL_TO_ALL, ResultPartitionType.PIPELINED);
    final JobID jobId = new JobID();
    final JobGraph jobGraph = new JobGraph(jobId, "test", sourceVertex, targetVertex);
    // set up some available slots and some slot owner that accepts released slots back
    final List<SimpleSlot> returnedSlots = new ArrayList<>();
    final SlotOwner recycler = new SlotOwner() {

        @Override
        public boolean returnAllocatedSlot(Slot slot) {
            returnedSlots.add((SimpleSlot) slot);
            return true;
        }
    };
    final TaskManagerGateway taskManager = mock(TaskManagerGateway.class);
    final List<SimpleSlot> availableSlots = new ArrayList<>(Arrays.asList(createSlot(taskManager, jobId, recycler), createSlot(taskManager, jobId, recycler), createSlot(taskManager, jobId, recycler), createSlot(taskManager, jobId, recycler), createSlot(taskManager, jobId, recycler)));
    // slot provider that hand out parallelism / 3 slots, then throws an exception
    final SlotProvider slotProvider = mock(SlotProvider.class);
    when(slotProvider.allocateSlot(any(ScheduledUnit.class), anyBoolean())).then(new Answer<Future<SimpleSlot>>() {

        @Override
        public Future<SimpleSlot> answer(InvocationOnMock invocation) {
            if (availableSlots.isEmpty()) {
                throw new TestRuntimeException();
            } else {
                return FlinkCompletableFuture.completed(availableSlots.remove(0));
            }
        }
    });
    final ExecutionGraph eg = createExecutionGraph(jobGraph, slotProvider);
    // acquire resources and check that all are back after the failure
    final int numSlotsToExpectBack = availableSlots.size();
    try {
        eg.setScheduleMode(ScheduleMode.EAGER);
        eg.scheduleForExecution();
        fail("should have failed with an exception");
    } catch (TestRuntimeException e) {
    // expected
    }
    assertEquals(numSlotsToExpectBack, returnedSlots.size());
}