tillrohrmann commented on a change in pull request #8988: [FLINK-12736][coordination] Release TaskExecutor in SlotManager if no slot allocations after partition check URL: https://github.com/apache/flink/pull/8988#discussion_r301137799
########## File path: flink-runtime/src/test/java/org/apache/flink/runtime/resourcemanager/slotmanager/TaskManagerReleaseInSlotManagerTest.java ########## @@ -0,0 +1,165 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.flink.runtime.resourcemanager.slotmanager; + +import org.apache.flink.api.common.JobID; +import org.apache.flink.api.common.time.Time; +import org.apache.flink.runtime.clusterframework.types.AllocationID; +import org.apache.flink.runtime.clusterframework.types.ResourceID; +import org.apache.flink.runtime.clusterframework.types.ResourceProfile; +import org.apache.flink.runtime.clusterframework.types.SlotID; +import org.apache.flink.runtime.concurrent.ManuallyTriggeredScheduledExecutor; +import org.apache.flink.runtime.instance.InstanceID; +import org.apache.flink.runtime.resourcemanager.ResourceManagerId; +import org.apache.flink.runtime.resourcemanager.SlotRequest; +import org.apache.flink.runtime.resourcemanager.registration.TaskExecutorConnection; +import org.apache.flink.runtime.taskexecutor.SlotReport; +import org.apache.flink.runtime.taskexecutor.SlotStatus; +import org.apache.flink.runtime.taskexecutor.TaskExecutorGateway; +import org.apache.flink.runtime.taskexecutor.TestingTaskExecutorGatewayBuilder; +import org.apache.flink.runtime.testingUtils.TestingUtils; +import org.apache.flink.util.TestLogger; +import org.junit.Before; +import org.junit.Test; + +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.Executor; +import java.util.concurrent.atomic.AtomicReference; + +import static org.hamcrest.Matchers.equalTo; +import static org.hamcrest.Matchers.is; +import static org.junit.Assert.assertThat; + +/** + * Test suite for idle task managers release in slot manager. + */ +public class TaskManagerReleaseInSlotManagerTest extends TestLogger { + private static final ResourceID resourceID = ResourceID.generate(); + private static final ResourceManagerId resourceManagerId = ResourceManagerId.generate(); + private static final SlotID slotId = new SlotID(resourceID, 0); + private static final ResourceProfile resourceProfile = new ResourceProfile(1.0, 1); + private static final SlotStatus slotStatus = new SlotStatus(slotId, resourceProfile); + private static final SlotReport slotReport = new SlotReport(slotStatus); + + private final AtomicReference<CompletableFuture<Boolean>> canBeReleased = new AtomicReference<>(); + private final TaskExecutorGateway taskExecutorGateway = new TestingTaskExecutorGatewayBuilder() + .setCanBeReleasedSupplier(canBeReleased::get) + .createTestingTaskExecutorGateway(); + private final TaskExecutorConnection taskManagerConnection = + new TaskExecutorConnection(resourceID, taskExecutorGateway); + + private CompletableFuture<InstanceID> releaseFuture; + private ResourceActions resourceManagerActions; + private ManuallyTriggeredScheduledExecutor mainThreadExecutor; + + @Before + public void setup() { + releaseFuture = new CompletableFuture<>(); + resourceManagerActions = new TestingResourceActionsBuilder() + .setReleaseResourceConsumer((instanceID, e) -> releaseFuture.complete(instanceID)) + .build(); + mainThreadExecutor = new ManuallyTriggeredScheduledExecutor(); + } + + /** + * Tests that idle task managers time out after the configured timeout. A timed out task manager + * will be removed from the slot manager and the resource manager will be notified about the + * timeout, if it can be released. + */ + @Test + public void testTaskManagerTimeout() throws Exception { + Executor executor = TestingUtils.defaultExecutor(); + canBeReleased.set(new CompletableFuture<>()); + canBeReleased.get().complete(true); + try (SlotManager slotManager = SlotManagerBuilder + .newBuilder() + .setTaskManagerTimeout(Time.milliseconds(10L)) + .build()) { + + slotManager.start(resourceManagerId, executor, resourceManagerActions); + executor.execute(() -> slotManager.registerTaskManager(taskManagerConnection, slotReport)); + assertThat(releaseFuture.get(), is(equalTo(taskManagerConnection.getInstanceID()))); + } + } + + /** + * Tests that idle but not releasable task managers will not be released even if timed out before it can be. + */ + @Test + public void testTaskManagerIsNotReleasedBeforeItCanBe() throws Exception { + try (SlotManager slotManager = createAndStartSlotManagerWithTM()) { + testTaskManagerIsNotReleasedBeforeItCanBe(slotManager); + testTaskManagerReleasedAfterItCanBe(slotManager); + } + } + + /** + * Tests that idle task managers will not be released after "can be" check in case of concurrent resource allocations. + */ + @Test + public void testTaskManagerIsNotReleasedInCaseOfConcurrentAllocation() throws Exception { + try (SlotManager slotManager = createAndStartSlotManagerWithTM()) { + resetCanBeReleasedFutureAndTriggerTimeoutCheck(slotManager); + + // Allocate and free slot between triggering TM.canBeReleased request and receiving response. + // There can be potentially newly unreleased partitions, therefore TM can not be released yet. + AllocationID allocationID = new AllocationID(); + slotManager.registerSlotRequest(new SlotRequest(new JobID(), allocationID, resourceProfile, "foobar")); + mainThreadExecutor.triggerAll(); + slotManager.freeSlot(slotId, allocationID); + + setCanBeReleasedAndTrggerCheckTmReleased(true, false); Review comment: typo in method name ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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