GJL commented on a change in pull request #9832: [FLINK-11843] Bind lifespan of Dispatcher to leader session URL: https://github.com/apache/flink/pull/9832#discussion_r335503334
########## File path: flink-runtime/src/test/java/org/apache/flink/runtime/dispatcher/runner/SessionDispatcherLeaderProcessTest.java ########## @@ -0,0 +1,517 @@ +/* + * 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.dispatcher.runner; + +import org.apache.flink.api.common.JobID; +import org.apache.flink.core.testutils.OneShotLatch; +import org.apache.flink.runtime.client.DuplicateJobSubmissionException; +import org.apache.flink.runtime.client.JobSubmissionException; +import org.apache.flink.runtime.concurrent.FutureUtils; +import org.apache.flink.runtime.jobgraph.JobGraph; +import org.apache.flink.runtime.jobmanager.JobGraphStore; +import org.apache.flink.runtime.messages.Acknowledge; +import org.apache.flink.runtime.testutils.TestingJobGraphStore; +import org.apache.flink.runtime.util.TestingFatalErrorHandler; +import org.apache.flink.runtime.webmonitor.TestingDispatcherGateway; +import org.apache.flink.util.ExceptionUtils; +import org.apache.flink.util.ExecutorUtils; +import org.apache.flink.util.FlinkException; +import org.apache.flink.util.TestLogger; +import org.apache.flink.util.function.ThrowingConsumer; +import org.apache.flink.util.function.TriFunctionWithException; + +import org.hamcrest.core.Is; +import org.junit.After; +import org.junit.AfterClass; +import org.junit.Assert; +import org.junit.Before; +import org.junit.BeforeClass; +import org.junit.Test; + +import java.util.Collection; +import java.util.Collections; +import java.util.Map; +import java.util.UUID; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.TimeoutException; + +import static org.hamcrest.CoreMatchers.is; +import static org.hamcrest.MatcherAssert.assertThat; +import static org.hamcrest.Matchers.containsInAnyOrder; +import static org.hamcrest.Matchers.hasSize; +import static org.junit.Assert.assertTrue; +import static org.junit.Assert.fail; + +/** + * Tests for the {@link SessionDispatcherLeaderProcess}. + */ +public class SessionDispatcherLeaderProcessTest extends TestLogger { + + private static final JobGraph JOB_GRAPH = new JobGraph("JobGraph"); + + private static ExecutorService ioExecutor; + + private final UUID leaderSessionId = UUID.randomUUID(); + + private TestingFatalErrorHandler fatalErrorHandler; + + private JobGraphStore jobGraphStore; + + private TestingDispatcherServiceFactory dispatcherServiceFactory; + + @BeforeClass + public static void setupClass() { + ioExecutor = Executors.newSingleThreadExecutor(); + } + + @Before + public void setup() { + fatalErrorHandler = new TestingFatalErrorHandler(); + jobGraphStore = TestingJobGraphStore.newBuilder().build(); + dispatcherServiceFactory = TestingDispatcherServiceFactory.newBuilder().build(); + } + + @After + public void teardown() throws Exception { + if (fatalErrorHandler != null) { + fatalErrorHandler.rethrowError(); + fatalErrorHandler = null; + } + } + + @AfterClass + public static void teardownClass() { + if (ioExecutor != null) { + ExecutorUtils.gracefulShutdown(5L, TimeUnit.SECONDS, ioExecutor); + } + } + + @Test + public void start_afterClose_doesNotHaveAnEffect() throws Exception { + final SessionDispatcherLeaderProcess dispatcherLeaderProcess = createDispatcherLeaderProcess(); + + dispatcherLeaderProcess.close(); + dispatcherLeaderProcess.start(); + + assertThat(dispatcherLeaderProcess.getState(), is(SessionDispatcherLeaderProcess.State.STOPPED)); + } + + @Test + public void start_triggersJobGraphRecoveryAndDispatcherServiceCreation() throws Exception { + jobGraphStore = TestingJobGraphStore.newBuilder() + .setInitialJobGraphs(Collections.singleton(JOB_GRAPH)) + .build(); + + final CompletableFuture<Collection<JobGraph>> recoveredJobGraphsFuture = new CompletableFuture<>(); + dispatcherServiceFactory = TestingDispatcherServiceFactory.newBuilder() + .setCreateFunction( + (fencingToken, recoveredJobGraphs, jobGraphStore) -> { + recoveredJobGraphsFuture.complete(recoveredJobGraphs); + return TestingDispatcherService.newBuilder().build(); + } + ) + .build(); + + try (final SessionDispatcherLeaderProcess dispatcherLeaderProcess = createDispatcherLeaderProcess()) { + dispatcherLeaderProcess.start(); + assertThat(dispatcherLeaderProcess.getState(), is(SessionDispatcherLeaderProcess.State.RUNNING)); + + final Collection<JobGraph> recoveredJobGraphs = recoveredJobGraphsFuture.get(); + + assertThat(recoveredJobGraphs, hasSize(1)); Review comment: `containsInAnyOrder` already checks the size ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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