dalelane commented on code in PR #29379: URL: https://github.com/apache/flink/pull/29379#discussion_r4284424872
########## flink-container/src/test/java/org/apache/flink/container/entrypoint/ApplicationModeMiniClusterTest.java: ########## @@ -0,0 +1,258 @@ +/* + * 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.container.entrypoint; + +import org.apache.flink.client.program.PackagedProgram; +import org.apache.flink.client.program.ProgramInvocationException; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.core.testutils.OneShotLatch; +import org.apache.flink.runtime.blob.BlobServer; +import org.apache.flink.runtime.entrypoint.component.DispatcherResourceManagerComponent; +import org.apache.flink.runtime.heartbeat.HeartbeatServices; +import org.apache.flink.runtime.highavailability.HighAvailabilityServices; +import org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedHaServices; +import org.apache.flink.runtime.metrics.MetricRegistry; +import org.apache.flink.runtime.minicluster.MiniClusterConfiguration; +import org.apache.flink.runtime.rpc.FatalErrorHandler; +import org.apache.flink.runtime.security.token.DelegationTokenManager; +import org.apache.flink.runtime.webmonitor.retriever.MetricQueryServiceRetriever; +import org.apache.flink.testutils.logging.LoggerAuditingExtension; + +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.extension.RegisterExtension; +import org.slf4j.event.Level; + +import java.time.Duration; +import java.util.Collection; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.CompletionException; +import java.util.concurrent.Executor; + +import static org.assertj.core.api.Assertions.assertThat; +import static org.assertj.core.api.Assertions.assertThatThrownBy; + +/** Tests for {@link ApplicationModeMiniCluster}. */ +class ApplicationModeMiniClusterTest { + + @RegisterExtension + private final LoggerAuditingExtension loggerAuditingExtension = + new LoggerAuditingExtension(ApplicationModeMiniCluster.class, Level.WARN); + + private MiniClusterConfiguration miniClusterConfiguration; + private PackagedProgram program; + + @BeforeEach + void setUp() throws ProgramInvocationException { + miniClusterConfiguration = new MiniClusterConfiguration.Builder().build(); + program = + PackagedProgram.newBuilder() + .setEntryPointClassName(NoOpProgram.class.getName()) + .build(); + } + + @Test + void rejectsNullProgram() { + assertThatThrownBy(() -> new ApplicationModeMiniCluster(miniClusterConfiguration, null)) + .isInstanceOf(NullPointerException.class); + } + + @Test + void futuresIncompleteOnConstruction() { + final ApplicationModeMiniCluster miniCluster = + new ApplicationModeMiniCluster(miniClusterConfiguration, program); + + assertThat(miniCluster.getApplicationShutDownFuture()).isNotDone(); + assertThat(miniCluster.getCloseRequestedFuture()).isNotDone(); + } + + @Test + void closeBeforeStartRecordsCloseRequestOnly() { + final ApplicationModeMiniCluster miniCluster = + new ApplicationModeMiniCluster(miniClusterConfiguration, program); + + final CompletableFuture<Void> closeFuture = miniCluster.closeAsync(); + + assertThat(closeFuture).isCompleted(); + assertThat(miniCluster.getCloseRequestedFuture()).isCompleted(); + assertThat(miniCluster.getApplicationShutDownFuture()) + .as("closing the cluster must not look like the application finishing") + .isNotDone(); + } + + @Test + void dispatcherNotShutDownBeforeStart() { + final ApplicationModeMiniCluster miniCluster = + new ApplicationModeMiniCluster(miniClusterConfiguration, program); + + assertThat(miniCluster.isDispatcherShutDown()) + .as("closing during startup must not clean up the HA data") + .isFalse(); + } + + @Test + void closeIsIdempotent() { + final ApplicationModeMiniCluster miniCluster = + new ApplicationModeMiniCluster(miniClusterConfiguration, program); + + assertThat(miniCluster.closeAsync()).isCompleted(); + assertThat(miniCluster.closeAsync()).isCompleted(); + assertThat(miniCluster.getCloseRequestedFuture()).isCompleted(); + assertThat(miniCluster.getApplicationShutDownFuture()).isNotDone(); + } + + @Test + void taskManagerFatalErrorLoggedAsWarningAfterCloseRequested() { + final ApplicationModeMiniCluster miniCluster = + new ApplicationModeMiniCluster(miniClusterConfiguration, program); + miniCluster.closeAsync(); + + miniCluster + .createTaskManagerFatalErrorHandler(0) + .onFatalError(new RuntimeException("error during shutdown")); + + assertThat(loggerAuditingExtension.getMessages()) + .containsExactly("TaskManager #0 failed while shutting down."); + } + + @Test + void failedStartAfterDispatcherCreationDoesNotDeadlock() { + final ApplicationModeMiniCluster miniCluster = + new ApplicationModeMiniCluster(miniClusterConfiguration, program) { + @Override + protected Collection<? extends DispatcherResourceManagerComponent> + createDispatcherResourceManagerComponents( + Configuration configuration, + RpcServiceFactory rpcServiceFactory, + BlobServer blobServer, + HeartbeatServices heartbeatServices, + DelegationTokenManager delegationTokenManager, + MetricRegistry metricRegistry, + MetricQueryServiceRetriever metricQueryServiceRetriever, + FatalErrorHandler fatalErrorHandler) + throws Exception { + super.createDispatcherResourceManagerComponents( + configuration, + rpcServiceFactory, + blobServer, + heartbeatServices, + delegationTokenManager, + metricRegistry, + metricQueryServiceRetriever, + fatalErrorHandler); + throw new Exception("startup failure"); + } + }; + + assertThatThrownBy(miniCluster::start).hasMessage("startup failure"); Review Comment: making the test more complex to workaround the services leak doesn't feel like the right fix - raised https://issues.apache.org/jira/browse/FLINK-41005 to fix the problem on the MiniCluster side -- This is an automated message from the Apache Git Service. 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