AHeise commented on a change in pull request #15631: URL: https://github.com/apache/flink/pull/15631#discussion_r622209962
########## File path: flink-tests/src/test/java/org/apache/flink/test/checkpointing/UnalignedCheckpointStressITCase.java ########## @@ -0,0 +1,553 @@ +/* + * 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.test.checkpointing; + +import org.apache.flink.api.common.functions.AbstractRichFunction; +import org.apache.flink.api.common.functions.MapFunction; +import org.apache.flink.api.common.restartstrategy.RestartStrategies; +import org.apache.flink.api.common.state.CheckpointListener; +import org.apache.flink.api.common.state.ListState; +import org.apache.flink.api.common.state.ListStateDescriptor; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.configuration.RestOptions; +import org.apache.flink.runtime.jobgraph.JobGraph; +import org.apache.flink.runtime.jobgraph.SavepointRestoreSettings; +import org.apache.flink.runtime.operators.testutils.ExpectedTestException; +import org.apache.flink.runtime.state.FunctionInitializationContext; +import org.apache.flink.runtime.state.FunctionSnapshotContext; +import org.apache.flink.runtime.testutils.MiniClusterResourceConfiguration; +import org.apache.flink.streaming.api.checkpoint.CheckpointedFunction; +import org.apache.flink.streaming.api.datastream.DataStream; +import org.apache.flink.streaming.api.datastream.DataStreamSource; +import org.apache.flink.streaming.api.datastream.DataStreamUtils; +import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator; +import org.apache.flink.streaming.api.environment.CheckpointConfig.ExternalizedCheckpointCleanup; +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; +import org.apache.flink.streaming.api.functions.co.KeyedCoProcessFunction; +import org.apache.flink.streaming.api.functions.source.ParallelSourceFunction; +import org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction; +import org.apache.flink.streaming.api.graph.StreamGraph; +import org.apache.flink.streaming.api.windowing.assigners.TumblingProcessingTimeWindows; +import org.apache.flink.streaming.api.windowing.time.Time; +import org.apache.flink.streaming.api.windowing.windows.TimeWindow; +import org.apache.flink.test.util.MiniClusterWithClientResource; +import org.apache.flink.util.Collector; +import org.apache.flink.util.ExceptionUtils; +import org.apache.flink.util.FileUtils; +import org.apache.flink.util.TestLogger; + +import org.junit.After; +import org.junit.Before; +import org.junit.ClassRule; +import org.junit.Test; +import org.junit.rules.TemporaryFolder; + +import javax.annotation.Nullable; + +import java.io.File; +import java.io.IOException; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.Comparator; +import java.util.List; +import java.util.Optional; +import java.util.concurrent.ThreadLocalRandom; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +import static org.apache.flink.configuration.CheckpointingOptions.CHECKPOINTS_DIRECTORY; +import static org.apache.flink.configuration.CheckpointingOptions.MAX_RETAINED_CHECKPOINTS; +import static org.apache.flink.shaded.guava18.com.google.common.collect.Iterables.getOnlyElement; +import static org.apache.flink.test.util.TestUtils.submitJobAndWaitForResult; +import static org.apache.flink.util.Preconditions.checkState; + +/** + * A stress test that runs for a pre-defined amount of time, verifying data correctness and every + * couple of checkpoints is triggering fail over to stress test unaligned checkpoints. + */ +@SuppressWarnings("serial") +public class UnalignedCheckpointStressITCase extends TestLogger { + + protected static final int CHECKPOINT_INTERVAL = 20; + protected static final int MINIMUM_COMPLETED_CHECKPOINTS_BETWEEN_FAILURES = 2; + protected static final int MAXIMUM_COMPLETED_CHECKPOINTS_BETWEEN_FAILURES = 10; + protected static final long TEST_DURATION = Time.minutes(1).toMilliseconds(); + protected static final int NUM_TASK_MANAGERS = 3; + protected static final int NUM_TASK_SLOTS = 2; + protected static final int PARALLELISM = NUM_TASK_MANAGERS * NUM_TASK_SLOTS; + protected static final int BUFFER_SIZE = 1024 * 4; + protected static final int BUFFER_TIME = 4; + protected static final int NORMAL_RECORD_SLEEP = 1; + protected static final int SMALL_RECORD_SIZE = + (BUFFER_SIZE / BUFFER_TIME) * NORMAL_RECORD_SLEEP; + + @ClassRule public static TemporaryFolder temporaryFolder = new TemporaryFolder(); + + private static MiniClusterWithClientResource cluster; + + @Before + public void setup() throws Exception { + Configuration configuration = new Configuration(); + File folder = temporaryFolder.getRoot(); + configuration.set(CHECKPOINTS_DIRECTORY, folder.toURI().toString()); + configuration.set(MAX_RETAINED_CHECKPOINTS, 1); + + cluster = + new MiniClusterWithClientResource( + new MiniClusterResourceConfiguration.Builder() + .setConfiguration(configuration) + .setNumberTaskManagers(NUM_TASK_MANAGERS) + .setNumberSlotsPerTaskManager(NUM_TASK_SLOTS) + .build()); + cluster.before(); + + FileUtils.cleanDirectory(temporaryFolder.getRoot()); + } + + @After + public void shutDownExistingCluster() { Review comment: https://www.merriam-webster.com/dictionary/shutdown -- This is an automated message from the Apache Git Service. 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