masteryhx commented on a change in pull request #18224: URL: https://github.com/apache/flink/pull/18224#discussion_r807112150
########## File path: flink-tests/src/test/java/org/apache/flink/test/checkpointing/ChangelogPeriodicMaterializationITCase.java ########## @@ -0,0 +1,190 @@ +/* + * 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.restartstrategy.RestartStrategies; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.configuration.StateChangelogOptions; +import org.apache.flink.runtime.state.AbstractStateBackend; +import org.apache.flink.runtime.state.KeyedStateHandle; +import org.apache.flink.runtime.state.SnapshotResult; +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; +import org.apache.flink.util.function.FutureTaskWithException; + +import org.junit.Before; +import org.junit.Test; + +import java.time.Duration; +import java.util.concurrent.Future; +import java.util.concurrent.RunnableFuture; +import java.util.concurrent.atomic.AtomicBoolean; + +/** + * This verifies that checkpointing works correctly for Changelog state backend with materialized + * state / non-materialized state. + */ +public class ChangelogPeriodicMaterializationITCase + extends ChangelogPeriodicMaterializationTestBase { + + private static final AtomicBoolean triggerDelegatedSnapshot = new AtomicBoolean(); + + public ChangelogPeriodicMaterializationITCase(AbstractStateBackend delegatedStateBackend) { + super(delegatedStateBackend); + } + + @Before + public void setup() throws Exception { + super.setup(); + triggerDelegatedSnapshot.set(false); + } + + /** Recovery from checkpoint only containing non-materialized state. */ + @Test + public void testNonMaterialization() throws Exception { + StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); + env.enableCheckpointing(10) + .enableChangelogStateBackend(true) + .getCheckpointConfig() + .setCheckpointStorage(TEMPORARY_FOLDER.newFolder().toURI()); + env.setStateBackend(new DelegatedStateBackendWrapper(delegatedStateBackend, t -> t)) + .setRestartStrategy(RestartStrategies.fixedDelayRestart(1, 0)); + env.configure( + new Configuration() + .set( + StateChangelogOptions.PERIODIC_MATERIALIZATION_INTERVAL, + Duration.ofMinutes(3))); + waitAndAssert( + env, + buildStreamGraph( + env, + new ControlledSource() { + @Override + protected void beforeElement() throws Exception { + if (getRuntimeContext().getAttemptNumber() == 0 + && currentIndex == TOTAL_ELEMENTS / 2) { + waitWhile(() -> completedCheckpointNum.get() <= 0); + throwArtificialFailure(); + } + } + })); + } + + /** Recovery from checkpoint containing non-materialized state and materialized state. */ + @Test + public void testMaterialization() throws Exception { + StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); + env.enableCheckpointing(10) + .enableChangelogStateBackend(true) + .getCheckpointConfig() + .setCheckpointStorage(TEMPORARY_FOLDER.newFolder().toURI()); + + SerializableFunctionWithException<RunnableFuture<SnapshotResult<KeyedStateHandle>>> + snapshotResultConsumer = + snapshotResultFuture -> { + PENDING_MATERIALIZATION.add(snapshotResultFuture); + return snapshotResultFuture; + }; + env.setStateBackend( + new DelegatedStateBackendWrapper( + delegatedStateBackend, snapshotResultConsumer)) + .setRestartStrategy(RestartStrategies.fixedDelayRestart(2, 0)); + env.configure( + new Configuration() + .set( + StateChangelogOptions.PERIODIC_MATERIALIZATION_INTERVAL, + Duration.ofMillis(10))); + waitAndAssert( + env, + buildStreamGraph( + env, + new ControlledSource() { + @Override + protected void beforeElement() throws Exception { + if (getRuntimeContext().getAttemptNumber() == 0 + && currentIndex == TOTAL_ELEMENTS / 4) { + waitWhile( + () -> + completedCheckpointNum.get() <= 0 + || PENDING_MATERIALIZATION.stream() + .noneMatch(Future::isDone)); + PENDING_MATERIALIZATION.clear(); + throwArtificialFailure(); + } else if (getRuntimeContext().getAttemptNumber() == 1 + && currentIndex == TOTAL_ELEMENTS / 2) { Review comment: I just want to fail it twice: consume some elements -> fail -> recovery -> continue to consume some elements -> fail -> recovery -- This is an automated message from the Apache Git Service. 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