dawidwys commented on a change in pull request #17645: URL: https://github.com/apache/flink/pull/17645#discussion_r743638339
########## File path: flink-tests/src/test/java/org/apache/flink/test/checkpointing/UnalignedCheckpointFailureHandlingITCase.java ########## @@ -0,0 +1,311 @@ +/* + * 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.JobID; +import org.apache.flink.api.common.eventtime.WatermarkStrategy; +import org.apache.flink.api.connector.source.lib.NumberSequenceSource; +import org.apache.flink.core.execution.JobClient; +import org.apache.flink.core.fs.FileSystem; +import org.apache.flink.runtime.minicluster.MiniCluster; +import org.apache.flink.runtime.state.CheckpointStorage; +import org.apache.flink.runtime.state.CheckpointStorageAccess; +import org.apache.flink.runtime.state.CheckpointStorageLocation; +import org.apache.flink.runtime.state.CheckpointStorageLocationReference; +import org.apache.flink.runtime.state.CheckpointStreamFactory; +import org.apache.flink.runtime.state.CompletedCheckpointStorageLocation; +import org.apache.flink.runtime.state.StreamStateHandle; +import org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory.FsCheckpointStateOutputStream; +import org.apache.flink.runtime.state.storage.JobManagerCheckpointStorage; +import org.apache.flink.runtime.state.ttl.mock.MockStateBackend; +import org.apache.flink.runtime.testutils.MiniClusterResourceConfiguration; +import org.apache.flink.streaming.api.CheckpointingMode; +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; +import org.apache.flink.streaming.api.functions.sink.DiscardingSink; +import org.apache.flink.test.util.MiniClusterWithClientResource; +import org.apache.flink.testutils.junit.SharedObjects; +import org.apache.flink.testutils.junit.SharedReference; +import org.apache.flink.util.SerializedThrowable; + +import org.junit.Rule; +import org.junit.Test; +import org.junit.rules.TemporaryFolder; + +import javax.annotation.Nullable; + +import java.io.File; +import java.io.IOException; +import java.time.Duration; +import java.util.Optional; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.atomic.AtomicBoolean; + +import static java.util.Collections.singletonList; +import static org.apache.flink.api.common.JobStatus.RUNNING; +import static org.apache.flink.api.common.time.Deadline.fromNow; +import static org.apache.flink.core.fs.Path.fromLocalFile; +import static org.apache.flink.runtime.testutils.CommonTestUtils.waitForAllTaskRunning; +import static org.apache.flink.runtime.testutils.CommonTestUtils.waitForJobStatus; +import static org.apache.flink.util.ExceptionUtils.findThrowable; +import static org.apache.flink.util.ExceptionUtils.rethrow; + +/** + * Tests failure handling in channel state persistence. + * + * @see <a href="https://issues.apache.org/jira/browse/FLINK-24667";>FLINK-24667</a> + */ +public class UnalignedCheckpointFailureHandlingITCase { + + private static final int PARALLELISM = 2; + + @Rule public final TemporaryFolder temporaryFolder = new TemporaryFolder(); + + @Rule public final SharedObjects sharedObjects = SharedObjects.create(); + + @Rule + public final MiniClusterWithClientResource miniClusterResource = + new MiniClusterWithClientResource( + new MiniClusterResourceConfiguration.Builder() + .setNumberTaskManagers(PARALLELISM) + .setNumberSlotsPerTaskManager(1) + .build()); + + @Test + public void testCheckpointSuccessAfterFailure() throws Exception { + final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); + TestCheckpointStorage storage = + new TestCheckpointStorage( + new JobManagerCheckpointStorage(), sharedObjects, temporaryFolder); + + configure(env, storage); + buildGraph(env); + + JobClient jobClient = env.executeAsync(); + JobID jobID = jobClient.getJobID(); + MiniCluster miniCluster = miniClusterResource.getMiniCluster(); + + waitForJobStatus(jobClient, singletonList(RUNNING), fromNow(Duration.ofSeconds(30))); + waitForAllTaskRunning(miniCluster, jobID, false); + + triggerFailingCheckpoint(jobID, TestException.class, miniCluster); + + miniCluster.triggerCheckpoint(jobID).get(); + } + + private void configure(StreamExecutionEnvironment env, TestCheckpointStorage storage) { + // enable checkpointing but only via API + env.enableCheckpointing(Long.MAX_VALUE, CheckpointingMode.EXACTLY_ONCE); + + env.getCheckpointConfig().setCheckpointStorage(storage); + + // use non-snapshotting backend to test channel state persistence integration with + // checkpoint storage + env.setStateBackend(new MockStateBackend(true)); + + env.getCheckpointConfig().enableUnalignedCheckpoints(); + + env.getCheckpointConfig().setAlignedCheckpointTimeout(Duration.ZERO); // speed-up + + // failures are emitted by the storage + env.getCheckpointConfig().setTolerableCheckpointFailureNumber(Integer.MAX_VALUE); + + // DoP > 1 is required for some barriers to lag + env.setParallelism(PARALLELISM); + + // no chaining to have input channels (doesn't matter local or remote) + env.disableOperatorChaining(); + } + + private void buildGraph(StreamExecutionEnvironment env) { + // with zero alignment timeout some steps here are not strictly necessary currently, but + // this may change in the future + env.fromSource( + new NumberSequenceSource(0, Long.MAX_VALUE), + WatermarkStrategy.noWatermarks(), + "num-source") + // source is not parallel, so keyBy to send to all down-streams + .keyBy(value -> value) + // exert back-pressure + .map( + value -> { + Thread.sleep(0, 100); Review comment: It does not really matter for this case, but I don't think it is platform-specific. (Unless by platform you mean jvm implementation). It is not a native method. It does have an implementation that always converts the nanos part into milliseconds. It is true that the actual time how long a thread sleeps is platform-specific and depends on system timers and interruptions. From a brief investigation I did some time ago on Linux systems the minimal time of an "actual" time a thread can sleep is ~1ms whereas on windows ~10-15ms. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
