GJL commented on a change in pull request #8851: [FLINK-12876] [runtime] Add an adapter of region failover NG for legacy scheduler URL: https://github.com/apache/flink/pull/8851#discussion_r297174451
########## File path: flink-runtime/src/test/java/org/apache/flink/runtime/executiongraph/AdaptedRestartPipelinedRegionStrategyNGConcurrentFailoverTest.java ########## @@ -0,0 +1,413 @@ +/* + * 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.executiongraph; + +import org.apache.flink.api.common.JobID; +import org.apache.flink.api.common.time.Time; +import org.apache.flink.runtime.blob.VoidBlobWriter; +import org.apache.flink.runtime.concurrent.FutureUtils; +import org.apache.flink.runtime.execution.ExecutionState; +import org.apache.flink.runtime.executiongraph.failover.AdaptedRestartPipelinedRegionStrategyNG; +import org.apache.flink.runtime.executiongraph.failover.FailoverStrategy.Factory; +import org.apache.flink.runtime.executiongraph.restart.RestartStrategy; +import org.apache.flink.runtime.executiongraph.utils.SimpleSlotProvider; +import org.apache.flink.runtime.io.network.partition.ResultPartitionType; +import org.apache.flink.runtime.jobgraph.DistributionPattern; +import org.apache.flink.runtime.jobgraph.JobGraph; +import org.apache.flink.runtime.jobgraph.JobStatus; +import org.apache.flink.runtime.jobgraph.JobVertex; +import org.apache.flink.runtime.jobmaster.slotpool.SlotProvider; +import org.apache.flink.runtime.scheduler.strategy.ExecutionVertexID; +import org.apache.flink.runtime.testingUtils.TestingUtils; +import org.apache.flink.runtime.testtasks.NoOpInvokable; +import org.apache.flink.util.TestLogger; + +import org.junit.ClassRule; +import org.junit.Test; + +import javax.annotation.Nonnull; + +import java.util.ArrayList; +import java.util.Iterator; +import java.util.Set; +import java.util.concurrent.CompletableFuture; + +import static org.junit.Assert.assertEquals; + +/** + * Tests for {@link AdaptedRestartPipelinedRegionStrategyNG} failover handling when concurrent failovers happen. + * There can be local+local and local+global concurrent failovers. + */ +public class AdaptedRestartPipelinedRegionStrategyNGConcurrentFailoverTest extends TestLogger { + + public final int DEFAULT_PARALLELISM = 2; + + @ClassRule + public static final TestingComponentMainThreadExecutor.Resource EXECUTOR_RESOURCE = + new TestingComponentMainThreadExecutor.Resource(); + + private final TestingComponentMainThreadExecutor testMainThreadUtil = + EXECUTOR_RESOURCE.getComponentMainThreadTestExecutor(); + + /** + * Tests that 2 concurrent region failovers can lead to a properly vertex state. + * <pre> + * (v11) -+-> (v21) + * x + * (v12) -+-> (v22) + * + * ^ + * | + * (blocking) + * </pre> + */ + @Test + public void testConcurrentRegionFailovers() throws Exception { + + // the logic in this test is as follows: + // - start a job + // - cause {ev11} failure and delay the local recovery action via the manual executor + // - cause {ev12} failure and delay the local recovery action via the manual executor + // - resume local recovery actions + // - validate that each task is restarted only once + + final JobID jid = new JobID(); + final SimpleSlotProvider slotProvider = new SimpleSlotProvider(jid, DEFAULT_PARALLELISM); + final TestRestartStrategy restartStrategy = TestRestartStrategy.manuallyTriggered(); + + final ExecutionGraph eg = createExecutionGraph( + jid, + TestAdaptedRestartPipelinedRegionStrategyNG::new, + restartStrategy, + slotProvider); + + final TestAdaptedRestartPipelinedRegionStrategyNG failoverStrategy = + (TestAdaptedRestartPipelinedRegionStrategyNG) eg.getFailoverStrategy(); + failoverStrategy.setBlockerFuture(new CompletableFuture<>()); + + final Iterator<ExecutionVertex> vertexIterator = eg.getAllExecutionVertices().iterator(); + final ExecutionVertex ev11 = vertexIterator.next(); + final ExecutionVertex ev12 = vertexIterator.next(); + final ExecutionVertex ev21 = vertexIterator.next(); + final ExecutionVertex ev22 = vertexIterator.next(); + + // start job scheduling + testMainThreadUtil.execute(eg::scheduleForExecution); + assertEquals(JobStatus.RUNNING, eg.getState()); + assertEquals(1, eg.getGlobalModVersion()); + assertEquals(ExecutionState.DEPLOYING, ev11.getExecutionState()); + assertEquals(ExecutionState.DEPLOYING, ev12.getExecutionState()); + assertEquals(ExecutionState.CREATED, ev21.getExecutionState()); + assertEquals(ExecutionState.CREATED, ev22.getExecutionState()); + + // fail ev11 to trigger region failover of {ev11}, {ev21}, {ev22} + testMainThreadUtil.execute(() -> ev11.getCurrentExecutionAttempt().fail(new Exception("task failure 1"))); + assertEquals(ExecutionState.FAILED, ev11.getExecutionState()); + assertEquals(ExecutionState.DEPLOYING, ev12.getExecutionState()); + assertEquals(ExecutionState.CANCELED, ev21.getExecutionState()); + assertEquals(ExecutionState.CANCELED, ev22.getExecutionState()); + + // fail ev12 to trigger region failover of {ev12}, {ev21}, {ev22} + testMainThreadUtil.execute(() -> ev12.getCurrentExecutionAttempt().fail(new Exception("task failure 2"))); + assertEquals(ExecutionState.FAILED, ev11.getExecutionState()); + assertEquals(ExecutionState.FAILED, ev12.getExecutionState()); + assertEquals(ExecutionState.CANCELED, ev21.getExecutionState()); + assertEquals(ExecutionState.CANCELED, ev22.getExecutionState()); + + // complete region failover blocker to trigger region failover recovery + testMainThreadUtil.execute(() -> failoverStrategy.blockerFuture.complete(null)); + + // verify that all tasks are recovered and no task is restarted more than once + assertEquals(ExecutionState.DEPLOYING, ev11.getExecutionState()); + assertEquals(ExecutionState.DEPLOYING, ev12.getExecutionState()); + assertEquals(ExecutionState.CREATED, ev21.getExecutionState()); + assertEquals(ExecutionState.CREATED, ev22.getExecutionState()); + assertEquals(1, ev11.getCurrentExecutionAttempt().getAttemptNumber()); + assertEquals(1, ev12.getCurrentExecutionAttempt().getAttemptNumber()); + assertEquals(1, ev21.getCurrentExecutionAttempt().getAttemptNumber()); + assertEquals(1, ev22.getCurrentExecutionAttempt().getAttemptNumber()); + } + + /** + * Tests that a local failover does not try to trump a global failover. + * <pre> + * (v11) -+-> (v21) + * x + * (v12) -+-> (v22) + * + * ^ + * | + * (blocking) + * </pre> + */ + @Test + public void testRegionFailoverWhenInGlobalFailover() throws Exception { Review comment: Do we need this test? It does not invoke methods on the adapter. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
