zhuzhurk commented on a change in pull request #9663: [WIP][FLINK-12433][runtime] Implement DefaultScheduler stub URL: https://github.com/apache/flink/pull/9663#discussion_r324505819
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/SchedulerBase.java ########## @@ -0,0 +1,727 @@ +/* + * 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.scheduler; + +import org.apache.flink.api.common.JobID; +import org.apache.flink.api.common.restartstrategy.RestartStrategies; +import org.apache.flink.api.common.time.Time; +import org.apache.flink.configuration.CheckpointingOptions; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.core.io.InputSplit; +import org.apache.flink.queryablestate.KvStateID; +import org.apache.flink.runtime.JobException; +import org.apache.flink.runtime.accumulators.AccumulatorSnapshot; +import org.apache.flink.runtime.blob.BlobWriter; +import org.apache.flink.runtime.checkpoint.CheckpointCoordinator; +import org.apache.flink.runtime.checkpoint.CheckpointMetrics; +import org.apache.flink.runtime.checkpoint.CheckpointRecoveryFactory; +import org.apache.flink.runtime.checkpoint.CompletedCheckpoint; +import org.apache.flink.runtime.checkpoint.TaskStateSnapshot; +import org.apache.flink.runtime.client.JobExecutionException; +import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor; +import org.apache.flink.runtime.concurrent.FutureUtils; +import org.apache.flink.runtime.execution.ExecutionState; +import org.apache.flink.runtime.executiongraph.ArchivedExecutionGraph; +import org.apache.flink.runtime.executiongraph.Execution; +import org.apache.flink.runtime.executiongraph.ExecutionAttemptID; +import org.apache.flink.runtime.executiongraph.ExecutionGraph; +import org.apache.flink.runtime.executiongraph.ExecutionGraphBuilder; +import org.apache.flink.runtime.executiongraph.ExecutionGraphException; +import org.apache.flink.runtime.executiongraph.ExecutionJobVertex; +import org.apache.flink.runtime.executiongraph.ExecutionVertex; +import org.apache.flink.runtime.executiongraph.IntermediateResult; +import org.apache.flink.runtime.executiongraph.JobStatusListener; +import org.apache.flink.runtime.executiongraph.TaskFailureListener; +import org.apache.flink.runtime.executiongraph.failover.adapter.DefaultFailoverTopology; +import org.apache.flink.runtime.executiongraph.failover.flip1.FailoverTopology; +import org.apache.flink.runtime.executiongraph.restart.RestartStrategy; +import org.apache.flink.runtime.executiongraph.restart.RestartStrategyFactory; +import org.apache.flink.runtime.executiongraph.restart.RestartStrategyResolving; +import org.apache.flink.runtime.io.network.partition.PartitionTracker; +import org.apache.flink.runtime.io.network.partition.ResultPartitionID; +import org.apache.flink.runtime.jobgraph.IntermediateDataSetID; +import org.apache.flink.runtime.jobgraph.JobGraph; +import org.apache.flink.runtime.jobgraph.JobStatus; +import org.apache.flink.runtime.jobgraph.JobVertexID; +import org.apache.flink.runtime.jobgraph.SavepointRestoreSettings; +import org.apache.flink.runtime.jobmanager.PartitionProducerDisposedException; +import org.apache.flink.runtime.jobmaster.SerializedInputSplit; +import org.apache.flink.runtime.jobmaster.slotpool.SlotProvider; +import org.apache.flink.runtime.messages.FlinkJobNotFoundException; +import org.apache.flink.runtime.messages.checkpoint.AcknowledgeCheckpoint; +import org.apache.flink.runtime.messages.checkpoint.DeclineCheckpoint; +import org.apache.flink.runtime.messages.webmonitor.JobDetails; +import org.apache.flink.runtime.metrics.groups.JobManagerJobMetricGroup; +import org.apache.flink.runtime.query.KvStateLocation; +import org.apache.flink.runtime.query.KvStateLocationRegistry; +import org.apache.flink.runtime.query.UnknownKvStateLocation; +import org.apache.flink.runtime.rest.handler.legacy.backpressure.BackPressureStatsTracker; +import org.apache.flink.runtime.rest.handler.legacy.backpressure.OperatorBackPressureStats; +import org.apache.flink.runtime.scheduler.adapter.ExecutionGraphToSchedulingTopologyAdapter; +import org.apache.flink.runtime.scheduler.strategy.ExecutionVertexID; +import org.apache.flink.runtime.shuffle.ShuffleMaster; +import org.apache.flink.runtime.state.KeyGroupRange; +import org.apache.flink.runtime.taskmanager.TaskExecutionState; +import org.apache.flink.runtime.taskmanager.TaskManagerLocation; +import org.apache.flink.runtime.webmonitor.WebMonitorUtils; +import org.apache.flink.util.FlinkException; +import org.apache.flink.util.InstantiationUtil; +import org.apache.flink.util.function.FunctionUtils; + +import org.slf4j.Logger; + +import java.io.IOException; +import java.net.InetSocketAddress; +import java.util.Collection; +import java.util.Optional; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.CompletionException; +import java.util.concurrent.Executor; +import java.util.concurrent.ScheduledExecutorService; + +import static org.apache.flink.util.Preconditions.checkNotNull; +import static org.apache.flink.util.Preconditions.checkState; + +/** + * Base class which can be used to implement {@link SchedulerNG}. + */ +public abstract class SchedulerBase implements SchedulerNG { + + private final Logger log; + + private final JobGraph jobGraph; + + private final ExecutionGraph executionGraph; + + private final BackPressureStatsTracker backPressureStatsTracker; + + private final Executor ioExecutor; + + private final Configuration jobMasterConfiguration; + + private final SlotProvider slotProvider; + + private final ScheduledExecutorService futureExecutor; + + private final ClassLoader userCodeLoader; + + private final CheckpointRecoveryFactory checkpointRecoveryFactory; + + private final Time rpcTimeout; + + private final RestartStrategy restartStrategy; + + private final BlobWriter blobWriter; + + private final Time slotRequestTimeout; + + private ComponentMainThreadExecutor mainThreadExecutor = new ComponentMainThreadExecutor.DummyComponentMainThreadExecutor( + "SchedulerBase is not initialized with proper main thread executor. " + + "Call to SchedulerBase.setMainThreadExecutor(...) required."); + + public SchedulerBase( + final Logger log, + final JobGraph jobGraph, + final BackPressureStatsTracker backPressureStatsTracker, + final Executor ioExecutor, + final Configuration jobMasterConfiguration, + final SlotProvider slotProvider, + final ScheduledExecutorService futureExecutor, + final ClassLoader userCodeLoader, + final CheckpointRecoveryFactory checkpointRecoveryFactory, + final Time rpcTimeout, + final RestartStrategyFactory restartStrategyFactory, + final BlobWriter blobWriter, + final JobManagerJobMetricGroup jobManagerJobMetricGroup, + final Time slotRequestTimeout, + final ShuffleMaster<?> shuffleMaster, + final PartitionTracker partitionTracker) throws Exception { + + this.log = checkNotNull(log); + this.jobGraph = checkNotNull(jobGraph); + this.backPressureStatsTracker = checkNotNull(backPressureStatsTracker); + this.ioExecutor = checkNotNull(ioExecutor); + this.jobMasterConfiguration = checkNotNull(jobMasterConfiguration); + this.slotProvider = checkNotNull(slotProvider); + this.futureExecutor = checkNotNull(futureExecutor); + this.userCodeLoader = checkNotNull(userCodeLoader); + this.checkpointRecoveryFactory = checkNotNull(checkpointRecoveryFactory); + this.rpcTimeout = checkNotNull(rpcTimeout); + + final RestartStrategies.RestartStrategyConfiguration restartStrategyConfiguration = + jobGraph.getSerializedExecutionConfig() + .deserializeValue(userCodeLoader) + .getRestartStrategy(); + + this.restartStrategy = RestartStrategyResolving.resolve(restartStrategyConfiguration, + restartStrategyFactory, + jobGraph.isCheckpointingEnabled()); + + log.info("Using restart strategy {} for {} ({}).", this.restartStrategy, jobGraph.getName(), jobGraph.getJobID()); + + this.blobWriter = checkNotNull(blobWriter); + this.slotRequestTimeout = checkNotNull(slotRequestTimeout); + + this.executionGraph = createAndRestoreExecutionGraph(jobManagerJobMetricGroup, checkNotNull(shuffleMaster), checkNotNull(partitionTracker)); + } + + private ExecutionGraph createAndRestoreExecutionGraph( + JobManagerJobMetricGroup currentJobManagerJobMetricGroup, + ShuffleMaster<?> shuffleMaster, + PartitionTracker partitionTracker) throws Exception { + + ExecutionGraph newExecutionGraph = createExecutionGraph(currentJobManagerJobMetricGroup, shuffleMaster, partitionTracker); + + final CheckpointCoordinator checkpointCoordinator = newExecutionGraph.getCheckpointCoordinator(); + + if (checkpointCoordinator != null) { + // check whether we find a valid checkpoint + if (!checkpointCoordinator.restoreLatestCheckpointedState( + newExecutionGraph.getAllVertices(), + false, + false)) { + + // check whether we can restore from a savepoint + tryRestoreExecutionGraphFromSavepoint(newExecutionGraph, jobGraph.getSavepointRestoreSettings()); + } + } + + return newExecutionGraph; + } + + private ExecutionGraph createExecutionGraph( + JobManagerJobMetricGroup currentJobManagerJobMetricGroup, + ShuffleMaster<?> shuffleMaster, + final PartitionTracker partitionTracker) throws JobExecutionException, JobException { + return ExecutionGraphBuilder.buildGraph( + null, + jobGraph, + jobMasterConfiguration, + futureExecutor, + ioExecutor, + slotProvider, + userCodeLoader, + checkpointRecoveryFactory, + rpcTimeout, + restartStrategy, + currentJobManagerJobMetricGroup, + blobWriter, + slotRequestTimeout, + log, + shuffleMaster, + partitionTracker); + } + + /** + * Tries to restore the given {@link ExecutionGraph} from the provided {@link SavepointRestoreSettings}. + * + * @param executionGraphToRestore {@link ExecutionGraph} which is supposed to be restored + * @param savepointRestoreSettings {@link SavepointRestoreSettings} containing information about the savepoint to restore from + * @throws Exception if the {@link ExecutionGraph} could not be restored + */ + private void tryRestoreExecutionGraphFromSavepoint(ExecutionGraph executionGraphToRestore, SavepointRestoreSettings savepointRestoreSettings) throws Exception { + if (savepointRestoreSettings.restoreSavepoint()) { + final CheckpointCoordinator checkpointCoordinator = executionGraphToRestore.getCheckpointCoordinator(); + if (checkpointCoordinator != null) { + checkpointCoordinator.restoreSavepoint( + savepointRestoreSettings.getRestorePath(), + savepointRestoreSettings.allowNonRestoredState(), + executionGraphToRestore.getAllVertices(), + userCodeLoader); + } + } + } + + @Deprecated + protected ExecutionGraph getExecutionGraph() { + return executionGraph; + } + + protected void setTaskFailureListener(TaskFailureListener taskFailureListener) { + executionGraph.setTaskFailureListener(taskFailureListener); + } + + protected void resetForNewExecution(final Collection<ExecutionVertexID> verticesToDeploy) { + verticesToDeploy.forEach(executionVertexId -> getExecutionVertex(executionVertexId) + .resetForNewExecutionIfInTerminalState()); + } + + protected void transitionToScheduled(final Collection<ExecutionVertexID> verticesToDeploy) { + verticesToDeploy.forEach(executionVertexId -> getExecutionVertex(executionVertexId) + .getCurrentExecutionAttempt() + .transitionState(ExecutionState.SCHEDULED)); + } + + protected void updateConsumers(ResultPartitionID resultPartitionId) { + try { + executionGraph.scheduleOrUpdateConsumers(resultPartitionId); + } catch (ExecutionGraphException e) { + throw new RuntimeException(e); + } + } + + protected ComponentMainThreadExecutor getMainThreadExecutor() { + return mainThreadExecutor; + } + + protected void failJob(Throwable cause) { + executionGraph.failJob(cause); + } + + protected void updateState(TaskExecutionState taskExecutionState) { + executionGraph.updateState(taskExecutionState); + } + + protected FailoverTopology getFailoverTopology() { + return new DefaultFailoverTopology(executionGraph); + } + + protected ExecutionGraphToSchedulingTopologyAdapter getSchedulingTopology() { + return new ExecutionGraphToSchedulingTopologyAdapter(executionGraph); Review comment: It's better to cache the created topology. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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