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TaskExecutor.java
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TaskExecutor.java
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/*
* 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.taskexecutor;
import org.apache.flink.annotation.VisibleForTesting;
import org.apache.flink.api.common.JobID;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.configuration.BatchExecutionOptions;
import org.apache.flink.configuration.ClusterOptions;
import org.apache.flink.management.jmx.JMXService;
import org.apache.flink.runtime.accumulators.AccumulatorSnapshot;
import org.apache.flink.runtime.blob.JobPermanentBlobService;
import org.apache.flink.runtime.blob.PermanentBlobKey;
import org.apache.flink.runtime.blob.TaskExecutorBlobService;
import org.apache.flink.runtime.blob.TransientBlobKey;
import org.apache.flink.runtime.blob.TransientBlobService;
import org.apache.flink.runtime.checkpoint.CheckpointException;
import org.apache.flink.runtime.checkpoint.CheckpointFailureReason;
import org.apache.flink.runtime.checkpoint.CheckpointOptions;
import org.apache.flink.runtime.checkpoint.JobManagerTaskRestore;
import org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager;
import org.apache.flink.runtime.clusterframework.types.AllocationID;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
import org.apache.flink.runtime.clusterframework.types.SlotID;
import org.apache.flink.runtime.deployment.ResultPartitionDeploymentDescriptor;
import org.apache.flink.runtime.deployment.TaskDeploymentDescriptor;
import org.apache.flink.runtime.deployment.TaskDeploymentDescriptorFactory.ShuffleDescriptorGroup;
import org.apache.flink.runtime.entrypoint.ClusterInformation;
import org.apache.flink.runtime.execution.ExecutionState;
import org.apache.flink.runtime.execution.librarycache.LibraryCacheManager;
import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
import org.apache.flink.runtime.executiongraph.JobInformation;
import org.apache.flink.runtime.executiongraph.PartitionInfo;
import org.apache.flink.runtime.executiongraph.TaskInformation;
import org.apache.flink.runtime.externalresource.ExternalResourceInfoProvider;
import org.apache.flink.runtime.filecache.FileCache;
import org.apache.flink.runtime.heartbeat.HeartbeatListener;
import org.apache.flink.runtime.heartbeat.HeartbeatManager;
import org.apache.flink.runtime.heartbeat.HeartbeatReceiver;
import org.apache.flink.runtime.heartbeat.HeartbeatServices;
import org.apache.flink.runtime.highavailability.HighAvailabilityServices;
import org.apache.flink.runtime.instance.HardwareDescription;
import org.apache.flink.runtime.instance.InstanceID;
import org.apache.flink.runtime.io.network.partition.ResultPartitionID;
import org.apache.flink.runtime.io.network.partition.TaskExecutorPartitionInfo;
import org.apache.flink.runtime.io.network.partition.TaskExecutorPartitionTracker;
import org.apache.flink.runtime.jobgraph.IntermediateDataSetID;
import org.apache.flink.runtime.jobgraph.OperatorID;
import org.apache.flink.runtime.jobgraph.tasks.InputSplitProvider;
import org.apache.flink.runtime.jobgraph.tasks.TaskOperatorEventGateway;
import org.apache.flink.runtime.jobmaster.AllocatedSlotInfo;
import org.apache.flink.runtime.jobmaster.AllocatedSlotReport;
import org.apache.flink.runtime.jobmaster.JMTMRegistrationRejection;
import org.apache.flink.runtime.jobmaster.JMTMRegistrationSuccess;
import org.apache.flink.runtime.jobmaster.JobMasterGateway;
import org.apache.flink.runtime.jobmaster.JobMasterId;
import org.apache.flink.runtime.jobmaster.ResourceManagerAddress;
import org.apache.flink.runtime.leaderretrieval.LeaderRetrievalListener;
import org.apache.flink.runtime.leaderretrieval.LeaderRetrievalService;
import org.apache.flink.runtime.memory.MemoryManager;
import org.apache.flink.runtime.memory.SharedResources;
import org.apache.flink.runtime.messages.Acknowledge;
import org.apache.flink.runtime.messages.TaskThreadInfoResponse;
import org.apache.flink.runtime.messages.ThreadInfoSample;
import org.apache.flink.runtime.metrics.MetricNames;
import org.apache.flink.runtime.metrics.groups.TaskManagerJobMetricGroup;
import org.apache.flink.runtime.metrics.groups.TaskManagerMetricGroup;
import org.apache.flink.runtime.metrics.groups.TaskMetricGroup;
import org.apache.flink.runtime.operators.coordination.OperatorEvent;
import org.apache.flink.runtime.operators.coordination.TaskNotRunningException;
import org.apache.flink.runtime.query.KvStateClientProxy;
import org.apache.flink.runtime.query.KvStateRegistry;
import org.apache.flink.runtime.query.KvStateServer;
import org.apache.flink.runtime.registration.RegistrationConnectionListener;
import org.apache.flink.runtime.resourcemanager.ResourceManagerGateway;
import org.apache.flink.runtime.resourcemanager.ResourceManagerId;
import org.apache.flink.runtime.resourcemanager.TaskExecutorRegistration;
import org.apache.flink.runtime.rest.messages.LogInfo;
import org.apache.flink.runtime.rest.messages.ProfilingInfo;
import org.apache.flink.runtime.rest.messages.ThreadDumpInfo;
import org.apache.flink.runtime.rpc.FatalErrorHandler;
import org.apache.flink.runtime.rpc.RpcEndpoint;
import org.apache.flink.runtime.rpc.RpcService;
import org.apache.flink.runtime.rpc.RpcServiceUtils;
import org.apache.flink.runtime.security.token.DelegationTokenReceiverRepository;
import org.apache.flink.runtime.shuffle.DefaultPartitionWithMetrics;
import org.apache.flink.runtime.shuffle.PartitionWithMetrics;
import org.apache.flink.runtime.shuffle.ShuffleDescriptor;
import org.apache.flink.runtime.shuffle.ShuffleEnvironment;
import org.apache.flink.runtime.state.FileMergingSnapshotManagerClosableWrapper;
import org.apache.flink.runtime.state.TaskExecutorChannelStateExecutorFactoryManager;
import org.apache.flink.runtime.state.TaskExecutorFileMergingManager;
import org.apache.flink.runtime.state.TaskExecutorLocalStateStoresManager;
import org.apache.flink.runtime.state.TaskExecutorStateChangelogStoragesManager;
import org.apache.flink.runtime.state.TaskLocalStateStore;
import org.apache.flink.runtime.state.TaskStateManager;
import org.apache.flink.runtime.state.TaskStateManagerImpl;
import org.apache.flink.runtime.state.changelog.StateChangelogStorage;
import org.apache.flink.runtime.taskexecutor.exceptions.RegistrationTimeoutException;
import org.apache.flink.runtime.taskexecutor.exceptions.SlotAllocationException;
import org.apache.flink.runtime.taskexecutor.exceptions.SlotOccupiedException;
import org.apache.flink.runtime.taskexecutor.exceptions.TaskException;
import org.apache.flink.runtime.taskexecutor.exceptions.TaskManagerException;
import org.apache.flink.runtime.taskexecutor.exceptions.TaskSubmissionException;
import org.apache.flink.runtime.taskexecutor.rpc.RpcCheckpointResponder;
import org.apache.flink.runtime.taskexecutor.rpc.RpcGlobalAggregateManager;
import org.apache.flink.runtime.taskexecutor.rpc.RpcInputSplitProvider;
import org.apache.flink.runtime.taskexecutor.rpc.RpcKvStateRegistryListener;
import org.apache.flink.runtime.taskexecutor.rpc.RpcPartitionStateChecker;
import org.apache.flink.runtime.taskexecutor.rpc.RpcTaskOperatorEventGateway;
import org.apache.flink.runtime.taskexecutor.slot.SlotActions;
import org.apache.flink.runtime.taskexecutor.slot.SlotAllocationSnapshot;
import org.apache.flink.runtime.taskexecutor.slot.SlotAllocationSnapshotPersistenceService;
import org.apache.flink.runtime.taskexecutor.slot.SlotNotActiveException;
import org.apache.flink.runtime.taskexecutor.slot.SlotNotFoundException;
import org.apache.flink.runtime.taskexecutor.slot.SlotOffer;
import org.apache.flink.runtime.taskexecutor.slot.TaskSlot;
import org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable;
import org.apache.flink.runtime.taskmanager.CheckpointResponder;
import org.apache.flink.runtime.taskmanager.Task;
import org.apache.flink.runtime.taskmanager.TaskExecutionState;
import org.apache.flink.runtime.taskmanager.TaskManagerActions;
import org.apache.flink.runtime.taskmanager.UnresolvedTaskManagerLocation;
import org.apache.flink.runtime.util.GroupCache;
import org.apache.flink.runtime.util.profiler.ProfilingService;
import org.apache.flink.runtime.webmonitor.threadinfo.ThreadInfoSamplesRequest;
import org.apache.flink.types.SerializableOptional;
import org.apache.flink.util.CollectionUtil;
import org.apache.flink.util.ExceptionUtils;
import org.apache.flink.util.FlinkException;
import org.apache.flink.util.FlinkExpectedException;
import org.apache.flink.util.MdcUtils;
import org.apache.flink.util.MdcUtils.MdcCloseable;
import org.apache.flink.util.OptionalConsumer;
import org.apache.flink.util.Preconditions;
import org.apache.flink.util.SerializedValue;
import org.apache.flink.util.StringUtils;
import org.apache.flink.util.concurrent.ExecutorThreadFactory;
import org.apache.flink.util.concurrent.FutureUtils;
import org.apache.flink.shaded.guava31.com.google.common.collect.ImmutableList;
import org.apache.flink.shaded.guava31.com.google.common.collect.Sets;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeoutException;
import java.util.function.BiConsumer;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static org.apache.flink.runtime.shuffle.ShuffleServiceOptions.NETTY_SHUFFLE_SERVICE_FACTORY_CLASS;
import static org.apache.flink.runtime.shuffle.ShuffleServiceOptions.SHUFFLE_SERVICE_FACTORY_CLASS;
import static org.apache.flink.util.Preconditions.checkArgument;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* TaskExecutor implementation. The task executor is responsible for the execution of multiple
* {@link Task}.
*/
public class TaskExecutor extends RpcEndpoint implements TaskExecutorGateway {
public static final String TASK_MANAGER_NAME = "taskmanager";
/** The access to the leader election and retrieval services. */
private final HighAvailabilityServices haServices;
private final TaskManagerServices taskExecutorServices;
/** The task manager configuration. */
private final TaskManagerConfiguration taskManagerConfiguration;
/** The fatal error handler to use in case of a fatal error. */
private final FatalErrorHandler fatalErrorHandler;
private final TaskExecutorBlobService taskExecutorBlobService;
private final LibraryCacheManager libraryCacheManager;
/** The address to metric query service on this Task Manager. */
@Nullable private final String metricQueryServiceAddress;
// --------- TaskManager services --------
/** The connection information of this task manager. */
private final UnresolvedTaskManagerLocation unresolvedTaskManagerLocation;
private final TaskManagerMetricGroup taskManagerMetricGroup;
/** The state manager for this task, providing state managers per slot. */
private final TaskExecutorLocalStateStoresManager localStateStoresManager;
/**
* The file merging manager for this task, providing file merging snapshot manager per job, see
* {@link FileMergingSnapshotManager} for details.
*/
private final TaskExecutorFileMergingManager fileMergingManager;
/** The changelog manager for this task, providing changelog storage per job. */
private final TaskExecutorStateChangelogStoragesManager changelogStoragesManager;
/**
* The channel state executor factory manager for this task, providing channel state executor
* factory per job.
*/
private final TaskExecutorChannelStateExecutorFactoryManager channelStateExecutorFactoryManager;
/** Information provider for external resources. */
private final ExternalResourceInfoProvider externalResourceInfoProvider;
/** The network component in the task manager. */
private final ShuffleEnvironment<?, ?> shuffleEnvironment;
/** The kvState registration service in the task manager. */
private final KvStateService kvStateService;
private final Executor ioExecutor;
/** {@link MemoryManager} shared across all tasks. */
private final SharedResources sharedResources;
// --------- task slot allocation table -----------
private final TaskSlotTable<Task> taskSlotTable;
private final Map<JobID, UUID> currentSlotOfferPerJob = new HashMap<>();
private final JobTable jobTable;
private final JobLeaderService jobLeaderService;
private final LeaderRetrievalService resourceManagerLeaderRetriever;
private final SlotAllocationSnapshotPersistenceService slotAllocationSnapshotPersistenceService;
// ------------------------------------------------------------------------
private final HardwareDescription hardwareDescription;
private final TaskExecutorMemoryConfiguration memoryConfiguration;
private FileCache fileCache;
/** The heartbeat manager for job manager in the task manager. */
private final HeartbeatManager<AllocatedSlotReport, TaskExecutorToJobManagerHeartbeatPayload>
jobManagerHeartbeatManager;
/** The heartbeat manager for resource manager in the task manager. */
private final HeartbeatManager<Void, TaskExecutorHeartbeatPayload>
resourceManagerHeartbeatManager;
private final TaskExecutorPartitionTracker partitionTracker;
private final DelegationTokenReceiverRepository delegationTokenReceiverRepository;
// --------- resource manager --------
@Nullable private ResourceManagerAddress resourceManagerAddress;
@Nullable private EstablishedResourceManagerConnection establishedResourceManagerConnection;
@Nullable private TaskExecutorToResourceManagerConnection resourceManagerConnection;
@Nullable private UUID currentRegistrationTimeoutId;
private final Map<JobID, Collection<CompletableFuture<ExecutionState>>>
taskResultPartitionCleanupFuturesPerJob = CollectionUtil.newHashMapWithExpectedSize(8);
private final ThreadInfoSampleService threadInfoSampleService;
private final GroupCache<JobID, PermanentBlobKey, JobInformation> jobInformationCache;
private final GroupCache<JobID, PermanentBlobKey, TaskInformation> taskInformationCache;
private final GroupCache<JobID, PermanentBlobKey, ShuffleDescriptorGroup>
shuffleDescriptorsCache;
private final ProfilingService profilingService;
private final Set<JobID> jobPartitionToCleanupSet = new HashSet<>();
public TaskExecutor(
RpcService rpcService,
TaskManagerConfiguration taskManagerConfiguration,
HighAvailabilityServices haServices,
TaskManagerServices taskExecutorServices,
ExternalResourceInfoProvider externalResourceInfoProvider,
HeartbeatServices heartbeatServices,
TaskManagerMetricGroup taskManagerMetricGroup,
@Nullable String metricQueryServiceAddress,
TaskExecutorBlobService taskExecutorBlobService,
FatalErrorHandler fatalErrorHandler,
TaskExecutorPartitionTracker partitionTracker,
DelegationTokenReceiverRepository delegationTokenReceiverRepository) {
super(rpcService, RpcServiceUtils.createRandomName(TASK_MANAGER_NAME));
checkArgument(
taskManagerConfiguration.getNumberSlots() > 0,
"The number of slots has to be larger than 0.");
this.taskManagerConfiguration = checkNotNull(taskManagerConfiguration);
this.taskExecutorServices = checkNotNull(taskExecutorServices);
this.haServices = checkNotNull(haServices);
this.fatalErrorHandler = checkNotNull(fatalErrorHandler);
this.partitionTracker = partitionTracker;
this.delegationTokenReceiverRepository = checkNotNull(delegationTokenReceiverRepository);
this.taskManagerMetricGroup = checkNotNull(taskManagerMetricGroup);
this.taskExecutorBlobService = checkNotNull(taskExecutorBlobService);
this.metricQueryServiceAddress = metricQueryServiceAddress;
this.externalResourceInfoProvider = checkNotNull(externalResourceInfoProvider);
this.libraryCacheManager = taskExecutorServices.getLibraryCacheManager();
this.taskSlotTable = taskExecutorServices.getTaskSlotTable();
this.jobTable = taskExecutorServices.getJobTable();
this.jobLeaderService = taskExecutorServices.getJobLeaderService();
this.unresolvedTaskManagerLocation =
taskExecutorServices.getUnresolvedTaskManagerLocation();
this.localStateStoresManager = taskExecutorServices.getTaskManagerStateStore();
this.fileMergingManager = taskExecutorServices.getTaskManagerFileMergingManager();
this.changelogStoragesManager = taskExecutorServices.getTaskManagerChangelogManager();
this.channelStateExecutorFactoryManager =
taskExecutorServices.getTaskManagerChannelStateManager();
this.shuffleEnvironment = taskExecutorServices.getShuffleEnvironment();
this.kvStateService = taskExecutorServices.getKvStateService();
this.ioExecutor = taskExecutorServices.getIOExecutor();
this.resourceManagerLeaderRetriever = haServices.getResourceManagerLeaderRetriever();
this.hardwareDescription =
HardwareDescription.extractFromSystem(taskExecutorServices.getManagedMemorySize());
this.memoryConfiguration =
TaskExecutorMemoryConfiguration.create(taskManagerConfiguration.getConfiguration());
this.resourceManagerAddress = null;
this.resourceManagerConnection = null;
this.currentRegistrationTimeoutId = null;
final ResourceID resourceId =
taskExecutorServices.getUnresolvedTaskManagerLocation().getResourceID();
this.jobManagerHeartbeatManager =
createJobManagerHeartbeatManager(heartbeatServices, resourceId);
this.resourceManagerHeartbeatManager =
createResourceManagerHeartbeatManager(heartbeatServices, resourceId);
ExecutorThreadFactory sampleThreadFactory =
new ExecutorThreadFactory.Builder()
.setPoolName("flink-thread-info-sampler")
.build();
ScheduledExecutorService sampleExecutor =
Executors.newSingleThreadScheduledExecutor(sampleThreadFactory);
this.threadInfoSampleService = new ThreadInfoSampleService(sampleExecutor);
this.profilingService =
ProfilingService.getInstance(taskManagerConfiguration.getConfiguration());
this.slotAllocationSnapshotPersistenceService =
taskExecutorServices.getSlotAllocationSnapshotPersistenceService();
this.sharedResources = taskExecutorServices.getSharedResources();
this.jobInformationCache = taskExecutorServices.getJobInformationCache();
this.taskInformationCache = taskExecutorServices.getTaskInformationCache();
this.shuffleDescriptorsCache = taskExecutorServices.getShuffleDescriptorCache();
}
private HeartbeatManager<Void, TaskExecutorHeartbeatPayload>
createResourceManagerHeartbeatManager(
HeartbeatServices heartbeatServices, ResourceID resourceId) {
return heartbeatServices.createHeartbeatManager(
resourceId, new ResourceManagerHeartbeatListener(), getMainThreadExecutor(), log);
}
private HeartbeatManager<AllocatedSlotReport, TaskExecutorToJobManagerHeartbeatPayload>
createJobManagerHeartbeatManager(
HeartbeatServices heartbeatServices, ResourceID resourceId) {
return heartbeatServices.createHeartbeatManager(
resourceId, new JobManagerHeartbeatListener(), getMainThreadExecutor(), log);
}
private boolean shouldRetainPartitionsOnJobManagerConnectionLost() {
return taskManagerConfiguration
.getConfiguration()
.get(BatchExecutionOptions.JOB_RECOVERY_ENABLED)
&& taskManagerConfiguration
.getConfiguration()
.get(SHUFFLE_SERVICE_FACTORY_CLASS)
.equals(NETTY_SHUFFLE_SERVICE_FACTORY_CLASS);
}
@Override
public CompletableFuture<Boolean> canBeReleased() {
return CompletableFuture.completedFuture(
shuffleEnvironment.getPartitionsOccupyingLocalResources().isEmpty());
}
@Override
public CompletableFuture<Collection<LogInfo>> requestLogList(Time timeout) {
return CompletableFuture.supplyAsync(
() -> {
final String logDir = taskManagerConfiguration.getTaskManagerLogDir();
if (logDir != null) {
final File[] logFiles = new File(logDir).listFiles();
if (logFiles == null) {
throw new CompletionException(
new FlinkException(
String.format(
"There isn't a log file in TaskExecutor’s log dir %s.",
logDir)));
}
return Arrays.stream(logFiles)
.filter(File::isFile)
.map(
logFile ->
new LogInfo(
logFile.getName(),
logFile.length(),
logFile.lastModified()))
.collect(Collectors.toList());
}
return Collections.emptyList();
},
ioExecutor);
}
// ------------------------------------------------------------------------
// Life cycle
// ------------------------------------------------------------------------
@Override
public void onStart() throws Exception {
try {
startTaskExecutorServices();
} catch (Throwable t) {
final TaskManagerException exception =
new TaskManagerException(
String.format("Could not start the TaskExecutor %s", getAddress()), t);
onFatalError(exception);
throw exception;
}
startRegistrationTimeout();
}
private void startTaskExecutorServices() throws Exception {
try {
// start by connecting to the ResourceManager
resourceManagerLeaderRetriever.start(new ResourceManagerLeaderListener());
// tell the task slot table who's responsible for the task slot actions
taskSlotTable.start(new SlotActionsImpl(), getMainThreadExecutor());
// start the job leader service
jobLeaderService.start(
getAddress(), getRpcService(), haServices, new JobLeaderListenerImpl());
fileCache =
new FileCache(
taskManagerConfiguration.getTmpDirectories(),
taskExecutorBlobService.getPermanentBlobService());
tryLoadLocalAllocationSnapshots();
} catch (Exception e) {
handleStartTaskExecutorServicesException(e);
}
}
private void handleStartTaskExecutorServicesException(Exception e) throws Exception {
try {
stopTaskExecutorServices();
} catch (Exception inner) {
e.addSuppressed(inner);
}
throw e;
}
/** Called to shut down the TaskManager. The method closes all TaskManager services. */
@Override
public CompletableFuture<Void> onStop() {
log.info("Stopping TaskExecutor {}.", getAddress());
Throwable jobManagerDisconnectThrowable = null;
FlinkExpectedException cause =
new FlinkExpectedException("The TaskExecutor is shutting down.");
closeResourceManagerConnection(cause);
for (JobTable.Job job : jobTable.getJobs()) {
try {
closeJob(job, cause);
} catch (Throwable t) {
jobManagerDisconnectThrowable =
ExceptionUtils.firstOrSuppressed(t, jobManagerDisconnectThrowable);
}
}
changelogStoragesManager.shutdown();
channelStateExecutorFactoryManager.shutdown();
jobInformationCache.clear();
taskInformationCache.clear();
shuffleDescriptorsCache.clear();
Preconditions.checkState(jobTable.isEmpty());
final Throwable throwableBeforeTasksCompletion = jobManagerDisconnectThrowable;
return FutureUtils.runAfterwards(taskSlotTable.closeAsync(), this::stopTaskExecutorServices)
.handle(
(ignored, throwable) -> {
handleOnStopException(throwableBeforeTasksCompletion, throwable);
return null;
});
}
private void handleOnStopException(
Throwable throwableBeforeTasksCompletion, Throwable throwableAfterTasksCompletion) {
final Throwable throwable;
if (throwableBeforeTasksCompletion != null) {
throwable =
ExceptionUtils.firstOrSuppressed(
throwableBeforeTasksCompletion, throwableAfterTasksCompletion);
} else {
throwable = throwableAfterTasksCompletion;
}
if (throwable != null) {
throw new CompletionException(
new FlinkException("Error while shutting the TaskExecutor down.", throwable));
} else {
log.info("Stopped TaskExecutor {}.", getAddress());
}
}
private void stopTaskExecutorServices() throws Exception {
Exception exception = null;
try {
threadInfoSampleService.close();
} catch (Exception e) {
exception = ExceptionUtils.firstOrSuppressed(e, exception);
}
try {
jobLeaderService.stop();
} catch (Exception e) {
exception = ExceptionUtils.firstOrSuppressed(e, exception);
}
try {
resourceManagerLeaderRetriever.stop();
} catch (Exception e) {
exception = ExceptionUtils.firstOrSuppressed(e, exception);
}
try {
taskExecutorServices.shutDown();
} catch (Exception e) {
exception = ExceptionUtils.firstOrSuppressed(e, exception);
}
try {
fileCache.shutdown();
} catch (Exception e) {
exception = ExceptionUtils.firstOrSuppressed(e, exception);
}
// it will call close() recursively from the parent to children
taskManagerMetricGroup.close();
ExceptionUtils.tryRethrowException(exception);
}
// ======================================================================
// RPC methods
// ======================================================================
@Override
public CompletableFuture<TaskThreadInfoResponse> requestThreadInfoSamples(
final Collection<ExecutionAttemptID> taskExecutionAttemptIds,
final ThreadInfoSamplesRequest requestParams,
final Time timeout) {
final Collection<Task> tasks = new ArrayList<>();
for (ExecutionAttemptID executionAttemptId : taskExecutionAttemptIds) {
final Task task = taskSlotTable.getTask(executionAttemptId);
if (task == null) {
log.warn(
String.format(
"Cannot sample task %s. "
+ "Task is not known to the task manager.",
executionAttemptId));
} else {
tasks.add(task);
}
}
Map<Long, ExecutionAttemptID> sampleableTasks =
tasks.stream()
.collect(
Collectors.toMap(
task -> task.getExecutingThread().getId(),
Task::getExecutionId));
final CompletableFuture<Map<ExecutionAttemptID, Collection<ThreadInfoSample>>>
stackTracesFuture =
threadInfoSampleService.requestThreadInfoSamples(
sampleableTasks, requestParams);
return stackTracesFuture.thenApply(TaskThreadInfoResponse::new);
}
// ----------------------------------------------------------------------
// Task lifecycle RPCs
// ----------------------------------------------------------------------
@Override
public CompletableFuture<Acknowledge> submitTask(
TaskDeploymentDescriptor tdd, JobMasterId jobMasterId, Time timeout) {
final JobID jobId = tdd.getJobId();
// todo: consider adding task info
try (MdcCloseable ignored = MdcUtils.withContext(MdcUtils.asContextData(jobId))) {
final ExecutionAttemptID executionAttemptID = tdd.getExecutionAttemptId();
final JobTable.Connection jobManagerConnection =
jobTable.getConnection(jobId)
.orElseThrow(
() -> {
final String message =
"Could not submit task because there is no JobManager "
+ "associated for the job "
+ jobId
+ '.';
log.debug(message);
return new TaskSubmissionException(message);
});
if (!Objects.equals(jobManagerConnection.getJobMasterId(), jobMasterId)) {
final String message =
"Rejecting the task submission because the job manager leader id "
+ jobMasterId
+ " does not match the expected job manager leader id "
+ jobManagerConnection.getJobMasterId()
+ '.';
log.debug(message);
throw new TaskSubmissionException(message);
}
if (!taskSlotTable.tryMarkSlotActive(jobId, tdd.getAllocationId())) {
final String message =
"No task slot allocated for job ID "
+ jobId
+ " and allocation ID "
+ tdd.getAllocationId()
+ '.';
log.debug(message);
throw new TaskSubmissionException(message);
}
// re-integrate offloaded data and deserialize shuffle descriptors
try {
tdd.loadBigData(
taskExecutorBlobService.getPermanentBlobService(),
jobInformationCache,
taskInformationCache,
shuffleDescriptorsCache);
} catch (IOException | ClassNotFoundException e) {
throw new TaskSubmissionException(
"Could not re-integrate offloaded TaskDeploymentDescriptor data.", e);
}
// deserialize the pre-serialized information
final JobInformation jobInformation;
final TaskInformation taskInformation;
try {
jobInformation = tdd.getJobInformation();
taskInformation = tdd.getTaskInformation();
} catch (IOException | ClassNotFoundException e) {
throw new TaskSubmissionException(
"Could not deserialize the job or task information.", e);
}
if (!jobId.equals(jobInformation.getJobId())) {
throw new TaskSubmissionException(
"Inconsistent job ID information inside TaskDeploymentDescriptor ("
+ tdd.getJobId()
+ " vs. "
+ jobInformation.getJobId()
+ ")");
}
TaskManagerJobMetricGroup jobGroup =
taskManagerMetricGroup.addJob(
jobInformation.getJobId(), jobInformation.getJobName());
// note that a pre-existing job group can NOT be closed concurrently - this is done by
// the same TM thread in removeJobMetricsGroup
TaskMetricGroup taskMetricGroup =
jobGroup.addTask(tdd.getExecutionAttemptId(), taskInformation.getTaskName());
InputSplitProvider inputSplitProvider =
new RpcInputSplitProvider(
jobManagerConnection.getJobManagerGateway(),
taskInformation.getJobVertexId(),
tdd.getExecutionAttemptId(),
taskManagerConfiguration.getRpcTimeout());
final TaskOperatorEventGateway taskOperatorEventGateway =
new RpcTaskOperatorEventGateway(
jobManagerConnection.getJobManagerGateway(),
executionAttemptID,
(t) -> runAsync(() -> failTask(executionAttemptID, t)));
TaskManagerActions taskManagerActions = jobManagerConnection.getTaskManagerActions();
CheckpointResponder checkpointResponder = jobManagerConnection.getCheckpointResponder();
GlobalAggregateManager aggregateManager =
jobManagerConnection.getGlobalAggregateManager();
LibraryCacheManager.ClassLoaderHandle classLoaderHandle =
jobManagerConnection.getClassLoaderHandle();
PartitionProducerStateChecker partitionStateChecker =
jobManagerConnection.getPartitionStateChecker();
final TaskLocalStateStore localStateStore =
localStateStoresManager.localStateStoreForSubtask(
jobId,
tdd.getAllocationId(),
taskInformation.getJobVertexId(),
tdd.getSubtaskIndex(),
taskManagerConfiguration.getConfiguration(),
jobInformation.getJobConfiguration());
final FileMergingSnapshotManager fileMergingSnapshotManager =
fileMergingManager.fileMergingSnapshotManagerForTask(
jobId,
tdd.getExecutionAttemptId(),
taskManagerConfiguration.getConfiguration(),
jobInformation.getJobConfiguration());
final FileMergingSnapshotManagerClosableWrapper fileMergingSnapshotManagerClosable =
fileMergingSnapshotManager == null
? null
: FileMergingSnapshotManagerClosableWrapper.of(
fileMergingSnapshotManager,
() ->
fileMergingManager.releaseMergingSnapshotManagerForTask(
jobId, tdd.getExecutionAttemptId()));
// TODO: Pass config value from user program and do overriding here.
final StateChangelogStorage<?> changelogStorage;
try {
changelogStorage =
changelogStoragesManager.stateChangelogStorageForJob(
jobId,
taskManagerConfiguration.getConfiguration(),
jobGroup,
localStateStore.getLocalRecoveryConfig());
} catch (IOException e) {
throw new TaskSubmissionException(e);
}
final JobManagerTaskRestore taskRestore = tdd.getTaskRestore();
final TaskStateManager taskStateManager =
new TaskStateManagerImpl(
jobId,
tdd.getExecutionAttemptId(),
localStateStore,
fileMergingSnapshotManagerClosable,
changelogStorage,
changelogStoragesManager,
taskRestore,
checkpointResponder);
MemoryManager memoryManager;
try {
memoryManager = taskSlotTable.getTaskMemoryManager(tdd.getAllocationId());
} catch (SlotNotFoundException e) {
throw new TaskSubmissionException("Could not submit task.", e);
}
Task task =
new Task(
jobInformation,
taskInformation,
tdd.getExecutionAttemptId(),
tdd.getAllocationId(),
tdd.getProducedPartitions(),
tdd.getInputGates(),
memoryManager,
sharedResources,
taskExecutorServices.getIOManager(),
taskExecutorServices.getShuffleEnvironment(),
taskExecutorServices.getKvStateService(),
taskExecutorServices.getBroadcastVariableManager(),
taskExecutorServices.getTaskEventDispatcher(),
externalResourceInfoProvider,
taskStateManager,
taskManagerActions,
inputSplitProvider,
checkpointResponder,
taskOperatorEventGateway,
aggregateManager,
classLoaderHandle,
fileCache,
taskManagerConfiguration,
taskMetricGroup,
partitionStateChecker,
MdcUtils.scopeToJob(jobId, getRpcService().getScheduledExecutor()),
channelStateExecutorFactoryManager.getOrCreateExecutorFactory(jobId));
taskMetricGroup.gauge(MetricNames.IS_BACK_PRESSURED, task::isBackPressured);
log.info(
"Received task {} ({}), deploy into slot with allocation id {}.",
task.getTaskInfo().getTaskNameWithSubtasks(),
tdd.getExecutionAttemptId(),
tdd.getAllocationId());
boolean taskAdded;
try {
taskAdded = taskSlotTable.addTask(task);
} catch (SlotNotFoundException | SlotNotActiveException e) {
throw new TaskSubmissionException("Could not submit task.", e);
}
if (taskAdded) {
task.startTaskThread();
setupResultPartitionBookkeeping(
tdd.getJobId(), tdd.getProducedPartitions(), task.getTerminationFuture());
return CompletableFuture.completedFuture(Acknowledge.get());
} else {
final String message =
"TaskManager already contains a task for id " + task.getExecutionId() + '.';
log.debug(message);
throw new TaskSubmissionException(message);
}
} catch (TaskSubmissionException e) {
return FutureUtils.completedExceptionally(e);
}
}
private void setupResultPartitionBookkeeping(
JobID jobId,
Collection<ResultPartitionDeploymentDescriptor> producedResultPartitions,
CompletableFuture<ExecutionState> terminationFuture) {
final Set<ResultPartitionID> partitionsRequiringRelease =
filterPartitionsRequiringRelease(producedResultPartitions)
.peek(
rpdd ->
partitionTracker.startTrackingPartition(
jobId, TaskExecutorPartitionInfo.from(rpdd)))
.map(ResultPartitionDeploymentDescriptor::getShuffleDescriptor)
.map(ShuffleDescriptor::getResultPartitionID)
.collect(Collectors.toSet());
final CompletableFuture<ExecutionState> taskTerminationWithResourceCleanupFuture =
terminationFuture.thenApplyAsync(
executionState -> {
if (executionState != ExecutionState.FINISHED) {
partitionTracker.stopTrackingPartitions(partitionsRequiringRelease);
}
return executionState;
},
getMainThreadExecutor());
taskResultPartitionCleanupFuturesPerJob.compute(
jobId,
(ignored, completableFutures) -> {
if (completableFutures == null) {
completableFutures = new ArrayList<>(4);
}
completableFutures.add(taskTerminationWithResourceCleanupFuture);
return completableFutures;
});
}
private Stream<ResultPartitionDeploymentDescriptor> filterPartitionsRequiringRelease(
Collection<ResultPartitionDeploymentDescriptor> producedResultPartitions) {
return producedResultPartitions.stream()
// only releaseByScheduler partitions require explicit release call
.filter(d -> d.getPartitionType().isReleaseByScheduler())
// partitions without local resources don't store anything on the TaskExecutor
.filter(d -> d.getShuffleDescriptor().storesLocalResourcesOn().isPresent());
}
@Override
public CompletableFuture<Acknowledge> cancelTask(
ExecutionAttemptID executionAttemptID, Time timeout) {
final Task task = taskSlotTable.getTask(executionAttemptID);
if (task != null) {
try (MdcCloseable ignored =
MdcUtils.withContext(MdcUtils.asContextData(task.getJobID()))) {
try {
task.cancelExecution();
return CompletableFuture.completedFuture(Acknowledge.get());
} catch (Throwable t) {
return FutureUtils.completedExceptionally(
new TaskException(
"Cannot cancel task for execution " + executionAttemptID + '.',
t));
}
}
} else {
final String message =
"Cannot find task to stop for execution " + executionAttemptID + '.';
log.debug(message);
return FutureUtils.completedExceptionally(new TaskException(message));
}
}
// ----------------------------------------------------------------------
// Partition lifecycle RPCs
// ----------------------------------------------------------------------
@Override
public CompletableFuture<Acknowledge> updatePartitions(
final ExecutionAttemptID executionAttemptID,
Iterable<PartitionInfo> partitionInfos,
Time timeout) {
final Task task = taskSlotTable.getTask(executionAttemptID);
if (task != null) {
for (final PartitionInfo partitionInfo : partitionInfos) {
// Run asynchronously because it might be blocking
FutureUtils.assertNoException(
CompletableFuture.runAsync(
() -> {
try {
if (!shuffleEnvironment.updatePartitionInfo(
executionAttemptID, partitionInfo)) {
log.debug(
"Discard update for input gate partition {} of result {} in task {}. "
+ "The partition is no longer available.",
partitionInfo
.getShuffleDescriptor()
.getResultPartitionID(),
partitionInfo.getIntermediateDataSetID(),
executionAttemptID);
}
} catch (IOException | InterruptedException e) {
log.error(
"Could not update input data location for task {}. Trying to fail task.",
task.getTaskInfo().getTaskName(),
e);
task.failExternally(e);
}
},