tillrohrmann commented on a change in pull request #9663:
[WIP][FLINK-12433][runtime] Implement DefaultScheduler stub
URL: https://github.com/apache/flink/pull/9663#discussion_r326085068
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/DefaultScheduler.java
##########
@@ -75,10 +137,281 @@ public DefaultScheduler(
slotRequestTimeout,
shuffleMaster,
partitionTracker);
+
+ this.restartBackoffTimeStrategy = restartBackoffTimeStrategy;
+ this.slotRequestTimeout = slotRequestTimeout;
+ this.slotProvider = slotProvider;
+ this.delayExecutor = delayExecutor;
+ this.userCodeLoader = userCodeLoader;
+ this.schedulingStrategyFactory =
checkNotNull(schedulingStrategyFactory);
+ this.failoverStrategyFactory =
checkNotNull(failoverStrategyFactory);
+ this.executionVertexOperations =
checkNotNull(executionVertexOperations);
+ this.executionVertexVersioner = executionVertexVersioner;
+ this.conditionalFutureHandlerFactory = new
ConditionalFutureHandlerFactory(executionVertexVersioner);
+ }
+
+ //
------------------------------------------------------------------------
+ // SchedulerNG
+ //
------------------------------------------------------------------------
+
+ @Override
+ public void startSchedulingInternal() {
+ initializeScheduling();
+ schedulingStrategy.startScheduling();
+ }
+
+ private void initializeScheduling() {
+ executionFailureHandler = new
ExecutionFailureHandler(failoverStrategyFactory.create(getFailoverTopology()),
restartBackoffTimeStrategy);
+ schedulingStrategy =
schedulingStrategyFactory.createInstance(this, getSchedulingTopology(),
getJobGraph());
+ executionSlotAllocator = new
DefaultExecutionSlotAllocator(slotProvider, getInputsLocationsRetriever(),
slotRequestTimeout);
+ setTaskFailureListener(new
UpdateTaskExecutionStateInDefaultSchedulerListener(this,
getJobGraph().getJobID()));
+ prepareExecutionGraphForScheduling();
+ }
+
+ @Override
+ public boolean updateTaskExecutionState(final TaskExecutionState
taskExecutionState) {
+ final Optional<ExecutionVertexID> executionVertexIdOptional =
getExecutionVertexId(taskExecutionState.getID());
+ if (executionVertexIdOptional.isPresent()) {
+ final ExecutionVertexID executionVertexId =
executionVertexIdOptional.get();
+ updateState(taskExecutionState);
+
schedulingStrategy.onExecutionStateChange(executionVertexId,
taskExecutionState.getExecutionState());
+ maybeHandleTaskFailure(taskExecutionState,
executionVertexId);
+ return true;
+ }
+
+ return false;
+ }
+
+ private void maybeHandleTaskFailure(final TaskExecutionState
taskExecutionState, final ExecutionVertexID executionVertexId) {
+ if (taskExecutionState.getExecutionState() ==
ExecutionState.FAILED) {
+ final Throwable error =
taskExecutionState.getError(userCodeLoader);
+ handleTaskFailure(executionVertexId, error);
+ }
+ }
+
+ private void handleTaskFailure(final ExecutionVertexID
executionVertexId, final Throwable error) {
+ final FailureHandlingResult failureHandlingResult =
executionFailureHandler.getFailureHandlingResult(executionVertexId, error);
+ maybeRestartTasks(failureHandlingResult);
+ }
+
+ private void maybeRestartTasks(final FailureHandlingResult
failureHandlingResult) {
+ if (failureHandlingResult.canRestart()) {
+ restartTasksWithDelay(failureHandlingResult);
+ } else {
+ failJob(failureHandlingResult.getError());
+ }
+ }
+
+ private void restartTasksWithDelay(final FailureHandlingResult
failureHandlingResult) {
+ final Set<ExecutionVertexID> verticesToRestart =
failureHandlingResult.getVerticesToRestart();
+
+ final Set<ExecutionVertexVersion> executionVertexVersions =
+ new
HashSet<>(executionVertexVersioner.recordVertexModifications(verticesToRestart).values());
+
+ final CompletableFuture<?> cancelFuture =
cancelTasksAsync(verticesToRestart);
+
+ delayExecutor.schedule(
+ () -> FutureUtils.assertNoException(
+
cancelFuture.handleAsync(restartTasksOrHandleError(executionVertexVersions),
getMainThreadExecutor())),
+ failureHandlingResult.getRestartDelayMS(),
+ TimeUnit.MILLISECONDS);
+ }
+
+ private BiFunction<Object, Throwable, Void>
restartTasksOrHandleError(final Set<ExecutionVertexVersion>
executionVertexVersions) {
+ return (Object ignored, Throwable throwable) -> {
+
+ if (throwable == null) {
+ final Set<ExecutionVertexID> verticesToRestart
=
executionVertexVersioner.getUnmodifiedExecutionVertices(executionVertexVersions);
+
schedulingStrategy.restartTasks(verticesToRestart);
+ } else {
+ failJob(throwable);
+ }
+ return null;
+ };
+ }
+
+ private CompletableFuture<?> cancelTasksAsync(final
Set<ExecutionVertexID> verticesToRestart) {
+ final List<CompletableFuture<?>> cancelFutures =
verticesToRestart.stream()
+ .map(this::cancelExecutionVertex)
+ .collect(Collectors.toList());
+
+ return FutureUtils.combineAll(cancelFutures);
}
+ private CompletableFuture<?> cancelExecutionVertex(final
ExecutionVertexID executionVertexId) {
+ return
executionVertexOperations.cancel(getExecutionVertex(executionVertexId));
+ }
+
+ @Override
+ public void scheduleOrUpdateConsumers(final ResultPartitionID
partitionId) {
+ final Optional<ExecutionVertexID> producerVertexId =
getExecutionVertexId(partitionId.getProducerId());
+ if (producerVertexId.isPresent()) {
+ updateConsumers(partitionId);
+
schedulingStrategy.onPartitionConsumable(producerVertexId.get(), partitionId);
+ }
+ }
+
+ //
------------------------------------------------------------------------
+ // SchedulerOperations
+ //
------------------------------------------------------------------------
+
@Override
- protected void startSchedulingInternal() {
- throw new UnsupportedOperationException();
+ public void allocateSlotsAndDeploy(final
Collection<ExecutionVertexDeploymentOption> executionVertexDeploymentOptions) {
+ final Map<ExecutionVertexID, ExecutionVertexDeploymentOption>
deploymentOptionsByVertex =
groupDeploymentOptionsByVertexId(executionVertexDeploymentOptions);
+ final Set<ExecutionVertexID> verticesToDeploy =
deploymentOptionsByVertex.keySet();
+ final Map<ExecutionVertexID, ExecutionVertexVersion>
requiredVersionByVertex =
executionVertexVersioner.recordVertexModifications(verticesToDeploy);
+
+ prepareToDeployVertices(verticesToDeploy);
+
+ final Collection<SlotExecutionVertexAssignment>
slotExecutionVertexAssignments =
allocateSlots(executionVertexDeploymentOptions);
+
+ final Collection<DeploymentHandle> deploymentHandles =
createDeploymentHandles(
+ requiredVersionByVertex,
+ deploymentOptionsByVertex,
+ slotExecutionVertexAssignments);
+
+ if (isDeployIndividually()) {
+ deployIndividually(deploymentHandles);
+ } else {
+ waitForAllSlotsAndDeploy(deploymentHandles);
+ }
+ }
+
+ private static Map<ExecutionVertexID, ExecutionVertexDeploymentOption>
groupDeploymentOptionsByVertexId(
+ final Collection<ExecutionVertexDeploymentOption>
executionVertexDeploymentOptions) {
+ return
executionVertexDeploymentOptions.stream().collect(Collectors.toMap(
+
ExecutionVertexDeploymentOption::getExecutionVertexId,
+ Function.identity()));
+ }
+
+ private void prepareToDeployVertices(final Set<ExecutionVertexID>
verticesToDeploy) {
Review comment:
Me neither. Marked this conversation as resolved.
----------------------------------------------------------------
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
