azagrebin commented on a change in pull request #12375: URL: https://github.com/apache/flink/pull/12375#discussion_r438636756
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/BulkSlotProviderImpl.java ########## @@ -0,0 +1,204 @@ +/* + * 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.jobmaster.slotpool; + +import org.apache.flink.api.common.time.Time; +import org.apache.flink.runtime.clusterframework.types.ResourceProfile; +import org.apache.flink.runtime.clusterframework.types.SlotProfile; +import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor; +import org.apache.flink.runtime.concurrent.FutureUtils; +import org.apache.flink.runtime.jobmaster.SlotInfo; +import org.apache.flink.runtime.jobmaster.SlotRequestId; +import org.apache.flink.util.clock.SystemClock; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.List; +import java.util.Optional; +import java.util.Set; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.TimeoutException; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +import static org.apache.flink.util.Preconditions.checkNotNull; + +/** + * Default implementation of {@link BulkSlotProvider}. + */ +class BulkSlotProviderImpl implements BulkSlotProvider { + + private static final Logger LOG = LoggerFactory.getLogger(BulkSlotProviderImpl.class); + + private ComponentMainThreadExecutor componentMainThreadExecutor; + + private final SlotSelectionStrategy slotSelectionStrategy; + + private final SlotPool slotPool; + + private final PhysicalSlotRequestBulkTracker slotRequestBulkTracker; + + BulkSlotProviderImpl(final SlotSelectionStrategy slotSelectionStrategy, final SlotPool slotPool) { + this.slotSelectionStrategy = checkNotNull(slotSelectionStrategy); + this.slotPool = checkNotNull(slotPool); + + this.slotRequestBulkTracker = new PhysicalSlotRequestBulkTracker( + this::getAllSlotInfos, + SystemClock.getInstance()); + + this.componentMainThreadExecutor = new ComponentMainThreadExecutor.DummyComponentMainThreadExecutor( + "Scheduler is not initialized with proper main thread executor. " + + "Call to BulkSlotProvider.start(...) required."); + } + + @Override + public void start(final ComponentMainThreadExecutor mainThreadExecutor) { + this.componentMainThreadExecutor = mainThreadExecutor; + } + + @Override + public void cancelSlotRequest(SlotRequestId slotRequestId, Throwable cause) { + componentMainThreadExecutor.assertRunningInMainThread(); + + slotPool.releaseSlot(slotRequestId, cause); + } + + @Override + public CompletableFuture<Collection<PhysicalSlotRequest.Result>> allocatePhysicalSlots( + final Collection<PhysicalSlotRequest> physicalSlotRequests, + final Time timeout) { + + componentMainThreadExecutor.assertRunningInMainThread(); + + LOG.debug("Received {} slot requests.", physicalSlotRequests.size()); + + final PhysicalSlotRequestBulk slotRequestBulk = new PhysicalSlotRequestBulk(physicalSlotRequests); + + final List<CompletableFuture<PhysicalSlotRequest.Result>> resultFutures = new ArrayList<>(physicalSlotRequests.size()); + for (PhysicalSlotRequest request : physicalSlotRequests) { + final CompletableFuture<PhysicalSlotRequest.Result> resultFuture = + allocatePhysicalSlot(request).thenApply(result -> { + slotRequestBulk.markRequestFulfilled( + result.getSlotRequestId(), + result.getPhysicalSlot().getAllocationId()); + + return result; + }); + resultFutures.add(resultFuture); + } + + slotRequestBulkTracker.track(slotRequestBulk); + schedulePendingRequestBulkTimeoutCheck(slotRequestBulk, timeout); + + return FutureUtils.combineAll(resultFutures) + .whenComplete((ignore, throwable) -> slotRequestBulkTracker.untrack(slotRequestBulk)); + } + + private CompletableFuture<PhysicalSlotRequest.Result> allocatePhysicalSlot( + final PhysicalSlotRequest physicalSlotRequest) { + + final SlotRequestId slotRequestId = physicalSlotRequest.getSlotRequestId(); + final SlotProfile slotProfile = physicalSlotRequest.getSlotProfile(); + final ResourceProfile resourceProfile = slotProfile.getPhysicalSlotResourceProfile(); + + LOG.debug("Received slot request [{}] with resource requirements: {}", slotRequestId, resourceProfile); + + final Optional<PhysicalSlot> availablePhysicalSlot = tryAllocateFromAvailable(slotRequestId, slotProfile); + + final CompletableFuture<PhysicalSlot> slotFuture; + if (availablePhysicalSlot.isPresent()) { + slotFuture = CompletableFuture.completedFuture(availablePhysicalSlot.get()); + } else if (physicalSlotRequest.willSlotBeOccupiedIndefinitely()) { + slotFuture = slotPool.requestNewAllocatedSlot( + slotRequestId, + resourceProfile, + null); + } else { + slotFuture = slotPool.requestNewAllocatedBatchSlot( + slotRequestId, + resourceProfile); + } Review comment: I meant only a private helper method in `BulkSlotProviderImpl` :) it is a nit anyways ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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