tillrohrmann commented on a change in pull request #7662: [FLINK-10431] Extraction of scheduling-related code from SlotPool into preliminary Scheduler (rebased) URL: https://github.com/apache/flink/pull/7662#discussion_r256342262
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/Scheduler.java ########## @@ -0,0 +1,519 @@ +/* + * 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.SlotProfile; +import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor; +import org.apache.flink.runtime.concurrent.FutureUtils; +import org.apache.flink.runtime.instance.SlotSharingGroupId; +import org.apache.flink.runtime.jobmanager.scheduler.CoLocationConstraint; +import org.apache.flink.runtime.jobmanager.scheduler.Locality; +import org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException; +import org.apache.flink.runtime.jobmanager.scheduler.ScheduledUnit; +import org.apache.flink.runtime.jobmaster.LogicalSlot; +import org.apache.flink.runtime.jobmaster.SlotContext; +import org.apache.flink.runtime.jobmaster.SlotInfo; +import org.apache.flink.runtime.jobmaster.SlotOwner; +import org.apache.flink.runtime.jobmaster.SlotRequestId; +import org.apache.flink.util.AbstractID; +import org.apache.flink.util.FlinkException; +import org.apache.flink.util.Preconditions; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.annotation.Nonnull; +import javax.annotation.Nullable; + +import java.util.Collection; +import java.util.Collections; +import java.util.Map; +import java.util.Objects; +import java.util.Optional; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.CompletionException; + +/** + * Scheduler that assigns tasks to slots. This class is currently work in progress, comments will be updated as we + * move forward. + */ +public class Scheduler implements SlotProvider, SlotOwner { + + /** Logger */ + private final Logger log = LoggerFactory.getLogger(getClass()); + + /** Strategy that selects the best slot for a given slot allocation request. */ + @Nonnull + private final SlotSelectionStrategy slotSelectionStrategy; + + /** The slot pool from which slots are allocated. */ + @Nonnull + private final SlotPool slotPool; + + /** Executor for running tasks in the job master's main thread. */ + @Nonnull + private ComponentMainThreadExecutor componentMainThreadExecutor; Review comment: I'll revisit this part on the second pass and try to make up my mind ;-) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on 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
