StefanRRichter commented on a change in pull request #7568: [FLINK-11417] Make access to ExecutionGraph single threaded from JobMaster main thread URL: https://github.com/apache/flink/pull/7568#discussion_r250974416
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/concurrent/ScheduledFutureAdapter.java ########## @@ -0,0 +1,92 @@ +/* + * 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.concurrent; + +import javax.annotation.Nonnull; + +import java.util.concurrent.Delayed; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.Future; +import java.util.concurrent.ScheduledFuture; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.TimeoutException; + +/** + * Adapter from {@link Future} to {@link ScheduledFuture}. This enriches the basic future with scheduling information. + * @param <V> value type of the future. + */ +public class ScheduledFutureAdapter<V> implements ScheduledFuture<V> { Review comment: I think, in general, this is hardly possible because it means that we need to consider `delegate` as well in the `compareTo` method as a tie-breaker to match it with `equals` because I assume an equality check should not ignore the delegate future. However, I see no way to also create a fixed, collision free ordering on objects of type `Future`. So this might be a place where the `not required` applies? ---------------------------------------------------------------- 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: [email protected] With regards, Apache Git Services
