eemario commented on code in PR #27306: URL: https://github.com/apache/flink/pull/27306#discussion_r2618303520
########## flink-runtime/src/main/java/org/apache/flink/runtime/application/AbstractApplication.java: ########## @@ -0,0 +1,213 @@ +/* + * 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.application; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.common.ApplicationID; +import org.apache.flink.api.common.ApplicationState; +import org.apache.flink.api.common.JobID; +import org.apache.flink.runtime.dispatcher.DispatcherGateway; +import org.apache.flink.runtime.messages.Acknowledge; +import org.apache.flink.runtime.rpc.FatalErrorHandler; +import org.apache.flink.util.concurrent.ScheduledExecutor; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.Serializable; +import java.util.Arrays; +import java.util.Collections; +import java.util.EnumMap; +import java.util.HashSet; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.Executor; + +/** Base class for all applications. */ +@Internal +public abstract class AbstractApplication implements Serializable { + + private static final Logger LOG = LoggerFactory.getLogger(AbstractApplication.class); + + private static final long serialVersionUID = 1L; + + private final ApplicationID applicationId; + + private ApplicationState applicationState; + + /** + * Timestamps (in milliseconds as returned by {@code System.currentTimeMillis()}) when the + * application transitioned into a certain status. The index into this array is the ordinal of + * the enum value, i.e. the timestamp when the application went into state "RUNNING" is at + * {@code timestamps[RUNNING.ordinal()]}. + */ + private final long[] statusTimestamps; + + private final Set<JobID> jobs = new HashSet<>(); + + public AbstractApplication(ApplicationID applicationId) { + this.applicationId = applicationId; + this.statusTimestamps = new long[ApplicationState.values().length]; + this.applicationState = ApplicationState.CREATED; + this.statusTimestamps[ApplicationState.CREATED.ordinal()] = System.currentTimeMillis(); + } + + /** + * Entry method to run the application asynchronously. + * + * <p>The returned CompletableFuture indicates that the execution request has been accepted and + * the application transitions to RUNNING state. + * + * <p><b>Note:</b> This method must be called on the main thread. Review Comment: The main thread refers to the main thread of the Dispatcher. Updated the comments to remove the ambiguity. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
