SupportsConcurrentExecutionAttempts.java

/*
 * 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.api.common;

import org.apache.flink.annotation.PublicEvolving;

/**
 * The interface indicates that it supports multiple attempts executing at the same time.
 *
 * <p>Currently, the interface is used for speculative execution. If a sink implementation (SinkV2,
 * OutputFormat or SinkFunction) inherits this interface, the sink operator would be considered to
 * support speculative execution.
 */
@PublicEvolving
public interface SupportsConcurrentExecutionAttempts {}