content: /*
   * 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.celeborn.plugin.flink.fallback;
  
  import org.apache.flink.runtime.shuffle.JobShuffleContext;
  
  import org.apache.celeborn.client.LifecycleManager;
  import org.apache.celeborn.common.CelebornConf;
  
  /**
   * The shuffle fallback policy determines whether fallback to vanilla Flink built-in shuffle
   * implementation.
   */
  public interface ShuffleFallbackPolicy {
  
    /**
     * Returns whether fallback to vanilla flink built-in shuffle implementation.
     *
     * @param shuffleContext The job shuffle context of Flink.
     * @param celebornConf The configuration of Celeborn.
     * @param lifecycleManager The {@link LifecycleManager} of Celeborn.
     * @return Whether fallback to vanilla flink built-in shuffle implementation.
     */
    boolean needFallback(
        JobShuffleContext shuffleContext,
        CelebornConf celebornConf,
        LifecycleManager lifecycleManager);
  }
  