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.client.read.checkpoint;
  
  import java.util.HashSet;
  import java.util.Set;
  
  /** Checkpoint metadata interface for a partition reader. */
  public class PartitionReaderCheckpointMetadata {
    private final Set<Integer> returnedChunks;
  
    /** Create an instance of the checkpoint metadata. */
    public PartitionReaderCheckpointMetadata() {
      this.returnedChunks = new HashSet<>();
    }
  
    public void checkpoint(int chunkId) {
      returnedChunks.add(chunkId);
    }
  
    public boolean isCheckpointed(int chunkId) {
      return returnedChunks.contains(chunkId);
    }
  
    public Set<Integer> getReturnedChunks() {
      return returnedChunks;
    }
  }
  