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.service.deploy.worker.storage;
  
  import java.io.IOException;
  import java.util.concurrent.atomic.AtomicInteger;
  import java.util.concurrent.atomic.AtomicReference;
  
  public class FlushNotifier {
    final AtomicInteger numPendingFlushes = new AtomicInteger();
    final AtomicReference<IOException> exception = new AtomicReference<>();
  
    void setException(IOException e) {
      exception.set(e);
    }
  
    boolean hasException() {
      return exception.get() != null;
    }
  
    void checkException() throws IOException {
      IOException e = exception.get();
      if (e != null) {
        throw e;
      }
    }
  }
  