hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3ADelayedFNF.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.hadoop.fs.s3a;

import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.contract.ContractTestUtils;
import org.apache.hadoop.test.LambdaTestUtils;
import org.junit.Test;

import java.io.FileNotFoundException;
import java.util.concurrent.Callable;

/**
 * Tests behavior of a FileNotFound error that happens after open(), i.e. on
 * the first read.
 */
public class ITestS3ADelayedFNF extends AbstractS3ATestBase {


  /**
   * See debugging documentation
   * <a href="https://cwiki.apache.org/confluence/display/HADOOP/S3A%3A+FileNotFound+Exception+on+Read">here</a>.
   * @throws Exception
   */
  @Test
  public void testNotFoundFirstRead() throws Exception {
    FileSystem fs = getFileSystem();
    Path p = path("some-file");
    ContractTestUtils.createFile(fs, p, false, new byte[] {20, 21, 22});

    final FSDataInputStream in = fs.open(p);
    assertDeleted(p, false);

    // This should fail since we deleted after the open.
    LambdaTestUtils.intercept(FileNotFoundException.class,
        new Callable<Integer>() {
          @Override
          public Integer call() throws Exception {
            return in.read();
          }
        });
  }

}