branch-2.0.4-alpha/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestParallelLocalRead.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.hdfs;

import java.io.IOException;

import org.apache.hadoop.security.UserGroupInformation;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

public class TestParallelLocalRead extends TestParallelReadUtil {

  @BeforeClass
  static public void setupCluster() throws Exception {
    HdfsConfiguration conf = new HdfsConfiguration();

    conf.setBoolean(DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_KEY, true);
    conf.setBoolean(DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_KEY,
        false);
    conf.set(DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY,
        UserGroupInformation.getCurrentUser().getShortUserName());

    setupCluster(1, conf);
  }

  @AfterClass
  static public void teardownCluster() throws Exception {
    TestParallelReadUtil.teardownCluster();
  }

  /**
   * Do parallel read several times with different number of files and threads.
   *
   * Note that while this is the only "test" in a junit sense, we're actually
   * dispatching a lot more. Failures in the other methods (and other threads)
   * need to be manually collected, which is inconvenient.
   */
  @Test
  public void testParallelReadCopying() throws IOException {
    runTestWorkload(new CopyingReadWorkerHelper());
  }

  @Test
  public void testParallelReadByteBuffer() throws IOException {
    runTestWorkload(new DirectReadWorkerHelper());
  }

  @Test
  public void testParallelReadMixed() throws IOException {
    runTestWorkload(new MixedWorkloadHelper());
  }
}