hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDatanodeLayoutUpgrade.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 org.apache.hadoop.conf.Configuration;
import org.junit.Test;

import java.io.File;
import java.io.IOException;

public class TestDatanodeLayoutUpgrade {
  private static final String HADOOP_DATANODE_DIR_TXT =
      "hadoop-datanode-dir.txt";
  private static final String HADOOP24_DATANODE = "hadoop-24-datanode-dir.tgz";

  @Test
  // Upgrade from LDir-based layout to block ID-based layout -- change described
  // in HDFS-6482
  public void testUpgradeToIdBasedLayout() throws IOException {
    TestDFSUpgradeFromImage upgrade = new TestDFSUpgradeFromImage();
    upgrade.unpackStorage(HADOOP24_DATANODE, HADOOP_DATANODE_DIR_TXT);
    Configuration conf = new Configuration(TestDFSUpgradeFromImage.upgradeConf);
    conf.set(DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY,
        System.getProperty("test.build.data") + File.separator +
            "dfs" + File.separator + "data");
    conf.set(DFSConfigKeys.DFS_NAMENODE_NAME_DIR_KEY,
        System.getProperty("test.build.data") + File.separator +
            "dfs" + File.separator + "name");
    upgrade.upgradeAndVerify(new MiniDFSCluster.Builder(conf).numDataNodes(1)
    .manageDataDfsDirs(false).manageNameDfsDirs(false));
  }
}