import org.apache.hadoop.security.authorize.HadoopPolicyProvider; //导入依赖的package包/类
public void setUp() throws Exception {
  // Read the testConfig.xml file
  readTestConfigFile();
  
  // Start up the mini dfs cluster
  boolean success = false;
  conf = new Configuration();
  conf.setClass(PolicyProvider.POLICY_PROVIDER_CONFIG,
                HadoopPolicyProvider.class, PolicyProvider.class);
  conf.setBoolean(ServiceAuthorizationManager.SERVICE_AUTHORIZATION_CONFIG, 
                  true);

  dfsCluster = new MiniDFSCluster(conf, 1, true, null);
  namenode = conf.get("fs.default.name", "file:///");
  clitestDataDir = new File(TEST_CACHE_DATA_DIR).
    toURI().toString().replace(' ', '+');
  username = System.getProperty("user.name");

  FileSystem fs = dfsCluster.getFileSystem();
  assertTrue("Not a HDFS: "+fs.getUri(),
             fs instanceof DistributedFileSystem);
  dfs = (DistributedFileSystem) fs;
  
   // Start up mini mr cluster
  JobConf mrConf = new JobConf(conf);
  mrCluster = new MiniMRCluster(1, dfsCluster.getFileSystem().getUri().toString(), 1, 
                         null, null, mrConf);
  jobtracker = mrCluster.createJobConf().get("mapred.job.tracker", "local");

  success = true;

  assertTrue("Error setting up Mini DFS & MR clusters", success);
}
 

import org.apache.hadoop.security.authorize.HadoopPolicyProvider; //导入依赖的package包/类
@Before
public void setUp() throws Exception {
  super.setUp();
  conf.setClass(PolicyProvider.POLICY_PROVIDER_CONFIG,
      HadoopPolicyProvider.class, PolicyProvider.class);
  mrConf = new JobConf(conf);
  mrCluster = new MiniMRCluster(1, dfsCluster.getFileSystem().getUri().toString(), 1, 
                         null, null, mrConf);
  jobtracker = mrCluster.createJobConf().get(JTConfig.JT_IPC_ADDRESS, "local");
}