import org.apache.hadoop.yarn.ipc.HadoopYarnProtoRPC; //导入依赖的package包/类
@Test
public void testHadoopProtoRPC() throws Exception {
  test(HadoopYarnProtoRPC.class.getName());
}
 

import org.apache.hadoop.yarn.ipc.HadoopYarnProtoRPC; //导入依赖的package包/类
@Test
public void testHadoopProtoRPCTimeout() throws Exception {
  testRPCTimeout(HadoopYarnProtoRPC.class.getName());
}
 

import org.apache.hadoop.yarn.ipc.HadoopYarnProtoRPC; //导入依赖的package包/类
@Test(timeout = 15000)
public void testSlowNM() throws Exception {

  conf = new Configuration();
  int maxAttempts = 1;
  conf.setInt(MRJobConfig.MAP_MAX_ATTEMPTS, maxAttempts);
  conf.setBoolean(MRJobConfig.JOB_UBERTASK_ENABLE, false);
  // set timeout low for the test
  conf.setInt("yarn.rpc.nm-command-timeout", 3000);
  conf.set(YarnConfiguration.IPC_RPC_IMPL, HadoopYarnProtoRPC.class.getName());
  YarnRPC rpc = YarnRPC.create(conf);
  String bindAddr = "localhost:0";
  InetSocketAddress addr = NetUtils.createSocketAddr(bindAddr);
  NMTokenSecretManagerInNM tokenSecretManager =
      new NMTokenSecretManagerInNM();
  MasterKey masterKey = Records.newRecord(MasterKey.class);
  masterKey.setBytes(ByteBuffer.wrap("key".getBytes()));
  tokenSecretManager.setMasterKey(masterKey);
  conf.set(CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHENTICATION,
    "token");
  server =
      rpc.getServer(ContainerManagementProtocol.class,
        new DummyContainerManager(), addr, conf, tokenSecretManager, 1);
  server.start();

  MRApp app = new MRAppWithSlowNM(tokenSecretManager);

  try {
  Job job = app.submit(conf);
  app.waitForState(job, JobState.RUNNING);

  Map<TaskId, Task> tasks = job.getTasks();
  Assert.assertEquals("Num tasks is not correct", 1, tasks.size());

  Task task = tasks.values().iterator().next();
  app.waitForState(task, TaskState.SCHEDULED);

  Map<TaskAttemptId, TaskAttempt> attempts = tasks.values().iterator()
      .next().getAttempts();
    Assert.assertEquals("Num attempts is not correct", maxAttempts,
        attempts.size());

  TaskAttempt attempt = attempts.values().iterator().next();
    app.waitForInternalState((TaskAttemptImpl) attempt,
        TaskAttemptStateInternal.ASSIGNED);

  app.waitForState(job, JobState.FAILED);

  String diagnostics = attempt.getDiagnostics().toString();
  LOG.info("attempt.getDiagnostics: " + diagnostics);

    Assert.assertTrue(diagnostics.contains("Container launch failed for "
        + "container_0_0000_01_000000 : "));
    Assert
        .assertTrue(diagnostics
            .contains("java.net.SocketTimeoutException: 3000 millis timeout while waiting for channel"));

  } finally {
    server.stop();
  app.stop();
}
}