Examples of org.apache.hadoop.yarn.server.MiniYARNCluster$NodeManagerWrapper

org.apache.hadoop.yarn.server.MiniYARNCluster
Embedded Yarn minicluster for testcases that need to interact with a cluster.
In a real cluster, resource request matching is done using the hostname, and by default Yarn minicluster works in the exact same way as a real cluster.
If a testcase needs to use multiple nodes and exercise resource request matching to a specific node, then the property {@YarnConfiguration.RM_SCHEDULER_INCLUDE_PORT_IN_NODE_NAME} should be settrue in the configuration used to initialize the minicluster.
With this property set to true, the matching will be done using the hostname:port of the namenodes. In such case, the AM must do resource request using hostname:port as the location.

                config.set("yarn.log.dir", "/tmp/yarn-logs");
                dfsCluster = new MiniDFSCluster.Builder(config)
                                 .numDataNodes(1)
                                 .startupOption(StartupOption.FORMAT)
                                 .build();
                yarnCluster = new MiniYARNCluster("mongo-hadoop", 1, 1, 1);
                yarnCluster.init(config);


                URL url = Thread.currentThread().getContextClassLoader().getResource("yarn-site.xml");
                if (url == null) {
                    throw new RuntimeException("Could not find 'yarn-site.xml' dummy file in classpath");

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  public static void setup() throws InterruptedException, IOException {
    LOG.info("Starting up YARN cluster");
    conf.setInt("yarn.scheduler.fifo.minimum-allocation-mb", 128);
    conf.set("yarn.nodemanager.vmem-pmem-ratio", "20.0");
    if (yarnCluster == null) {
      yarnCluster = new MiniYARNCluster(TestKittenDistributedShell.class.getName(),
          1, 1, 1);
      yarnCluster.init(conf);
      yarnCluster.start();
      conf = yarnCluster.getConfig();
    }

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  @BeforeClass
  public static void setup() throws InterruptedException, IOException {
    LOG.info("Starting up YARN cluster");
    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB, 128);
    if (yarnCluster == null) {
      yarnCluster = new MiniYARNCluster(
          TestUnmanagedAMLauncher.class.getSimpleName(), 1, 1, 1);
      yarnCluster.init(conf);
      yarnCluster.start();
      //get the address
      Configuration yarnClusterConfig = yarnCluster.getConfig();

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    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB, 128);
    conf.setClass(YarnConfiguration.RM_SCHEDULER, 
        FifoScheduler.class, ResourceScheduler.class);
    conf.set("yarn.log.dir", "target");
    if (yarnCluster == null) {
      yarnCluster = new MiniYARNCluster(
        TestDistributedShell.class.getSimpleName(), 1, 1, 1, 1, true);
      yarnCluster.init(conf);
      yarnCluster.start();
      NodeManager  nm = yarnCluster.getNodeManager(0);
      waitForNMToRegister(nm);

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  @BeforeClass
  public static void setup() throws InterruptedException, IOException {
    LOG.info("Starting up YARN cluster");
    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB, 128);
    if (yarnCluster == null) {
      yarnCluster = new MiniYARNCluster(TestDistributedShell.class.getName(),
          1, 1, 1);
      yarnCluster.init(conf);
      yarnCluster.start();
    }
    try {

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