Hadoop 2.2.0源码浏览：4. NodeManager

基本流程

  public static void main(String[] args) {
    Thread.setDefaultUncaughtExceptionHandler(new YarnUncaughtExceptionHandler());
    StringUtils.startupShutdownMessage(NodeManager.class, args, LOG);
    NodeManager nodeManager = new NodeManager();
    Configuration conf = new YarnConfiguration();
    setHttpPolicy(conf);
    nodeManager.initAndStartNodeManager(conf, false);

  }

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结构

继承自CompositeService 

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ServiceInit(conf):