hadoop put流程代码
hadoop fs -put xxxx解析命令FsShell类的main方法进入创建实例FsShell shell = newShellInstance();ToolRunner.run(shell, argv)进入FsShell的run方法先init方法，主要是commandFactory = new CommandFactory(getConf())Command instance = commandFactory.getInstance(cmd);instance.run(argv)
