任何人都可以为我提供hadoop文件shell命令到java类的映射吗？

Question

我是Hadoop的新手，正在开发Java API来管理HDFS中的文件，我正在寻找hadoop文件shell命令到java类的映射（种类）。

Answer 1

您在寻找这种地图信息吗？

每个shell命令的Java类：

factory.addClass(Merge.class, "-getmerge");
factory.addClass(Cp.class, "-cp");
factory.addClass(CopyFromLocal.class, "-copyFromLocal");
factory.addClass(CopyToLocal.class, "-copyToLocal");
factory.addClass(Get.class, "-get");
factory.addClass(Put.class, "-put");
factory.addClass(AppendToFile.class, "-appendToFile");

Answer 2

org.apache.hadoop.fs.shell.CopyCommands

class CopyCommands {  
  public static void registerCommands(CommandFactory factory) {
    factory.addClass(Merge.class, "-getmerge");
    factory.addClass(Cp.class, "-cp");
    factory.addClass(CopyFromLocal.class, "-copyFromLocal");
    factory.addClass(CopyToLocal.class, "-copyToLocal");
    factory.addClass(Get.class, "-get");
    factory.addClass(Put.class, "-put");
    factory.addClass(AppendToFile.class, "-appendToFile");
  }