如何在hadoop中显示hdfs根目录？

Question

我使用hadoop 2.8.1，根据一些参考（很多书和其他在线论坛）告诉我在哪里可以使用'hadoop fs -ls /'来查找hdfs文件系统根目录。但是当我键入该命令时，终端显示本地目录但不显示hdfs root。

这有什么问题，提前谢谢。

Answer 1

If you can execute hadoop version command and it returns correct information, it means that Hadoop was installed good.

I think there might be a problem with HDFS configuration. Try this:

1. Locate core-site.xml file in your local file system. It should be located in /etc/hadoop/conf directory.

2. Open core-site.xml file and locate this property:

   <property>
        <name>fs.defaultFS</name>
        <value>hdfs://<name-of-your-host>:8020</value>
        <final>true</final>
   </property>
   

3. I suppose name parameter is wrong. You have to identify the address on which HDFS is running and update it in core-site.xml.