我是hadoop的新手。我正在尝试在hdfs中创建一个目录,但我无法创建。在hadoop文件系统中创建目录
我已经登录到“hduser”因此我假设的/ home/hduser”预先存在作为Unix的FS,所以我尝试使用以下命令来创建Hadoop的目录。
[[email protected] ~]$ hadoop fs -mkdir /home/hduser/mydata/
14/12/03 15:04:53 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
mkdir: `/home/hduser/mydata/': No such file or directory
网上搜索后,我想可能hadoop不能理解“/ home/hduser”或者我在使用hadoop2,而mkdir不会像Unix命令“madir -p”(递归地)工作,因此我尝试创建“/ mydata”,但是没有
[[email protected] ~]$ hadoop fs -mkdir /mydata
14/12/03 15:09:26 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
mkdir: Cannot create directory /mydata. Name node is in safe mode.
我试着离开安全模式但仍然存在问题
[[email protected] ~]$ hdfs dfsadmin -safemode leave
14/12/03 15:09:13 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Safe mode is OFF
我也试过用“/ user/mydata”作为“/ user”是hadoop作为home的目录。
[[email protected] ~]$ hadoop fs -mkdir /user/mydata
14/12/03 15:36:20 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
mkdir: Cannot create directory /user/mydata. Name node is in safe mode.
现在如何进一步调试?
您的名字节点尚未离开安全mode.http://unmeshasreeveni.blogspot.in/2014/04/name-node-is-in-safe-模式如何对leave.html – 2014-12-03 10:12:08