在cosmos.lab.fi-ware.org上的SafeModeException [英] SafeModeException at cosmos.lab.fi-ware.org
问题描述
根据维基百科
和via
ssh my_user@cosmos.lab.fi-ware.org
1）我意识到没有文件夹'/ user / my_user'，而是'/ home / my_user' 。为什么？
2）我正在尝试创建一个文件夹，但是我收到了SafeModeException：
hadoop fs -mkdir / home / my_user / test
mkdir：org.apache.hadoop.hdfs.server.namenode.SafeModeException：无法创建目录/ home / my_user / test。名称节点处于安全模式。
我试过了：
hadoop dfsadmin -safemode离开
结果：
safemode：org.apache.hadoop.security.AccessControlException：拒绝用户my_user的访问。需要超级用户权限
谢谢！
Pablo昨天由于硬盘空间不足而进入安全模式的Cosmos实例的Namenode。它现在应该是固定的，但在启用安全模式时，HDFS无法完成，包括您的用户帐户创建。
我已手动完成注册过程，尝试一下，让我知道是否还有问题（我还通过私人电子邮件回复了您，并提供了有关您用户的所有详细信息）。关于您尝试使用的Hadoop命令（离开安全模式并在/ user下创建一个文件夹），这些都是特权操作：）
According to the wiki
and via
ssh my_user@cosmos.lab.fi-ware.org
1) I realize that there is no folder '/user/my_user' but '/home/my_user'. Why? May I suposse that my user is not propertly created?
2) I am trying to create a folder, but I get the SafeModeException:
hadoop fs -mkdir /home/my_user/test
mkdir: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot create directory /home/my_user/test. Name node is in safe mode.
I have tried:
hadoop dfsadmin -safemode leave
with this result:
safemode: org.apache.hadoop.security.AccessControlException: Access denied for user my_user. Superuser privilege is required
Thanks!
Pablo, yesterday the Namenode of the Cosmos instance entered in safe mode due to the HDD was running out of space. It should be fixed now, but while the safe mode was enabled, nothing could be done with HDFS, including your user account creation.
I have completed the registration process manually, try it and let me know if something is still wrong (I also answered you by private email, with all the details regarding your user).
Regarding the Hadoop commands you tried (leaving safe mode and creating a folder under /user), these are privileged operations :)
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