我正在尝试在hdfs中格式化namenode，但说：权限被拒绝
[英]I am trying to format namenode in hdfs but says: permission denied
问题描述
I am trying to format namenode . 
我正在尝试格式化namenode。 For this I have tried. 为此，我尝试了。
hduser@Ubuntu:/usr/hadoop/hadoop-2.7.1$ bin/hdfs namenode -format
It says: 它说：
bin/hdfs: line 304: /root/software/jdk1.8.0_45/bin/java: Permission denied
bin/hdfs: line 304: exec: /root/software/jdk1.8.0_45/bin/java: cannot execute: Permission denied
1 个解决方案
解决方案1
1 2015-07-31 23:59:01
So, you have an odd install. 因此，您的安装很奇怪。 It looks like you are trying to reference a JDK installation that is installed to /root (this is very unusual). 似乎您正在尝试引用安装到/ root的JDK安装（这是非常不寻常的）。 You are getting permission denied because you are trying to run a command as a non-privileged that depends on that JDK installation that your user can't access. 由于您试图以非特权方式运行命令，因此该用户被拒绝权限，该命令取决于用户无法访问的JDK安装。
Running as root would probably make this error go away but you probably have an unorthodox installation that might need to be reconsidered. 以root身份运行可能会消除此错误，但是您可能需要重新考虑非常规的安装。
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