I just installed Hadoop single node, but when I run it by registering on localhost, it gives an error that it cannot make changes to the files as the permission is denied?
Have you followed all the steps suggested in: http://hadoop.apache.org/common/docs/current/single_node_setup.html ?
You can look at this: http://getsatisfaction.com/cloudera/topics/permission_denied_error_in_desktop
In addition, certain additional information will definitely help.
. , root. http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/
It seems that there are no permissions for the user in the directory containing the files
make sure the user you are logged in with is the owner of the Hadoop directory by running the ls -lacommand
ls -la
if the owner does not run the command chown -R hadoop user:group hadoopand it will work fine.
chown -R hadoop user:group hadoop
you can also follow the manual by michael noll
http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/