Support Questions

Find answers, ask questions, and share your expertise
Announcements
Celebrating as our community reaches 100,000 members! Thank you!

Permission denied: user=root, access=WRITE, inode="/user":hdfs:supergroup:dr

avatar
New Contributor

when i use hdfs comands it display errors:

 

hadoop fs -mkdir /user/,,myfile,, or   "hadoop fs -put myfile.txt /user/,,/,,"  

hadoop will display"Permission denied: user=root, access=WRITE, inode="/user":hdfs:supergroup:dr,,,"and so on,why?who can help me?

1 ACCEPTED SOLUTION

avatar
Super Collaborator
Hey,

The /user/ directory is owned by "hdfs" with 755 permissions. As a result only hdfs can write to that directory. Unlike unix/linux, hdfs is the superuser and not root. So you would need to do this:

sudo -u hdfs hadoop fs -mkdir /user/,,myfile,,
sudo -u hdfs hadoop fs -put myfile.txt /user/,,/,,

If you want to create a home directory for root so you can store files in his directory, do:

sudo -u hdfs hadoop fs -mkdir /user/root
sudo -u hdfs hadoop fs -chown root /user/root

Then as root you can do "hadoop fs -put file /user/root/".

Hope this helps.

Chris

View solution in original post

12 REPLIES 12

avatar
New Contributor

Still cant copy files to the folder under user.

avatar
Champion

@Pandeyg2106 could you let us know the error and the user you are firing 

avatar
New Contributor
export HADOOP_USER_NAME=hdfs