Cloudera Docs

Setting the owner and permissions of /user/yarn

If you want to add a VPC or Compute cluster after migration, ensure that the correct owner and permissions are set for /user/yarn in HDFS.

If either the owner or the permissions of /user/yarn is set incorrectly, you can encounter errors when trying to add a VPC or Compute cluster.

  • You have permission to impersonate a hdfs user.
  • If you use Custom Service Accounts, add it to the supergroup group.
  1. SSH to a cluster node
  2. Change the owner of /user/yarn:
    If you do not use Custom Service Accounts, change the owner to hdfs:supergroup:
    sudo -u hdfs hdfs dfs -chown hdfs:supergroup /user/yarn
    If you use Custom Service Accounts, change the owner to ***HDFS CUSTOM USER***:supergroup:
    sudo -u hdfs hdfs dfs -chown ***HDFS CUSTOM USER***:supergroup /user/yarn
  3. Change the permissions of /user/yarn to drwxr-xr-x: 
    sudo -u hdfs hdfs dfs -chmod 755 /user/yarn