https://community.cloudera.com/t5/Support-Questions/How-to-increase-DFS-space-on-existing-cluster/m-p/187842#M149943 <P><A rel="user" href="https://community.cloudera.com/users/18739/sysadmin.html" nodeid="18739">@sysadmin CreditVidya</A> Assuming you are referring to 'Non DFS Used:' in the NameNode UI page, which is the total across the whole cluster, and could be in TB's depending the size of your total storage. ALSO, that number refers to 'How much configured DFS capacity are occupied by non dfs use', here is a good article around it:</P><P><A href="https://stackoverflow.com/questions/18477983/what-exactly-non-dfs-used-means">https://stackoverflow.com/questions/18477983/what-exactly-non-dfs-used-means</A></P><P>Hope that helps.</P> Tue, 18 Jul 2017 20:51:11 GMT dsun 2017-07-18T20:51:11Z