I've founded we have some items already set within hdfs-site.xml with different names that the ones indicated on hwx documents. Therefore:
1.- I would like to know the difference between each item.
2.- To know if it will be better to add them within the hdfs-site.xml along the existing settings already there?. I meant duplicate the values but with different names setings.
3.- To remove current setting and set the new ones (the ones indicated on the document).
For question 3 I would say this will depend on my organization requierements but I would like to read your ideas.
Current = nfs.kerberos.principal
Reccommended = dfs.nfsgateway.kerberos.principal
Current = nfs.keytab.file
Recommended = dfs.nfsgateway.keytab.file
We left the settings just as stated and cluster keeps working fine.
@Jorge Luis Hernandez Olmos I did some digging and found out that since hadoop 2.5 nfs params are not prefixed with dfs.
as for the nfs vs nfsgateway, I found this bug
https://issues.apache.org/jira/browse/HDFS-6181 - to me it seems horton copied that documentation and never fixed it