Since its not super-clear from the description text, I am assuming you have an storage solution mountable via NFS, and you'd like to use this storage directly instead of running HDFS on disks. While it may work to some degree, with the file:/// URIs pointing to the NFS location as its root in all relevant path configurations, I'd strongly recommend against this as NFS is not designed for the style of workload that YARN/etc. run, and there'll be numerous consistency problems too. Have you thought of using alternative, but proper distributed storage systems? S3 for example has good integration with CDH. ... View more

generally its not good idea to couple it , as long as you have your nfs gateway role on your host you could download your files to local system and push back vice versa . is there any particular use case that requires your files to be in local file system ?  ... View more