NFS does not allow other user to access a file with 644 permission and a parent with 711 access right.
Steps to reproduce:
1. Create a directory /user/userX with 711 permissions
2. Upload a file at /user/userX/TestFile with 644 as userX
3. Try to access WriteTest as userY.
HDFS will allow to read TestFile.
NFS will not allow to read TestFile.