To my knwoledge this strange uid/gid is due to NFS4 design where it doesn't sends user/group names in nfs calls and uses only uid/gid without any domain name (check the netapp library for TR on NFS4)
To solve the issue go through this checklist.
Have you configured LDAP on your filer and unix systems?
What is the nfs domain value on filer and does it matches with your unix system?
Does your ldap query on filer and unix maps with same uid/gid to name?
If you don't have LDAP configured you can also use /etc/password file on filer to add UID/GID details.