ZFS Storage Appliance may hit 100% CPU on Linux due to ungraceful shutdown

Do not miss out on My Oracle Support note "ZFS Storage Appliance (ZFSSA) Software 2013.*.*.* May Experience 100% CPU Utilization With Linux Clients Using kernel-uek-2.6.39-400.247.1 or Earlier" via document ID 2091319.1 if you are on either one of these versions of the application as NFSv4 protocol states are lost and error messages are reported until resolved!