Is it possible to configure hdfs in a federation mode and in an HA mode in the same time?

[Alexandr Porunov]

Hello all,

I don't understand if it possible to configure HDFS in both modes in the
same time. Does it make sense? Can somebody show a simple configuration of
HDFS in both modes? (nameNode1, nameNode2, nameNodeStandby1,
nameNodeStandby2)

Sincerely,
Alexandr