The failover-manager-class Element
It specifies which class should be used to handle the failover. This is called to recover a desktop, when ZK cannot locate the desktop. The class must have a default constructor (without any argument), and implement the FailoverManager interface.
In most cases, you don't need to provide any implementation. Rather, you can let Web servers to handle failover and clustering for you by specifying the SerializableUiFactory class in the
ui-factory-class element as described above.