Event received when the registered listener fails over to a different node.
Receiving this event indicates that a failure happened in the node where
the listener was registered in and another server has been selected for
installing the listener in. As a result of this failover, some events might
have been missed, hence, this event can be used to clear locally cached
data. After this failover event is received, the entire cache contents will
be iterated over and the client receives events on these contents, which
can be used to rebuild any locally built cache.
- Galder Zamarreño