How many ways to deploy at multi datacenter for backup?
From my point view:
1. use observer
use only 1 ensemble
one datatcenter as main datacenter with leader and follower
other datacenters only with 3 observers
When main datacenter crash, select one datacenter as new main
datacenter, and convert observers to leader/follower manually.
2. sync data at app level
use multi ensembles for each datacenter
sync data at app level, and app make sure no data conflict between
ensembles.
Is there any other way to deploy multi datacenter for backup?
At last, I notice issue ZOOKEEPER-892 discontinue, why ? And zoorepl is
suitable for multi datacenter for buckup?
