- Node 3 leaves the cluster or fails.
- Node 1 re-organizes the replicas of the session sessions it manages, e.g. yellow.
- Node 1 triggers a re-election of the nodes which should host the replicas of yellow.
- The replication strategy decides to create a new replica of yellow on Node 4. The replica currently on Node 2 is untouched.
- Node 1 replicates to Node 4 yellow.