5bd1980438
In a cluster of replicated live/backup pairs if a backup crashes and then its live crashes the cluster will retain the topology information of the live such that when the live server restarts it will check the cluster to see if its nodeID is present (which it will be) and then it will activate as a backup rather than a live. To prevent this situation an additional check is necessary to see if the server with the matching nodeID is actually active or not which is done by attempting to make a connection to it. |
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