janusgraph does not re-check hostname/ip resoultion when re-opening graph

We run janusgraph with Casssandra in kubernetes. If the Cassandra container is deleted for whatever reason, it comes back with a new IP address.

janusgraph is configured to connect to Cassandra by a hostname my_cassandra. When we try to open the graph again after the ip address is changed, janusgraph continues to try to connect to the old ip address of Cassandra, it does not re-resolve the ip address of the hostname my_cassandra.

The issue names no files, tests, or entry points. Reproduce the failure by reopening a graph after the Cassandra container receives a new IP, then trace the graph-reopen connection path and verify that the hostname is resolved again so the graph connects to the new address.

Written by the indexing model from the issue text.