Github user adamdecaf commented on the issue:
https://github.com/apache/curator/pull/208
Was this supposed to be backported to the 2.x series? We upgraded some
clients to 2.12.0 and ran into this.
https://github.com/apache/curator/blob/apache-curator-2.12.0/curator-x-discovery/src/main/java/org/apache/curator/x/discovery/details/JsonInstanceSerializer.java---
