Github user Randgalt commented on the pull request:
https://github.com/apache/curator/pull/17#issuecomment-50918629
Imagine a scenario where there is a temporary connection problem. Curator
will send SUSPENDED. If the connect gets repaired and the session survives,
Curator will send RECONNECTED. At nearly the same time, some of the watchers
might get called due to watched changes. Thus, a method like refreshData()
might get called simultaneously by two threads.
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