Github user Randgalt commented on the pull request:
https://github.com/apache/curator/pull/17#issuecomment-50798327
I need to spend more time on this, but I'm suspecting that the refresh*()
and was*() methods of TreeNode need to be synchronized. These methods can be
called from the watcher/async callbacks as well as Curator's connection state
listener callback. The watcher/async are from a single thread in ZK, but
Curator's connection state listener callback is a different thread. Thus, these
methods could be called at the same time from two threads (via
wasReconnected()).
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