I am wondering what guarantees (if any) zookeeper provides for reliable 
messaging for operation return codes up to a session timeout.  Basically, I 
would like to know whether a zookeeper client can rely on observing the return 
code for a successful operation which creates an ephemeral (or ephemeral 
sequential) znode -or- have a guarantee that its session was timed out and the 
ephemeral znode destroyed.  That is, does zookeeper provide guaranteed delivery 
of the operation return code unless the session is invalidated by a timeout?


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