This is less a question of ephemeral node behavior and more a question on how to properly watch ZNodes. Unfortunately I don't know the C library at all (it looks like that's what you're using). I can only say that writing code that correctly watches a ZNode is not trivial. Of course, there may be a bug in the C lib - I know it's not maintained to the same level as the Java lib.
> On May 2, 2018, at 12:11 PM, Pramod Srinivasan <pra...@juniper.net> wrote: > > any thoughts on this? > > On 5/1/18, 1:43 PM, "Pramod Srinivasan" <pra...@juniper.net> wrote: > > Hello Everyone, > > Can someone help me rationalize the behavior I see? > > 1) Process A is watching node /a > 2) Process B and Process C add ephemeral nodes, say /a/b and /a/c > 3) Process B and Process C close their session and Process A gets a > ZOO_CHILD_EVENT event when b and c goes away. > 4) In the context of ZOO_CHILD_EVENT, Process A does a zoo_wget_children > for “/a” and find its empty, but when it tries to delete “/a”, it finds that > it is not empty and zoo_wget_children again returns no children. > > How can get_children return no children for a znode and a remove of the > znode fail with not empty? It looks like there is a relation with ephemeral > nodes and Follower/Leader behavior, don’t understand this enough to make sense > > Thanks, > Pramod > >
