Yes, you need a session to create the TTL node. I believe discussion about needing a session to create the node is beyond the scope of this issue and should be addressed by a new Jira issue. It doesn’t affect the utility of TTL nodes that you must first have a ZK session. Users who no longer want a session can merely close the ZK handle after creating the TTL node.
-Jordan > On Aug 30, 2016, at 7:41 AM, Flavio Junqueira <f...@apache.org> wrote: > > >> On 29 Aug 2016, at 19:51, Jordan Zimmerman <jor...@jordanzimmerman.com> >> wrote: >> >>> On the server side, we already have a mechanism to expire sessions, do we a >>> separate scheme to expire TTL nodes or can we use the same mechanism? Does >>> it make sense to consider a TTL node as a degenerate case of a session in >>> which I have a single ephemeral node? My recollection is that it currently >>> uses the container manager instead. >> >> The TTL implementation I did takes advantage of the Container node feature. >> A TTL node is a variation of a container node. It doesn’t require a session >> (like any persistent node). >> > > It doesn't require a session, but the client has no way to create such a TTL > node without creating a session first, right? You need the zk handle, which > has a session associated, to create a TTL node as I understand it. > > -Flavio >
