Could someone please help me understand the implications of the upgrade? As far as I understood this upgrade would only affect users that have a zookeeper shared across multiple services, some of which require ZK 3.4-? A workaround for those users would be to run two ZKs with different versions, eventually deprecating old ZK, correct?
If that is the only limitation, I'm +1 for the proposal since ZK 3.4 is already EOL. How are K8s users affected? Best, Arvid On Mon, Dec 6, 2021 at 2:00 PM Chesnay Schepler <ches...@apache.org> wrote: > ping @users; any input on how this would affect you is highly appreciated. > > On 25/11/2021 22:39, Chesnay Schepler wrote: > > I included the user ML in the thread. > > > > @users Are you still using Zookeeper 3.4? If so, were you planning to > > upgrade Zookeeper in the near future? > > > > I'm not sure about ZK compatibility, but we'd also upgrade Curator to > > 5.x, which doesn't support ookeeperK 3.4 anymore. > > > > On 25/11/2021 21:56, Till Rohrmann wrote: > >> Should we ask on the user mailing list whether anybody is still using > >> ZooKeeper 3.4 and thus needs support for this version or can a ZooKeeper > >> 3.5/3.6 client talk to a ZooKeeper 3.4 cluster? I would expect that > >> not a > >> lot of users depend on it but just to make sure that we aren't > >> annoying a > >> lot of our users with this change. Apart from that +1 for removing it if > >> not a lot of user depend on it. > >> > >> Cheers, > >> Till > >> > >> On Wed, Nov 24, 2021 at 11:03 AM Matthias Pohl <matth...@ververica.com> > >> wrote: > >> > >>> Thanks for starting this discussion, Chesnay. +1 from my side. It's > >>> time to > >>> move forward with the ZK support considering the EOL of 3.4 you already > >>> mentioned. The benefits we gain from upgrading Curator to 5.x as a > >>> consequence is another plus point. Just for reference on the > >>> inconsistent > >>> state issue you mentioned: FLINK-24543 [1]. > >>> > >>> Matthias > >>> > >>> [1] https://issues.apache.org/jira/browse/FLINK-24543 > >>> > >>> On Wed, Nov 24, 2021 at 10:19 AM Chesnay Schepler <ches...@apache.org> > >>> wrote: > >>> > >>>> Hello, > >>>> > >>>> I'd like to drop support for Zookeeper 3.4 in 1.15, upgrading the > >>>> default to 3.5 with an opt-in for 3.6. > >>>> > >>>> Supporting Zookeeper 3.4 (which is already EOL) prevents us from > >>>> upgrading Curator to 5.x, which would allow us to properly fix an > >>>> issue > >>>> with inconsistent state. It is also required to eventually support ZK > >>> 3.6. > > > > > >
