wow this is a major pain as we have to stay on CDH 6.1/6.2 for a long time for some reasons. Do you know why Bryan they decided to require 3.5.5 now?
On Thu, Jun 4, 2020 at 8:42 PM Sri Harsha Chavali < [email protected]> wrote: > Thank you for the inputs Bryan! Not much we can do at this time and need > to figure out a way to incorporate secure 3.5.5 ZK running in parallel with > ZK 3.4.x in our environment. > > Thanks, > Harsha > > Sent from Outlook <http://aka.ms/weboutlook> > ------------------------------ > *From:* Bryan Bende <[email protected]> > *Sent:* Thursday, June 4, 2020 3:34 PM > *To:* [email protected] <[email protected]> > *Subject:* Re: Upgrade NiFi 1.11.4 Cluster External ZooKeeper 3.4.X > > Hello, > > Starting with NiFi 1.10.0 [1], ZooKeeper 3.5.x is a requirement, it will > not work with 3.4.x. > > It is generally not recommended to use embedded ZK for production. > > Thanks, > > Bryan > > [1] https://cwiki.apache.org/confluence/display/NIFI/Migration+Guidance > > > On Thu, Jun 4, 2020 at 3:04 PM Sri Harsha Chavali < > [email protected]> wrote: > > Hi All, > > We have been running NiFi 1.9.2 (3 Node Cluster) with external ZooKeeper > 3.4.X in both CDH 6.2.X and 5.15.X versions. We are trying to upgrade our > NiFi cluster to version 1.11.4 but noticed that it has Zookeeper 3.5.5 > dependency. I have a couple of questions after playing with NiFi 1.11.4 on > my VM. > > 1. Is the ZK 3.5.5 a mandatory dependency or can we still live with ZK > 3.4.x? > 2. If ZK 3.5.5 is a mandatory dependency. Can we reliably run embedded > ZK on all cluster nodes while not using the existing ZK which comes with > our cluster? I ask this question because if we run a 3 node NiFi cluster > with embedded ZK, the ZK on that node goes down along with NiFi when there > is an issue. This will cause Quorum/voting issues and will that break the > NiFi cluster? > 3. If piggybacking on the existing External ZK 3.4.X is an option > what is the functionality we will lose? Is it all the processors that rely > on state-management that get effected? > > Thank you, > Harsha > > Sent from Outlook <http://aka.ms/weboutlook> > >
