Hi Andrey, ZK 3.4.6 probably works, but we haven't tested with that version for a while. Generally, we recommend upgrading to the latest bug fix release of ZooKeeper (3.4.13, 3.5.8) as they tend to include important fixes. However, you can do that in your own time, independently of the Kafka upgrade.
Ismael On Thu, Jul 23, 2020 at 2:21 PM Andrey Klochkov <akloch...@liftoff.io> wrote: > Hi Peter, > Thanks, that's very helpful! We'll go on with upgrading to 2.4.1 and not > touching our ZK 3.4.6 for now. I can report back if that actually causes > issues just in case anybody is interested. > > On Thu, Jul 23, 2020 at 2:00 PM Peter Bukowinski <pmb...@gmail.com> wrote: > > > Agreed. We use a cloudera distribution of zookeeper, that is versioned at > > 3.4.5 (plus a bunch of backported patches) with kafka 2.4 and haven’t had > > any issues. > > > > > > > On Jul 23, 2020, at 1:19 PM, Andrey Klochkov <akloch...@liftoff.io> > > wrote: > > > > > > We are running a separate ZK cluster and its version is not really tied > > to > > > the version of Kafka we're using. > > > > > > I have seen the Confluent compatibility matrix and based on that our > > > *current* version of Kafka is not compatible with our version of ZK, > and > > we > > > haven't seen any problems with that. My suspicion is that Confluent > might > > > be using some of the newer ZK features such as e.g. dynamic > > > configuration and that's where their requirements come from, but that > > > doesn't mean Kafka requires the versions of ZK that Confluent lists as > > > required for the Confluent platform. > > > > > > On Thu, Jul 23, 2020 at 1:06 PM M. Manna <manme...@gmail.com> wrote: > > > > > >> Hi, > > >> > > >> AFAIK, ZK is packed with Kafka. So if you upgrade to 2.4.1 you’ll get > > what > > >> is in 2.4.1. > > >> > > >> It’s a little different however, if you’re hosting ZK in a different > > host > > >> running independently of Kafka. > > >> > > >> What’s your situation ? > > >> > > >> > > >> > > >> On Thu, 23 Jul 2020 at 21:02, Andrey Klochkov <akloch...@liftoff.io> > > >> wrote: > > >> > > >>> Hello, > > >>> We're upgrading our Kafka from 1.1.0 to 2.4.1 and I'm wondering if ZK > > >> needs > > >>> to be upgraded too (we're currently on 3.4.6). The upgrade guide says > > >> that > > >>> "kafka has switched to the XXX version of ZK" but never says if > > switching > > >>> to a newer ZK is mandatory or not. What are the guidelines on keeping > > >> Kafka > > >>> and ZK compatible? > > >>> > > >>> -- > > >>> Andrey Klochkov > > >>> > > >> > > > > > > > > > -- > > > Andrey Klochkov > > > > > > -- > Andrey Klochkov >
