Hello Ismael, Thank you for the valid points. I have updated the KIP, but do let me know if you believe it is still not clear enough.
Best, Christo > On 2 Mar 2023, at 15:21, Ismael Juma <ism...@juma.me.uk> wrote: > > Thanks for the KIP. I think the following is a little confusing since it > doesn't make it clear the the ZooKeeper deployment is separate from Kafka, > Kafka only includes the ZooKeeper libraries. I think it would be useful to > explain the upgrade process for someone running Apache Kafka 2.3 and > ZooKeeper 3.4 (the hardest case) and the same for someone running Apache > Kafka 2.4 and ZooKeeper 3.5. > > Also, it's worth clarifying that we actually still test direct kafka > upgrades from 0.8.2 to 3.4. In practice, we have distinguished "providing > updates" versus "allowing direct upgrades from". Apache Kafka 4.0 will > change this since you will have to upgrade to a bridge release before > upgrading to 4.0, but that's a new development. > > "Users who use Kafka clusters with Zookeeper clients older than 3.5.x won't > be able to communicate with a Zookeeper cluster using 3.8.1. As mentioned > in the accompanying JIRA ticket Apache Kafka has been using Zookeeper 3.5.x > since version 2.4 so versions above and including it should be safe for > this upgrade. It is acceptable to break compatibility with Apache Kafka > versions prior to 2.4 as they are considered beyond their end of life and > are not maintained. (source: Time Based Release Plan#WhatIsOurEOLPolicy)." > > Ismael > >> On Wed, Feb 15, 2023 at 1:47 AM Christo Lolov <christolo...@gmail.com> >> wrote: >> >> Hello! >> >> I would like to start a discussion for KIP-902: Upgrade Zookeeper to >> 3.8.1. The Zookeeper version currently used in Kafka reached its end of >> life in December 2022. You can find the KIP at >> https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=240882784 >> >> Thanks in advance for the reviews. >> >> Christo
