Hi, Kevin, Thanks for the update. The KIP still outlines the following steps, which are incorrect given the proposed changes. Now, we need to remove the voter from controller.quorum.voters before unregistering it.
Unregister a voter in a static KRaft quorum when the static voter set is mistakenly configured 1. Stop the voter who was mistakenly put in controller.quorum.voters 2. Run kafka-cluster unregister-controller 3. Ensure the stopped voter is not part of controller.quorum.voters on every Kafka node Jun On Fri, Aug 21, 2026 at 4:11 PM Kevin Wu <[email protected]> wrote: > Hi all, > > Thanks again for the discussions on this feature. I wanted to provide a > small update on some additional behavior for this feature and its > motivation, which can be found here: > > https://urldefense.com/v3/__https://cwiki.apache.org/confluence/spaces/KAFKA/pages/406623954/KIP-1312*Support*unregistering*controllers*KIP1312*3ASupportunregisteringcontrollers-AdditionalChanges__;KysrIyU!!Ayb5sqE7!o1tnFIVQOScMdmyxeh1vqeCtkhTja0OMygmDzlH43kidXhKb5peQWXOGNTwT2wyE-_f6nEf5xd84EoiHYq7hQA$ > . > Essentially, > https://urldefense.com/v3/__https://issues.apache.org/jira/browse/KAFKA-20865__;!!Ayb5sqE7!o1tnFIVQOScMdmyxeh1vqeCtkhTja0OMygmDzlH43kidXhKb5peQWXOGNTwT2wyE-_f6nEf5xd84EoiUSJrtqQ$ > makes it so > none of the KRaft voters can be unregistered. The initially proposed > behavior was only the active controller could not be unregistered. > > Best, > Kevin Wu > > On Fri, May 15, 2026 at 1:12 AM Christo Lolov <[email protected]> > wrote: > > > Hello, > > > > Thanks for driving this! > > > > +1 (binding) > > > > Best, > > Christo > > > > On Fri, 15 May 2026 at 04:52, Luke Chen <[email protected]> wrote: > > > > > > Hi Kevin, > > > > > > Thanks for the KIP. LGTM. > > > > > > +1 (binding) from me. > > > > > > Luke > > > > > > On Wed, May 13, 2026 at 8:20 PM José Armando García Sancio via dev < > > > [email protected]> wrote: > > > > > > > Hi Kevin, > > > > > > > > Thanks for the KIP. LGTM. > > > > > > > > +1 (binding) > > > > > > > > -- > > > > -José > > > > > > >
