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Posted to jira@kafka.apache.org by "Gyeongdeok Kim (Jira)" <ji...@apache.org> on 2026/10/20 13:37:00 UTC

[jira] [Commented] (KAFKA-17206) Use v1 of LeaderChangeMessage when kraft.version is 1

    [ https://issues.apache.org/jira/browse/KAFKA-17206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18129157#comment-18129157 ] 

Gyeongdeok Kim commented on KAFKA-17206:
----------------------------------------

Hi, I'd like to work on this. I reproduced that Kafka 4.3.1's reader fails on a v1 LeaderChangeMessage. How should v1 writes be gated for rolling upgrades, given that kraft.version=1 is already supported there?

> Use v1 of LeaderChangeMessage when kraft.version is 1
> -----------------------------------------------------
>
>                 Key: KAFKA-17206
>                 URL: https://issues.apache.org/jira/browse/KAFKA-17206
>             Project: Kafka
>          Issue Type: Task
>            Reporter: Alyssa Huang
>            Priority: Minor
>
> [https://github.com/apache/kafka/pull/16668] introduced v1 of LCM but still uses v0 of the schema.



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