[jira] [Created] (KAFKA-17457) Raise minimum MetadataVersion for ZK migration to 3.6

["David Arthur (Jira)" <ji...@apache.org>]

David Arthur created KAFKA-17457:
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             Summary: Raise minimum MetadataVersion for ZK migration to 3.6
                 Key: KAFKA-17457
                 URL: https://issues.apache.org/jira/browse/KAFKA-17457
             Project: Kafka
          Issue Type: Task
          Components: controller, migration
            Reporter: David Arthur
             Fix For: 3.6.3, 3.7.2, 3.8.0


In the 3.6.0 release notes, we announced that ZK migrations were production ready.

> The 3.6.0 release marked the first production ready release for the migration of Kafka clusters from a ZooKeeper metadata system to a KRaft metadata system. Users wanting to perform this migration are advised to first upgrade to 3.6.2 or 3.7.1 to receive important bug fixes.

Part of the reasoning behind this announcement was that the migration was feature complete at this point (migration transactions and migration of delegation tokens were included in 3.6). 

If users are on a software version of 3.6 or higher, we should not let them perform the migration at an older MetadataVersion. Otherwise, the migration will be done without the use of metadata transactions, which is not safe.



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