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https://issues.apache.org/jira/browse/KAFKA-18442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin McCabe resolved KAFKA-18442.
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Resolution: Won't Fix
So firstly, this is a real bug, which we cannot fix since 3.3 is no longer
supported.
However, it's unlikely anyone will hit this since JBOD is not officially
supported in 3.3 (when in KRaft mode, at least),
This PR has fixed the ducktape test failure.
https://github.com/apache/kafka/pull/18386
Closing as WONTFIX
> Downgrades to 3.3.2 will fail from versions 3.6.0 and above when JBOD is
> enabled
> --------------------------------------------------------------------------------
>
> Key: KAFKA-18442
> URL: https://issues.apache.org/jira/browse/KAFKA-18442
> Project: Kafka
> Issue Type: Bug
> Reporter: Jonah Hooper
> Priority: Minor
>
> Downgrading from 3.6.x and above to 3.3.x will fail with the following error:
> {code:java}
> kafka.common.InconsistentBrokerMetadataException: BrokerMetadata is not
> consistent across log.dirs. This could happen if multiple brokers shared a
> log directory (log.dirs) or partial data was manually copied from another
> broker.
> ...{code}
> This is broken in 3.3.2 version of Kafka
> [BrokerMetatadataCheckpoint.scala|https://github.com/apache/kafka/blob/c9c03dd7ef9ff4edf2596e905cabececc72a9e9d/core/src/main/scala/kafka/server/BrokerMetadataCheckpoint.scala#L186].
> In 3.3.2 kafka loads information about metadata directories via
> {{metadata.properties}} files and expects that the properties are duplicated
> for all log directories. We crash with a fatal error if they are
> non-duplicate which at that time would mean that another instance of kafka
> was using the same log directories.
> In [#14291|https://github.com/apache/kafka/pull/14291] (added in Kafka
> version 3.6.x), the requirement that the {{metadata.properties}} files is
> duplicate in each directory was dropped. Each `metadata.properties` file will
> now contain a non-unique {{directory.id}} field for each dir. This has no
> effect on versions of kafka running {{kraft}} mode, >= 3.4.x (they care only
> about uniqueness of node.id and cluster.id) but does affect 3.3.2 and until
> 2.8.x (the change was added in
> [#9967|https://github.com/apache/kafka/pull/9967]) since it expects every
> {{metadata.properties}} file to be the same.
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