Aiven for Apache Kafka^® upgrade issue for versions prior to 3.6

Note: This issue has been resolved as of Apache Kafka version 3.6.2. To avoid this issue, upgrade to version 3.6.2 or later.

We've identified an issue affecting customers upgrading Aiven for Apache Kafka® clusters from versions earlier than 3.6 to versions 3.6 or 3.7.

Recommended actions:

• For Apache Kafka producer clients earlier than version 3.6.0:
  • Temporarily set transaction.partition.verification.enable to false in the service's advanced configuration during the upgrade.
  • Revert this setting to true after upgrading to Apache Kafka 3.6.0 or later.
• For Apache Kafka producer clients using version 3.6.0 or later:
  • Disabling transaction verification might lead to transaction duplicates.
  • Ensure transaction.partition.verification.enable is set to true after upgrading to version 3.6.0 or later.

For assistance or more details, contact the Aiven support team.