Producer config defaults are modified to make record delivery guarantees stronger by default. This ensures ordering, avoids duplicates and increases durability. As the modification could cause compatibility issues for some users, it is advised you go through the migration plan outlined in KIP-679.
AdminClient.listOffsets API is extended with the capability to return the offset and timestamp of the record with the highest timestamp in a topic/partition. This allows easy identification if a topic/ partition is alive - being written to - or the health of it.
Connect API is enhanced with added granularity to support restarting of only the failed connector and its tasks with a single call.
Karapace schema registry for Aiven for Apache Kafka 3.0
The open-source version of Confluent Schema Registry is no longer supported in Apache Kafka 3.0. As a replacement, Aiven provides a lightweight, fast and truly open source tool, Karapace. More information on migrating to Karapace is provided in the Help article End of support for Confluent Schema Registry on Aiven.
Deprecations
The following functionalities are deprecated in Apache Kafka 3.0:
MirrorMaker v1 is deprecated and will no longer be supported in Apache Kafka v4.0
Java 8 and Scala 2.12 programming language versions are deprecated and will be removed in v4.0.
Message formats v0 and v1 are deprecated and will be removed in Apache Kafka 4.0. Start upgrading your client applications to get the best performance.
IDEMPOTENT_WRITE is deprecated and will be removed in a future release. Update your application to use WRITE instead.
How to get started with Aiven for Apache Kafka 3.0
You can either launch a brand new cluster in the Aiven Console or conduct a no-downtime upgrade to the latest version.
In the meantime, make sure you follow our changelog and blog RSS feeds or our LinkedIn and Twitter accounts to stay up-to-date with product and feature-related news.