Apache Kafka® version 3.0 was announced on September 21, 2021, and Aiven already supports it. Find out about the enhancements across the board.
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It's been a long two months, but Aiven has now implemented support for Apache Kafka version 3.0.
As this is a new major version, it comes with a number of enhancements across the board, as well as with some deprecations and API changes.
KIP-709: Extend OffsetFetch requests to accept multiple group ids
OffsetFetch API allows grouping multiple consumer group offset requests into a single fetch. This reduces request overhead and simplifies client code.
[KIP-679: Producer will enable strongest delivery guarantee by default](https://cwiki.apache.org/confluence/display/KAFKA/KIP-679%3A+Producer+will+enable+the+strongest+delivery+guarantee+by+default)
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.
KIP-745: Connect API to restart connector and tasks
Connect API is enhanced with added granularity to support restarting of only the failed connector and its tasks with a single call.
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.
The following functionalities are deprecated in 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.
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