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AndrewJSchofield merged 1 commit into from
Mar 11, 2026
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KAFKA-20290: KIP-1240 updates in upgrade.md #21703

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1 change: 1 addition & 0 deletions docs/getting-started/upgrade.md
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Expand Up @@ -39,6 +39,7 @@ type: docs
* The `kafka-streams-scala` library is deprecated as of Kafka 4.3 and will be removed in Kafka 5.0. For further details, please refer to the [migration guide](/{version}/streams/developer-guide/scala-migration).
* Support for cordoning log directories: For further details, please refer to [KIP-1066](https://cwiki.apache.org/confluence/x/Lg_TEg).
* The `group.coordinator.rebalance.protocols` configuration is deprecated and will be removed in Kafka 5.0. In Kafka 5.0, all protocols will always be enabled and controlled solely by feature versions (`group.version`, `streams.version`, `share.version`) via `kafka-features.sh`. For further details, please refer to [KIP-1237](https://cwiki.apache.org/confluence/x/jIqmFw).
* New group configs have been introduced: `share.delivery.count.limit`, `share.partition.max.record.locks` and `share.renew.acknowledge.enable`, along with equivalent broker configs for specifying minimum and maximum values. In addition, the validation of group configs has been improved. For further details, please refer to [KIP-1240](https://cwiki.apache.org/confluence/x/tIHMFw).

## Upgrading to 4.2.0

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