Deprecation Notices for Apache Kafka

Certain features and functionality in Apache Kafka are deprecated or removed in Cloudera Runtime 7.3.2. You must review these changes along with the information about the features in Kafka that will be removed or deprecated in a future release.

Deprecated

ZooKeeper

Deploying new or using existing Kafka clusters running in ZooKeeper mode is deprecated. Support for ZooKeeper-based Kafka clusters will be removed in a future release. Cloudera recommends the following:

Deploy all new Kafka clusters in KRaft mode.
Migrate existing ZooKeeper-based clusters to KRaft following an upgrade to Cloudera Runtime 7.3.2.

This is the only version where migration is possible. Neither previous or future major, minor, and maintenance versions support migration.

important
Migrating Kafka from ZooKeeper to KRaft is in Technical Preview for Cloudera Runtime 7.3.2.0 in Cloudera on cloud The migration creates a three node setup for KRaft, which cannot be scaled.
For additional information, see the following resources:

MirrorMaker (MM1)

MirrorMaker is deprecated. Cloudera recommends that you use Streams Replication Manager instead.

--zookeeper

The --zookeeper option is only supported for the kafka-configs tool and should be only used when updating SCRAM Credential configurations. The --zookeeper option is either deprecated in or removed from other Kafka command line tools. Cloudera recommends that you use the --bootstrap-server option instead.