v1.9.0 is a feature release:
- OAUTHBEARER OIDC support
- KIP-140 Admin API ACL support
- Added MockCluster for functional testing of applications without the need
for a real Kafka cluster (by @SourceFellows and @kkoehler, #729).
See examples/mock_cluster.
Fixes
- Fix Rebalance events behavior for static membership (@jliunyu, #757, #798).
- Fix consumer close taking 10 seconds when there's no rebalance needed (@jliunyu, #757).
confluent-kafka-go is based on librdkafka v1.9.0, see the
librdkafka release notes
for a complete list of changes, enhancements, fixes and upgrade considerations.