3.0.1

3.0.1 (Jun 17, 2026)

Fixes

• receive_message_max_bytes default 100MiB (consumer/producer/admin); check against fetch_max_bytes and max_partition_fetch_bytes in Consumer (#3075)

Consumer

• Add MemberState to ConsumerGroupMetadata / consumer.group_metadata() (#3071)

Tests

• Add ConsumerGroupRunner fixture to manage multi-consumer group integration tests (#3072)
• Add MockGroup and test coordinator rebalance / metadata snapshot changes (#3069)
• Use 4.3 api_version for producer tests; fixup inadvertent sender thread leak in test (#3068)
• Add test coverage for producer acks (#3067)
• Fill-in empty sender tests (#3066)
• Add MockCluster; test failover on CoordinatorNotAvailableError (#3065)

Documentation

• Add ConsumerRecord, RecordMetadata, and FutureRecordMetadata to docs (#3070)