Kafka - 0.9.0.0版本发行说明
关于kafka0.8.2.0版本说明，只简单介绍一下新特性，具体如bug修复和改进等详情请自行查看。
子任务
[KAFKA-1316] - 重构发送者
[KAFKA-1328] - 增加一个新的消费者API
[KAFKA-1329] - 为消费者添加元数据提取和更新功能。
[KAFKA-1330] - 实现订阅(TopicPartition...partitions) and pool(timeout) in the consumer
[KAFKA-1331] - 为新消费者添加承诺偏移量的能力。
[KAFKA-1333] - 为服务器添加消费者协调员模块
[KAFKA-1334] - 协查员将会检测故障的消费者
[KAFKA-1335] - 重新平衡逻辑添加到协调员/消费者
[KAFKA-1471] - 为LZ4和LZ4HC压缩添加生产者单元测试
[KAFKA-1477] - add authentication layer and initial JKS x509 implementation for brokers, producers and consumer for network communication
[KAFKA-1683] - Implement a "session" concept in the socket server
[KAFKA-1684] - Implement TLS/SSL authentication
[KAFKA-1685] - Implement TLS/SSL tests
[KAFKA-1686] - Implement SASL/Kerberos
[KAFKA-1688] - Add authorization interface and naive implementation
[KAFKA-1690] - 为Kafka Broker, Producer 和 Consumer增加 SSL支持。
[KAFKA-1691] - new java consumer needs ssl support as a client
[KAFKA-1695] - Authenticate connection to Zookeeper
[KAFKA-1740] - Merge Offset manager into Coordinator
[KAFKA-1750] - handle "topic not exists" scenario
[KAFKA-1752] - add --replace-broker option
[KAFKA-1760] - Implement new consumer client
[KAFKA-1809] - Refactor brokers to allow listening on multiple ports and IPs
更多内容查看：https://apache.opencas.org/kafka/0.9.0.0/RELEASE_NOTES.html
