We have installed zookeeper 3.6.2 and Kafka 2.13-2.6.0 Recently I noticed that zookeeper-server-start.sh is actually using the zookeeper jar file from /kafka/libs/ which is zookeeper-3.5.8.jar.
- How do I upgrade zookeeper to 3.6.2. Do I have to find a version of kafka that has it bundled in the tar?
- Why do they ask you to download and install zookeeper if the jar is already bundled in kafka and that is the one that kafka uses?
1条答案
按热度按时间nkkqxpd91#
如果要升级Zookeeper集群，您需要单独安装（并启动）Kafka提供的版本和脚本之外的Zookeeper集群，但这会带来风险。
Kafka确实与Zookeeper捆绑在一起，并且针对特定版本进行了测试，但是它的升级频率不如Zookeeper项目的版本。在盲目升级依赖组件之前，您应该遵循Kafka升级说明;在2.6版本中有一些注解，提到了Zookeeper升级可能失败的情况，以及需要添加哪些设置来修复它。除非你能保证Zookeeper服务器升级将向后兼容，否则Kafka仍然有一个特定版本的Zookeeper客户端用于网络通信。
值得指出的是Kafka KRaft（Zookeeper-less模式）已经处于最新的
3.x版本的预览发布阶段，并且计划在年底前接近生产就绪，所以我会推迟升级Zookeeper，除非你真的需要其他东西。