Zookeeper requires that you have a quorum of servers up, where quorum is ceil(N/2). For a 3 server ensemble, that means 2 servers must be up at any time, for a 5 server ensemble, 3 servers need to be up at any time.
just omit the “start” parameter and call “bin\zkServer” instead.
I just have the same situation as you and I have just fixed this problem. It is the reason that you have configured even number of zookeepers which directly result in this problem,try to change your number of zookeeper node to a odd one. for example the original status of my zookeeper cluster is consisted … Read more
First of all, zookeeper is needed only for high level consumer. SimpleConsumer does not require zookeeper to work. The main reason zookeeper is needed for a high level consumer is to track consumed offsets and handle load balancing. Now in more detail. Regarding offset tracking, imagine following scenario: you start a consumer, consume 100 messages … Read more
As of v0.9.0, Kafka ships with a suite of tools in the /bin one of which is the kafka-consumer-groups.sh tool. This will delete a consumer group. ./kafka-consumer-groups.sh –zookeeper <zookeeper_url> –delete –group <group-name>
Kafka uses an external coordination framework (by default Zookeeper) to maintain configuration. It seems the configuration is now out-of-sync with the Kafka log data. In this case, I’d remove affected topic data and related Zookeeper data. For Test Environment: Stop Kafka-server and Zookeeper-server Remove the data directories of both services, by default they are /tmp/kafka-log … Read more
In a nutshell, ZooKeeper helps you build distributed applications. How it works You may describe ZooKeeper as a replicated synchronization service with eventual consistency. It is robust, since the persisted data is distributed between multiple nodes (this set of nodes is called an “ensemble”) and one client connects to any of them (i.e., a specific … Read more