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Now you understand why a Kafka is called a distributor system because you are able to create a cluster

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of brokers with multiple brokers, but if there are multiple brokers inside of the cluster, it becomes

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unclear how they maintain state of entire cluster and how they communicate between each other.

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And that's where the zookeeper comes in.

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Zookeeper was also developed by Abhijeet is called basically Apache's or Jibaro, and it is used not

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just in conjunction with a Kafka.

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It is also used with Apache Hadoop, for example, or Apache Solar and Apache.

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Kafka broker will not even start without active connection to Zookeeper.

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That's why Zookeeper is a mandatory part of a pasture ecosystem and main responsibilities of zookeeper

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in case when it is used with a bicycle are forming.

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First of all, it maintains a list of active brockers.

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It means that at any moment of time it knows which brokers are active and Dilli and which Helfeld also

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zookeeper ALLEX controller.

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We will talk about what is control a bit later.

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But Controller is elected among brokers in a cluster and there was just a single controller in every

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cluster.

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Also, Zookeeper manages configuration of the topics and partitions.

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It means that when you create any topic in a Kafka colostrum, it is created basically at a zookeeper.

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And Zookeeper distributes this configuration to all brokers in the class.

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That's the way the zookeeper is needed and that's what it does in a Kafka ecosystem.

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But now you may ask my question, but what if this single zookeeper Ostrer, fails how brokers, producers

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and consumers will continue their operations?

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You are able to create a cluster of zookeepers and let me talk about it in the next lecture by.