Introduction to Apache Zookeeper

In the Hadoop ecosystem, Apache Zookeeper plays an important role in coordination amongst distributed resources. Apart from being an important component of Hadoop, it is also a very good concept to learn for a system design interview.

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Alright, so let’s get started.

Goals

In this post, we will understand the following:

  • What is Apache Zookeeper?
  • How Zookeeper achieves coordination?
  • Zookeeper Architecture
  • Zookeeper Data Model
  • Some Hands-on with Zookeeper
  • Election & Majority in Zookeeper
  • Zookeeper Sessions
  • Application of Zookeeper
  • What kind of guarantees does ZooKeeper provide?
  • Operations provided by Zookeeper
  • Zookeeper APIs
  • Zookeeper Watches
  • ACL in Zookeeper
  • Zookeeper Usecases
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