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Introduction to ZooKeeper

Introduction to ZooKeeper. Agenda. What is ZooKeeper (ZK) What ZK can do How ZK works ZK interface What ZK ensures. What is ZK. C entralized service for maintaining configuration information , naming, providing distributed synchronization , and providing group services .

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Introduction to ZooKeeper

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  1. Introduction to ZooKeeper

  2. Agenda • What is ZooKeeper (ZK) • What ZK can do • How ZK works • ZK interface • What ZK ensures

  3. What is ZK • Centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. • Simply Put: Coordination Service For Distributed Systems

  4. What ZK can do • Name Service • Configuration • Group Membership • Distributed Synchronization

  5. How ZK works

  6. ZK interfaces • Command Line Tool • Zookeeper API Bindings • Java • C

  7. ZKensures • Sequential Consistency • Updates from a client will be applied in the order that they were sent. • Atomicity • Updates either succeed or fail. No partial results. • Single System Image • A client will see the same view of the service regardless of the server that it connects to. • Reliability • Once an update has been applied, it will persist from that time forward until a client overwrites the update. • Timeliness • The clients view of the system is guaranteed to be up-to-date within a certain time bound.

  8. Cautions to take • Prefer small data size for each node (less than 1M) • One time trigger (add again and again if u need) • Dataset in all must fit in memory

  9. Thank You

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