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Apache Accumulo for Developers by Guðmundur Jón Halldórsson

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Setting up ZooKeeper

ZooKeeper is designed to be a high performance coordination service for the cluster environment running distributed applications. By allowing distributed processes to coordinate using a simple namespace (similar to a filesystem) stored in memory, a high throughput and low latency is achieved. The best performance is reached when read versus write ratios are around 10:1.

ZooKeeper is written in Java and therefore requires a working Java 1.6.x installation. For Windows installation, Cygwin is required.

Installing ZooKeeper

When ZooKeeper is set up, every node has to know about each other. ZooKeeper follows the concept of "follow the leader", which means there is always a leader machine, and the leader is chosen when the ZooKeeper ...

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