Introducing Zen-Discovery
Elasticsearch is highly scalable and distributed in nature. This scalability would not have been possible without a reliable centralized co-ordination system. In fact, every distributed system requires a coordination system to maintain configuration information' and provide distributed synchronizations to all the nodes connected in the cluster. If you have worked with SolrCloud, you will know that it uses a coordination service known as Zookeeper. Zookeeper is an awesome open source project as a whole and can be used with many distributed systems, even with Elasticsearch by installing the plugin.
At the heart of Elasticsearch, there is no third-party coordination service. However, Elasticsearch does have a built-in centralized ...
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