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In an elastic cluster, there are many entities that makes up a functioning cluster. Nodes, Primary Shards and Replicas are the ones frequently getting referred in documentation and articles.
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. Analysis and Analyzers Elastic Search breaks (tokenizes) data in the document and build index of words (tokens). For each token, it points to the documents that matches the token. The words (tokens) are transformed a particular manner before being stored in the index. This process of breaking the document in a set of words