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What are elasticsearch indexes?

They are not mentioned in ES glossary .

What is their relationship with other ES objects (shards / nodes / indices)?

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Indexes are the plural of an index. If you have more than one index, you call it an index. http://www.thefreedictionary.com/index

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Indexes are equivalent to databases in relational databases. Just as a relational database has a schema, ES index has a mapping .

Shards => index is broken into shards (to distribute and scale them)

= > ( , node )

, ( Rafal Kuc) ES Cluster, Index, node Shards.

ES diagram

, stackoverflow post Elasticsearch @javanna

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