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    Reindex data from an existing Elasticsearch index

    elasticsearchelasticsearch
    ^12.1.3

    Business requirements change, new information is discovered, or usage patterns differ from the expected use. In any case, sooner or later you will find the need to reindex your data to accommodate these changes. In this lesson you will learn how to leverage the information stored in Elasticsearch and the bulk API to reindex data from one index to another.