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IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Java API [6.4] ›Document APIs

Reindex API

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Reindex API

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See reindex API.

BulkByScrollResponse response = ReindexAction.INSTANCE.newRequestBuilder(client)
    .destination("target_index")
    .filter(QueryBuilders.matchQuery("category", "xzy")) 
    .get();

Optionally a query can provided to filter what documents should be re-indexed from the source to the target index.
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