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7a7bd6086a
Current features (eg. update API) and future features (eg. reindex API) depend on _source. This change locks down the field so that it can no longer be disabled. It also removes legacy settings compress/compress_threshold. closes #8142 closes #10915
14 lines
519 B
Plaintext
14 lines
519 B
Plaintext
[[mapping-source-field]]
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=== `_source`
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The `_source` field is an automatically generated field that stores the
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actual JSON that was used as the indexed document. It is not indexed
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(searchable), just stored. When executing "fetch" requests, like
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<<docs-get,get>> or
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<<search-search,search>>, the `_source` field is
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returned by default.
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Many APIs may use the `_source` field. For example, the
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<<docs-update,Update API>>. To minimize the storage cost of
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`_source`, set `index.codec: best_compression` in index settings.
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