703dbff83d
The `exists` and `missing` filters need to merge postings lists of all existing terms, which can be very costly, especially on high-cardinality fields. This commit indexes the field names of a document under `_field_names` and reuses it to speed up the `exists` and `missing` filters. This is only enabled for indices that are created on or after Elasticsearch 1.3.0. Close #5659 |
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| .. | ||
| all-field.asciidoc | ||
| analyzer-field.asciidoc | ||
| boost-field.asciidoc | ||
| field-names-field.asciidoc | ||
| id-field.asciidoc | ||
| index-field.asciidoc | ||
| parent-field.asciidoc | ||
| routing-field.asciidoc | ||
| size-field.asciidoc | ||
| source-field.asciidoc | ||
| timestamp-field.asciidoc | ||
| ttl-field.asciidoc | ||
| type-field.asciidoc | ||
| uid-field.asciidoc | ||