mirror of
https://github.com/elastic/elasticsearch.git
synced 2025-06-29 09:54:06 -04:00
b7e3a1e14b
* delete asciidoc files
* add migrated files
* fix errors
* Disable docs tests
* Clarify release notes page titles
* Revert "Clarify release notes page titles"
This reverts commit 8be688648d.
* Comment out edternal URI images
* Clean up query languages landing pages, link to conceptual docs
* Add .md to url
* Fixes inference processor nesting.
---------
Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>
Co-authored-by: Liam Thompson <leemthompo@gmail.com>
Co-authored-by: Martijn Laarman <Mpdreamz@gmail.com>
Co-authored-by: István Zoltán Szabó <szabosteve@gmail.com>
66 lines
2.2 KiB
Markdown
66 lines
2.2 KiB
Markdown
---
|
||
mapped_pages:
|
||
- https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-fields.html
|
||
---
|
||
|
||
# Document metadata fields [mapping-fields]
|
||
|
||
Each document has metadata associated with it, such as the `_index` and `_id` metadata fields. The behavior of some of these metadata fields can be customized when a mapping is created.
|
||
|
||
|
||
## Identity metadata fields [_identity_metadata_fields]
|
||
|
||
[`_index`](/reference/elasticsearch/mapping-reference/mapping-index-field.md)
|
||
: The index to which the document belongs.
|
||
|
||
[`_id`](/reference/elasticsearch/mapping-reference/mapping-id-field.md)
|
||
: The document’s ID.
|
||
|
||
|
||
## Document source metadata fields [_document_source_metadata_fields]
|
||
|
||
[`_source`](/reference/elasticsearch/mapping-reference/mapping-source-field.md)
|
||
: The original JSON representing the body of the document.
|
||
|
||
[`_size`](/reference/elasticsearch-plugins/mapper-size.md)
|
||
: The size of the `_source` field in bytes, provided by the [`mapper-size` plugin](/reference/elasticsearch-plugins/mapper-size.md).
|
||
|
||
|
||
## Doc count metadata field [_doc_count_metadata_field]
|
||
|
||
[`_doc_count`](/reference/elasticsearch/mapping-reference/mapping-doc-count-field.md)
|
||
: A custom field used for storing doc counts when a document represents pre-aggregated data.
|
||
|
||
|
||
## Indexing metadata fields [_indexing_metadata_fields]
|
||
|
||
[`_field_names`](/reference/elasticsearch/mapping-reference/mapping-field-names-field.md)
|
||
: All fields in the document which contain non-null values.
|
||
|
||
[`_ignored`](/reference/elasticsearch/mapping-reference/mapping-ignored-field.md)
|
||
: All fields in the document that have been ignored at index time because of [`ignore_malformed`](/reference/elasticsearch/mapping-reference/ignore-malformed.md).
|
||
|
||
|
||
## Routing metadata field [_routing_metadata_field]
|
||
|
||
[`_routing`](/reference/elasticsearch/mapping-reference/mapping-routing-field.md)
|
||
: A custom routing value which routes a document to a particular shard.
|
||
|
||
|
||
## Other metadata field [_other_metadata_field]
|
||
|
||
[`_meta`](/reference/elasticsearch/mapping-reference/mapping-meta-field.md)
|
||
: Application specific metadata.
|
||
|
||
[`_tier`](/reference/elasticsearch/mapping-reference/mapping-tier-field.md)
|
||
: The current data tier preference of the index to which the document belongs.
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|