IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Each document has metadata associated with it, such as the _index, mapping
_type, and _id meta-fields. The behaviour of some of these meta-fields
can be customised when a mapping type is created.
Identity meta-fields
|
The index to which the document belongs. | |
|
A composite field consisting of the | |
|
The document’s mapping type. | |
|
The document’s ID. |
Document source meta-fields
_source- The original JSON representing the body of the document.
_size- The size of the
_sourcefield in bytes, provided by themapper-sizeplugin.
Indexing meta-fields
_all- A catch-all field that indexes the values of all other fields. Disabled by default.
_field_names- All fields in the document which contain non-null values.
Routing meta-field
_routing- A custom routing value which routes a document to a particular shard.
Other meta-field
_meta- Application specific metadata.