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Metadata 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
The index to which the document belongs. | |
The document’s ID. |
Document source metadata fields
The original JSON representing the body of the document.
The size of the _source field in bytes, provided by the mapper-size plugin.
Doc count metadata field
A custom field used for storing doc counts when a document represents pre-aggregated data.
Indexing metadata fields
All fields in the document which contain non-null values.
All fields in the document that have been ignored at index time because of ignore_malformed.
Routing metadata field
A custom routing value which routes a document to a particular shard.
Other metadata field
Application specific metadata.
The current data tier preference of the index to which the document belongs.
