A newer version is available. For the latest information, see the
current release documentation.
Metadata fields
editMetadata fields
editEach document has metadata associated with it, such as the _index, mapping
_type, and _id metadata fields. The behavior of
some of these metadata fields can be customized when a mapping type is created.
Identity metadata fields
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The index to which the document belongs. |
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The document’s mapping type. |
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The document’s ID. |
Document source metadata fields
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_source - The original JSON representing the body of the document.
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_size -
The size of the
_sourcefield in bytes, provided by themapper-sizeplugin.
Doc count metadata field
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_doc_count - A custom field used for storing doc counts when a document represents pre-aggregated data.
Indexing metadata fields
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_field_names - All fields in the document which contain non-null values.
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_ignored -
All fields in the document that have been ignored at index time because of
ignore_malformed.
Routing metadata field
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_routing - A custom routing value which routes a document to a particular shard.