Mapper plugins allow new field data types to be added to Elasticsearch.
The core mapper plugins are:
- [mapper-size]
-
The mapper-size plugin provides the
_size
metadata field which, when enabled, indexes the size in bytes of the original {ref}/mapping-source-field.html[_source
] field. - [mapper-murmur3]
-
The mapper-murmur3 plugin allows hashes to be computed at index-time and stored in the index for later use with the
cardinality
aggregation. - [mapper-annotated-text]
-
The annotated text plugin provides the ability to index text that is a combination of free-text and special markup that is typically used to identify items of interest such as people or organisations (see NER or Named Entity Recognition tools).