Child Field DocValues

      +

      To include the value for each instance of the field in the index, the docvalues checkbox must be checked. This is essential for Facets.

      For sorting of search results based on field values: see Sorting Query Results.

      By default, this checkbox is selected. If it is unchecked, the values are not added to the index; and in consequence, neither Search Facets nor value-based result-sorting is supported.

      Example

      fts type mappings child field docvalues
      When this checkbox is checked, the resulting index will increase proportionately in size.