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Child Field DocValues

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    When checked, the value for each instance of the field is itself included in the index. This provides essential support for Search Facets, and for the sorting of search results based on field values: see Sorting Query Results.

    Whenever this checkbox is checked, the resulting index will be correspondingly larger.

    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.

    Note that when the value of the specified field is an array, the array-values are all indexed and searched individually: no special configuration is required.