The "Sorted" in "SortedNumericDocValuesField" is about the fact that per-document values are returned in numeric order. For instance if you index two values for a document, the insertion order will be ignored and when you will pull sorted numeric doc values on a LeafReader, values for that document will be returned in ascending order.
If you have a single-valued field, then NumericDocValuesField is the way to go. Actually SortedNumericDocValuesField falls back to encoding information on disk the same way as NumericDocValuesField when it notices that a field is effectively single-valued. Le ven. 24 mars 2017 à 10:19, aravinth thangasami < aravinththangas...@gmail.com> a écrit : > Hi all, > > I'm analysing sorting using doc values. > > Please correct me if I am wrong > > > 1.In SortedNumericDocvalueField, the sorting apply across field, not across > segment > > 2.While Sorting the SortedNumericSelector forms a NumericDocvalue from > SortedSetDocvaluesField > So, I thought for a SinglevalueField I decided to use NumericDocvalue, > > Does SortedNumericDocvalueField has any advantage for single valued field > while sorting > > Am I missing anything in it? > > > > Thanks > Aravinth >
