CODEWITHSUNDEEP
javasolrlucene
tribbloid
tribbloid

Reputation: 3858

What's the difference between Lucene's FloatField and FloatDocValuesField?

For storing a float type in a document these are two options with apparently overlapping functionalities. What's there difference? (I'm using lucene-solr 4.6)

Upvotes: 0

Views: 219

Answers (1)

femtoRgon
femtoRgon

Reputation: 33351

FloatDocValuesField is a DocValues field. The idea is to provide values for a document that can be retrieved quickly, without having to resort to fetching the document from storage, for use, for example, in scoring (See: AtomicReader.getNumericDocValues).

Generally, you should stick to FloatField, etc. unless you need the functionality provided by the DocValues fields.

For further reading: Introducing Lucene Index Doc Values, or this brief description of it as pertains to Solr.

Upvotes: 1

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