CODEWITHSUNDEEP
elasticsearchlucene
Jack
Jack

Reputation: 5870

how does Lucene index not_analyzed fields

I know for analyzed field, Lucene would tokenized the clause then store the tokens as an inverted index for searching. But how does Lucene index the Not_Analyzed fields, I don't believe it is still a inverted index. Is it BTree or Hash?

Upvotes: 0

Views: 334

Answers (1)

Val
Val

Reputation: 217254

Not analyzed fields are also stored in the inverted index the same way analyzed fields are, they are simply... not analyzed. This means the field value will not be tokenized, etc, before being indexed.

So if your not_analyzed field contains the value New York, then that value will go unmodified and untokenized in the inverted index and you'll still be able to search for the documents containing that exact value. It's somehow similar to having an analyzed field whose analyzer is a keyword analyzer

Upvotes: 2

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