[LUCENE-7899] Rename FieldValueQuery to DocValuesFieldExistsQuery

• Type: Improvement
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 7.0, 8.0
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Michael McCandless
• Created: 04/Jul/17 22:46
• Updated: 28/Aug/22 15:17
• Resolved: 05/Jul/17 15:02

Description

I don't think we have a query today to efficiently test whether a doc values field exists (has any value) for each document in the index?

Now that we use iterators to access doc values, this should be an efficient query: we can return the DISI we get for the doc values.

ElasticSearch indexes its own field to record which field names occur in a document, so it's able to do "exists" for any field (not just doc values fields), but I think doc values fields we can just get "for free".

I haven't started on this ... just wanted to open the issue first for discussion.

Issue Links

• relates to: SOLR-12488 Rewrite exists field value query to leverage DocValuesFieldExistsQuery and NormsFieldExistsQuery