[LUCENE-9964] FacetResult.labelValues.value is not accurate for duplicate labels in a document

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 8.8.1
• Fix Version/s: 9.0, 8.10
• Component/s: modules/facet
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Gautam Worah
• Created: 18/May/21 17:32
• Updated: 28/Aug/22 16:21
• Resolved: 01/Aug/21 20:21

Description

As part of a separate bug in FacetResult#value we discovered that FacetResult.labelValues.value is not accurate for duplicate labels in a document that uses SortedNumericDocValuesFields.

In theory, each label should only be counted once from a document when returning the labelValues, but today, each duplicate label in a document is counted uniquely.

A test case showing the current (inaccurate) output is here

Issue Links

• links to: GitHub Pull Request #191
• links to: GitHub Pull Request #234
• links to: GitHub Pull Request #2543