[SOLR-11706] JSON FacetModule can't compute stats (min,max,etc...) on multivalued fields

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 8.4
• Component/s: Facet Module
• Assignee: Munendra S N
• Reporter: Chris M. Hostetter
• Created: 29/Nov/17 21:45
• Updated: 29/Dec/19 20:51
• Resolved: 07/Dec/19 06:19

Description

While trying to write some tests demonstrating equivalences between the StatsComponent and the JSON FacetModule i discovered that the FacetModules stat functions (min, max, etc...) don't seem to work on multivalued fields.

Based on the stack traces, i gather the problem is because the FacetModule seems to rely exclusively on using the "Function" parsers to get a value source – apparently w/o any other method of accumulating numeric stats from multivalued (numeric) DocValues?

Issue Links

• contains: SOLR-10620 implement min/max facet functions for multi-valued string fields
• relates to: SOLR-12559 FunctionQParser.FLAG_USE_FIELDNAME_SOURCE doesn't work when subparsers are involved