[SOLR-13381] Unexpected docvalues type SORTED_NUMERIC Exception when grouping by a PointField facet

• Type: Bug
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 7.0, 7.6, 7.7, 7.7.1
• Component/s: faceting

Environment

solr, solrcloud

• Assignee: Unassigned
• Reporter: Zhu JiaJun
• Created: 09/Apr/19 02:44
• Updated: 31/Dec/20 13:25

Description

Hey,

I got an "Unexpected docvalues type SORTED_NUMERIC" exception when I perform group facet on an IntPointField. Debugging into the source code, the cause is that internally the docvalue type for PointField is "NUMERIC" (single value) or "SORTED_NUMERIC" (multi value), while the TermGroupFacetCollector class requires the facet field must have a "SORTED" or "SOTRTED_SET" docvalue type: https://github.com/apache/lucene-solr/blob/2480b74887eff01f729d62a57b415d772f947c91/lucene/grouping/src/java/org/apache/lucene/search/grouping/TermGroupFacetCollector.java#L313

 

When I change schema for all int field to TrieIntField, the group facet then work. Since internally the docvalue type for TrieField is SORTED (single value) or SORTED_SET (multi value).

Regarding that the "TrieField" is depreciated in Solr7, please help on this grouping facet issue for PointField. I also commented this issue in SOLR-7495.

 

In addtional, all place of "${solr.tests.IntegerFieldType}" in the unit test files seems to be using the "TrieintField", if change to "IntPointField", some unit tests will fail, for example: https://github.com/apache/lucene-solr/blob/3de0b3671998cc9bc723d10f1b31ce48cbd4fa64/solr/core/src/test/org/apache/solr/request/SimpleFacetsTest.java#L417