[SOLR-14693] Using `fl=[explain]` (ExplainAugmenterFactory) does not work when grouping is enabled and collection has only one shard

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 8.4.1
• Component/s: SolrCloud

Environment

Linux kernel 5.4.0-42-generic

OpenJDK 64-bit Server VM 11.0.8 11.0.8+10

• Assignee: Unassigned
• Reporter: Charles Burnett
• Created: 29/Jul/20 17:20
• Updated: 19/Aug/20 21:25
• Resolved: 01/Aug/20 09:35

Description

Explain field is added, as expected, in the following scenarios:

• Grouping is disabled
• Grouping is enabled and collection has more than one shard

Explain field is NOT added to documents in the following scenario:

• Grouping is enabled and collection has only one shard

 

Issue Links

• duplicates: SOLR-9622 ExplainAugmenterFactory does not work on grouped queries