[SOLR-14692] JSON Facet "join" domain should take optional "method" property

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 8.6, 9.0
• Fix Version/s: 8.7, 9.0
• Component/s: faceting, JSON Request API
• Assignee: Jason Gerlowski
• Reporter: Jason Gerlowski
• Created: 29/Jul/20 15:13
• Updated: 04/Nov/20 15:21
• Resolved: 11/Aug/20 13:20

Description

Solr offers several different join implementations which can be switched off providing the "method" local-param on JoinQuery's.  Each of these implementations has different performance characteristics and can behave very differently depending on a user's data and use case.

When joins are used internally as a part of JSON Faceting's "join" domain-transform though, users have no way to specify which implementation they would like to use.  We should correct this by adding a "method" property to the join domain-transform.  This will let user's choose the join that's most performant for their use case during JSON Facet requests.

Issue Links

• links to: GitHub Pull Request #1707