[SOLR-12420] Propose removing schema version; use luceneMatchVersion instead

• Type: Improvement
• Status: Open
• Priority: Blocker
• Resolution: Unresolved
• Fix Version/s: main (10.0)
• Assignee: Unassigned
• Reporter: David Smiley
• Created: 29/May/18 19:04
• Updated: 29/Mar/23 21:55

Description

I propose that the schema version be removed in lieu of using luceneMatchVersion for this. One less thing to manage (in code, need REST API – SOLR-7242, thing to document; etc.). We don't need the fidelity to differentiate from luceneMatchVersion. We're already using luceneMatchVersion for things instead of having a ton of additional version numbers. I can understand the point of putting a version number in in a config file but I don't think we should continue this practice.

To make this happen, if the luceneMatchVersion is >= 7.4 (the release which we start doing this) then a non-existent schema version becomes equivalent to the latest schema version. Specifying the schema version becomes deprecated but supported; we might log a warning.

In 8.0, strip schema version out altogether.