[jira] [Created] (SOLR-12420) Propose removing schema version; use luceneMatchVersion instead

["David Smiley (JIRA)" <ji...@apache.org>]

David Smiley created SOLR-12420:
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             Summary: Propose removing schema version; use luceneMatchVersion instead
                 Key: SOLR-12420
                 URL: https://issues.apache.org/jira/browse/SOLR-12420
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: David Smiley


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.



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