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https://issues.apache.org/jira/browse/LUCENE-9334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17381331#comment-17381331
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Adrien Grand commented on LUCENE-9334:
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Thanks [~mayya], this makes sense to me. I wasn't sure if we'd still allow
reading old indices with inconsistencies, which felt important. #4 feels
consistent with how we have dealt with e.g. broken offsets in the past, e.g. we
started rejecting broken offsets in Lucene 7.0 but still allowed carrying them
over through merges for indices created by 6.x. Then let's close this issue
now?
> Require consistency between data-structures on a per-field basis
> ----------------------------------------------------------------
>
> Key: LUCENE-9334
> URL: https://issues.apache.org/jira/browse/LUCENE-9334
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Blocker
> Fix For: main (9.0)
>
> Time Spent: 14.5h
> Remaining Estimate: 0h
>
> Follow-up of
> https://lists.apache.org/thread.html/r747de568afd7502008c45783b74cc3aeb31dab8aa60fcafaf65d5431%40%3Cdev.lucene.apache.org%3E.
> We would like to start requiring consitency across data-structures on a
> per-field basis in order to make it easier to do the right thing by default:
> range queries can run faster if doc values are enabled, sorted queries can
> run faster if points by indexed, etc.
> This would be a big change, so it should be rolled out in a major.
> Strict validation is tricky to implement, but we should still implement
> best-effort validation:
> - Documents all use the same data-structures, e.g. it is illegal for a
> document to only enable points and another document to only enable doc values,
> - When possible, check whether values are consistent too.
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