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https://issues.apache.org/jira/browse/LUCENE-9450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17385159#comment-17385159
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Gautam Worah commented on LUCENE-9450:
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[~jpountz] I think your points make sense. Version based checks are definitely
cleaner and can act as self documentation on what changed.
I had not thought about the migration process when I was thinking about the
index using a different name approach.
In the meantime, I had already submitted a
[PR|https://github.com/apache/lucene/pull/220] with approach 1 yesterday. I'll
revise it with version based checks
> Taxonomy index should use DocValues not StoredFields
> ----------------------------------------------------
>
> Key: LUCENE-9450
> URL: https://issues.apache.org/jira/browse/LUCENE-9450
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Affects Versions: 8.5.2
> Reporter: Gautam Worah
> Priority: Minor
> Labels: performance
> Fix For: main (9.0)
>
> Attachments: LUCENE-9450-localrun.py-v1, wip_taxonomy_patch
>
> Time Spent: 4h
> Remaining Estimate: 0h
>
> The taxonomy index that maps binning labels to ordinals was created before
> Lucene added BinaryDocValues.
> I've attached a WIP patch (does not pass tests currently)
> Issue suggested by [~mikemccand]
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