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Posted to issues@lucene.apache.org by "Robert Muir (Jira)" <ji...@apache.org> on 2021/08/24 15:38:00 UTC
[jira] [Commented] (LUCENE-10062) Explore using SORTED_NUMERIC doc
values to encode taxonomy ordinals for faceting
[ https://issues.apache.org/jira/browse/LUCENE-10062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17403885#comment-17403885 ]
Robert Muir commented on LUCENE-10062:
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+1 for this experiment. I think you are correct: some comparisons/benchmarks were done early on when numerics were very green. It would be interesting to see if the situation has improved.
> Explore using SORTED_NUMERIC doc values to encode taxonomy ordinals for faceting
> --------------------------------------------------------------------------------
>
> Key: LUCENE-10062
> URL: https://issues.apache.org/jira/browse/LUCENE-10062
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Reporter: Greg Miller
> Assignee: Greg Miller
> Priority: Minor
>
> We currently encode taxonomy ordinals using varint style packing in a binary doc values field. I suspect there have been a number of improvements to SortedNumericDocValues since taxonomy faceting was first introduced, and I plan to explore replacing the custom binary format we have today with a SORTED_NUMERIC type dv field instead.
> I'll report benchmark results and index size impact here.
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