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https://issues.apache.org/jira/browse/LUCENE-10122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17445540#comment-17445540
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ASF subversion and git services commented on LUCENE-10122:
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Commit 1ac5188891601d6f02940c73dd9c6160ce9d4eea in lucene's branch
refs/heads/branch_9_0 from Patrick Zhai
[ https://gitbox.apache.org/repos/asf?p=lucene.git;h=1ac5188 ]
LUCENE-10122 Use NumericDocValues to store taxonomy parent array instead of
custom term positions (#442)
> Explore using NumericDocValue to store taxonomy parent array
> ------------------------------------------------------------
>
> Key: LUCENE-10122
> URL: https://issues.apache.org/jira/browse/LUCENE-10122
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Affects Versions: main (10.0)
> Reporter: Haoyu Zhai
> Priority: Minor
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> We currently use term position of a hardcoded term in a hardcoded field to
> represent the parent ordinal of each taxonomy label. That is an old way and
> perhaps could be dated back to the time where doc values didn't exist.
> We probably would want to use NumericDocValues instead given we have spent
> quite a lot of effort optimizing them.
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