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https://issues.apache.org/jira/browse/LUCENE-9228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17041259#comment-17041259
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ASF subversion and git services commented on LUCENE-9228:
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Commit 83ccb8d2a2204c78de0cf119d63ef452ef95fcc6 in lucene-solr's branch
refs/heads/branch_8x from Nhat Nguyen
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=83ccb8d ]
LUCENE-9228: Sort dvUpdates by terms before apply
With this change, we sort dvUpdates in the term order before applying if
they all update a single field to the same value. This optimization can
reduce the flush time by around 20% for the docValues update user cases.
> Sort docValues updates by terms before applying
> -----------------------------------------------
>
> Key: LUCENE-9228
> URL: https://issues.apache.org/jira/browse/LUCENE-9228
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Affects Versions: master (9.0), 8.5
> Reporter: Nhat Nguyen
> Priority: Major
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> If all DVUpdates update a single field to the same value, then we can apply
> these updates in the term order instead of the request order as both will
> yield the same result. This optimization allows us to iterate the term
> dictionary faster and de-duplicate updates.
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