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https://issues.apache.org/jira/browse/LUCENE-10573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17537437#comment-17537437
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Robert Muir commented on LUCENE-10573:
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Fix TieredMergePolicy, don't hack around its shortcomings in the stored fields,
thats awful.
> Improve stored fields bulk merge for degenerate O(n^2) merges
> -------------------------------------------------------------
>
> Key: LUCENE-10573
> URL: https://issues.apache.org/jira/browse/LUCENE-10573
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Spin-off from LUCENE-10556.
> For small merges that are below the floor segment size, TieredMergePolicy may
> merge segments that have vastly different sizes, e.g. one 10k-docs segment
> with 9 100-docs segments.
> While we might be able to improve TieredMergePolicy (LUCENE-10569), there are
> also improvements we could make to stored fields, such as bulk-copying chunks
> of the first segment until the first dirty chunk. In this scenario where
> segments keep being rewritten, this would help significantly.
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