[jira] [Resolved] (LUCENE-10573) Improve stored fields bulk merge for degenerate O(n^2) merges

["Adrien Grand (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-10573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrien Grand resolved LUCENE-10573.
-----------------------------------
    Resolution: Won't Fix

> 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: 0.5h
>  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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