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https://issues.apache.org/jira/browse/LUCENE-10574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17539354#comment-17539354
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ASF subversion and git services commented on LUCENE-10574:
----------------------------------------------------------

Commit bf07d98f13043860d5dffae094eacd6bb113fdde in lucene's branch 
refs/heads/main from Adrien Grand
[ https://gitbox.apache.org/repos/asf?p=lucene.git;h=bf07d98f130 ]

LUCENE-10574: Fix test failure.

LogDocMergePolicy would previously always force-merge an index that has 10
segments of size 1 to 10, due to the min doc count. This is not the case
anymore, but the test was assuming that such an index would get merged, so I
fixed the test's expectations.

Also changed the merge policy to keep working when RAM buffers are flushed in
such a way that segments do not appear in decreasing size order using the same
logic as LogMergePolicy.


> Remove O(n^2) from TieredMergePolicy or change defaults to one that doesn't 
> do this
> -----------------------------------------------------------------------------------
>
>                 Key: LUCENE-10574
>                 URL: https://issues.apache.org/jira/browse/LUCENE-10574
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>            Priority: Major
>             Fix For: 9.3
>
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> Remove {{floorSegmentBytes}} parameter, or change lucene's default to a merge 
> policy that doesn't merge in an O(n^2) way.
> I have the feeling it might have to be the latter, as folks seem really wed 
> to this crazy O(n^2) behavior.



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