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Posted to issues@lucene.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2022/06/03 09:03:00 UTC

[jira] [Commented] (LUCENE-10574) Remove O(n^2) from TieredMergePolicy or change defaults to one that doesn't do this

    [ https://issues.apache.org/jira/browse/LUCENE-10574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17545794#comment-17545794 ] 

ASF subversion and git services commented on LUCENE-10574:
----------------------------------------------------------

Commit 3738beb038cc6153f09441038fd225b874397672 in lucene's branch refs/heads/main from Adrien Grand
[ https://gitbox.apache.org/repos/asf?p=lucene.git;h=3738beb038c ]

LUCENE-10574: Avoid O(n^2) merging with LogMergePolicy (#936)



> 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: 2h 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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