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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-6293) TimSort bug
Date Wed, 25 Feb 2015 16:47:05 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-6293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336738#comment-14336738
] 

Robert Muir commented on LUCENE-6293:
-------------------------------------

Lets fix the bug first and optimize later.

>From a software engineering perspective, this is the safest fix. 

Please, no high-risk fixes for low-risk bugs.


> TimSort bug
> -----------
>
>                 Key: LUCENE-6293
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6293
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-6293.patch
>
>
> Robert pointed me to http://envisage-project.eu/proving-android-java-and-python-sorting-algorithm-is-broken-and-how-to-fix-it/
yesterday which explains how most implementations of TimSort are broken. We should check our
TimSorter.



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