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