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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-5850) Constants#LUCENE_MAIN_VERSION can have broken values
Date Wed, 30 Jul 2014 12:42:38 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-5850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14079248#comment-14079248
] 

Robert Muir commented on LUCENE-5850:
-------------------------------------

We do agree on that. We also need to simplify it though. Having multiple ways to compare versions
(e.g. Version.compare vs StringHelper.versionComparator) etc is really bad. 

I think its equally bad to "downgrade" 4.8.1 to 4.8 because we have two apis (versus having
one unified enum api). Its still buggy if you do the wrong thing, so if previous mistakes
are repeated again, like the ones that motivated this issue, it will still be equally buggy,
just buggy in a different way.

> Constants#LUCENE_MAIN_VERSION can have broken values 
> -----------------------------------------------------
>
>                 Key: LUCENE-5850
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5850
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: general/build
>    Affects Versions: 4.3.1, 4.5.1
>            Reporter: Simon Willnauer
>             Fix For: 5.0, 4.10
>
>         Attachments: LUCENE-5850.patch, LUCENE-5850.patch, LUCENE-5850_bomb.patch, LUCENE-5850_smoketester.patch
>
>
> Constants#LUCENE_MAIN_VERSION is set to the Lucene Main version and should not contain
minor versions. Well this is at least what I thought and to my knowledge what the comments
say too. Yet in for instance 4.3.1 and 4.5.1 we broke this such that the version from SegmentsInfo
can not be parsed with Version#parseLeniently. IMO we should really add an assertion that
this constant doesn't throw an error and / or make the smoketester catch this. to me this
is actually a index BWC break. Note that 4.8.1 doesn't have this problem...



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