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From "Uwe Schindler (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3204) solr-commons-csv must not use the org.apache.commons.csv package
Date Wed, 07 Mar 2012 20:33:02 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13224683#comment-13224683
] 

Uwe Schindler commented on SOLR-3204:
-------------------------------------

bq. For JAR hell, I thought even released versions can cause problems too?

Yes of course. But e.g. maven can help to prevent those problems. It will not allow you to
add the same dependency in different versions. The issue we had caused by our separate release
of unreleased package under the solr group-id was that maven is seeing our repackaged dependency
under another artifact id - so it cannot prevent that a project adds solr-commons-xx, version-foo
and commony-xx, version-bar, because it is two different things.
                
> solr-commons-csv must not use the org.apache.commons.csv package
> ----------------------------------------------------------------
>
>                 Key: SOLR-3204
>                 URL: https://issues.apache.org/jira/browse/SOLR-3204
>             Project: Solr
>          Issue Type: Bug
>          Components: Build
>    Affects Versions: 3.5
>            Reporter: Emmanuel Bourg
>            Priority: Blocker
>             Fix For: 3.6
>
>         Attachments: SOLR-3204.patch, SOLR-3204.patch, SOLR-3204.patch, apache-solr-commons-csv-1.0-SNAPSHOT-r966014.jar,
rule.txt, rule.txt, solr-csv.patch
>
>
> The solr-commons-csv artifact reused the code from the Apache Commons CSV project but
the package wasn't changed to something else than org.apache.commons.csv in the process. This
creates a compatibility issue as the Apache Commons team works toward an official release
of Commons CSV. It prevents Commons CSV from using its own org.apache.commons.csv package,
or forces the renaming of all the classes to avoid a classpath conflict.

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