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https://issues.apache.org/jira/browse/NUTCH-1809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julien Nioche resolved NUTCH-1809.
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Resolution: Duplicate
> Duplicate jdom dependency
> --------------------------
>
> Key: NUTCH-1809
> URL: https://issues.apache.org/jira/browse/NUTCH-1809
> Project: Nutch
> Issue Type: Bug
> Reporter: Valerio Schiavoni
>
> The dependency to jdom is declared twice in the pom.xml, first time at lines
> 202-207, second time at lines 257-261.
> The double declaration causes Maven to report the following warning:
> [WARNING] Some problems were encountered while building the effective model
> for org.apache.nutch:nutch:jar:2.2
> [WARNING] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must
> be unique: org.jdom:jdom:jar -> duplicate declaration of version 1.1 @ line
> 256, column 29
> [WARNING]
> [WARNING] It is highly recommended to fix these problems because they
> threaten the stability of your build.
> [WARNING]
> [WARNING] For this reason, future Maven versions might no longer support
> building such malformed projects.
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