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https://issues.apache.org/jira/browse/ORC-240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16184466#comment-16184466
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ASF GitHub Bot commented on ORC-240:
------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/orc/pull/172
> fix warnings from Maven
> -----------------------
>
> Key: ORC-240
> URL: https://issues.apache.org/jira/browse/ORC-240
> Project: ORC
> Issue Type: Bug
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 1.5.0
>
>
> Currently we see a few warnings from Maven.
> {code:java}
> [WARNING] Some problems were encountered while building the effective model
> for org.apache.orc:orc-shims:jar:1.5.0-SNAPSHOT
> [WARNING] 'build.pluginManagement.plugins.plugin.(groupId:artifactId)' must
> be unique but found duplicate declaration of plugin
> org.apache.maven.plugins:maven-compiler-plugin @
> org.apache.orc:orc:1.5.0-SNAPSHOT, /Users/owen/work/code/orc/java/pom.xml,
> line 247, column 17
> [WARNING]
> [WARNING] Some problems were encountered while building the effective model
> for org.apache.orc:orc:pom:1.5.0-SNAPSHOT
> [WARNING] 'build.pluginManagement.plugins.plugin.(groupId:artifactId)' must
> be unique but found duplicate declaration of plugin
> org.apache.maven.plugins:maven-compiler-plugin @ line 247, column 17
> [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.
> [WARNING]
> [WARNING] The project org.apache.orc:orc:pom:1.5.0-SNAPSHOT uses
> prerequisites which is only intended for maven-plugin projects but not for
> non maven-plugin projects. For such purposes you should use the
> maven-enforcer-plugin. See
> https://maven.apache.org/enforcer/enforcer-rules/requireMavenVersion.html
> {code}
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