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Posted to notifications@accumulo.apache.org by "Christopher Tubbs (JIRA)" <ji...@apache.org> on 2018/02/14 21:55:00 UTC

[jira] [Commented] (ACCUMULO-4812) Dependency Conflict: different Jars contain the incompatible classes with the same name, which leads to NoSuchMethodException

    [ https://issues.apache.org/jira/browse/ACCUMULO-4812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16364829#comment-16364829 ] 

Christopher Tubbs commented on ACCUMULO-4812:
---------------------------------------------

Thanks for the notice! At the very least, we should caution our users to be careful about how they construct their class path for production.

> Dependency Conflict: different Jars contain the incompatible classes with the same name, which leads to NoSuchMethodException
> -----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ACCUMULO-4812
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4812
>             Project: Accumulo
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 2.0.0
>            Reporter: PandaMonkey
>            Priority: Major
>              Labels: releasenotes
>             Fix For: 2.0.0
>
>         Attachments: Conflicting details.txt
>
>
> Hi,  by analyzing the accumulo-core:2.0.0-SNAPSHOT  accumulo-master\core\pom.xml file, we found that several duplicate classes exist in different JARs: "commons-beanutils:commons-*beanutils-core*:1.8.0" and "commons-beanutils:commons-*beanutils*:1.7.0". As the JVM only load the classes present first on the classpath and shadow the other duplicate ones with the same name. It would throw the "*NoSuchMethodException*" or "*NoSuchMethodError*" if the duplicate classes are inconsistent! So we spend some energy to scan the different features between these duplicate classes. The conflicting details are listed in the attachment. Please pay attention to it. Hope our report can help you. Thanks :).
>  



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