[jira] [Commented] (KYLIN-4656) Guava classpath conflict caused by kylin-jdbc 3.1.0 jar

["Yaqian Zhang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KYLIN-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17163171#comment-17163171 ] 

Yaqian Zhang commented on KYLIN-4656:
-------------------------------------

Hi Gabor：
I don't seem to understand what you mean. Is there an error log to let us know the details? 
kylin-jdbc 3.1.0.jar use a shaded guava replaced guava, and the shaded guava is 28.2-jre. 

> Guava classpath conflict caused by kylin-jdbc 3.1.0 jar
> -------------------------------------------------------
>
>                 Key: KYLIN-4656
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4656
>             Project: Kylin
>          Issue Type: Bug
>          Components: Driver - JDBC
>    Affects Versions: v3.1.0
>            Reporter: Gabor Arki
>            Priority: Critical
>
> The newly released kylin-jdbc 3.1.0 jar contains a shaded, non-repackaged version of the Guava library. This is causing class duplication with the original guava jar if it is also on the classpath which results in non-deterministic, runtime errors depending on which version of a certain guava class has been picked up by the class-loader from the 2 versions. Based on the runtime errors of the missing classes and methods, it seems to be a very old version, probably <=14.
>  
> Either implement a proper shading with package relocation or rely on transitive dependency, but do not shade non-repackaged versions of libraries.



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