[dna-issues] [JBoss JIRA] Commented: (DNA-500) repositories example throws NoSuchMethodError due to conflicting log4j versions

[Ceki Gulcu (JIRA)]

    [ https://jira.jboss.org/jira/browse/DNA-500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12479048#action_12479048 ] 

Ceki Gulcu commented on DNA-500:
--------------------------------

Just for your information, SLF4J 1.5.7 contains a bug fix in relation with a serialization problem in jcl-over-slf4j. It's a relatively subtle problem and in my opinion worth the upgrade to 1.5.8.

> repositories example throws NoSuchMethodError due to conflicting log4j versions
> -------------------------------------------------------------------------------
>
>                 Key: DNA-500
>                 URL: https://jira.jboss.org/jira/browse/DNA-500
>             Project: DNA
>          Issue Type: Bug
>          Components: Examples
>    Affects Versions: 0.6
>         Environment: JBoss DNA revision 1142
> java version "1.6.0_0"
> OpenJDK Runtime Environment (IcedTea6 1.5) (ArchLinux-1.5-5-i686)
> OpenJDK Server VM (build 14.0-b15, mixed mode)
>            Reporter: torkjel hongve
>            Assignee: Randall Hauch
>             Fix For: 0.6
>
>
> When launching the repositories example (using run.sh from target/dna-example-repositories-basic.dir/) I immediately get the following error: 
> Exception in thread "Thread-1" java.lang.NoSuchMethodError: org.apache.log4j.Logger.isTraceEnabled()Z
>         at org.slf4j.impl.Log4jLoggerAdapter.isTraceEnabled(Log4jLoggerAdapter.java:81)
>         at org.jboss.dna.common.util.Logger.isTraceEnabled(Logger.java:411)
>         at org.jboss.dna.graph.connector.map.MapRepositoryConnection.execute(MapRepositoryConnection.java
> etc...
> This is due to the lib direcotry containing both log4j-1.2.14.jar and log4j-1.2.8.jar. 1.2.14 is the correct one and contains the isTraceEnabled method, but version 1.2.8 is the one being used at runtime. 
> "mvn dependency:tree" shows the following dependendy paths to log4j: 
> [INFO] +- log4j:log4j:jar:1.2.14:compile
> [INFO] +- org.jboss.security:jbosssx-bare:jar:2.0.2.SP6:compile
> [INFO] |  +- org.jboss.security:jboss-security-acl-impl:jar:2.0.2.SP6:compile
> [INFO] |  |  +- jboss:jboss-logging-log4j:jar:2.0.2.GA:runtime
> [INFO] |  |  |  \- apache-log4j:log4j:jar:1.2.8:runtime

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