[jira] [Commented] (LOG4J2-1876) Unreliable checking for runtime dependencies

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[jira] [Commented] (LOG4J2-1876) Unreliable checking for runtime dependencies

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/LOG4J2-1876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964502#comment-15964502 ]

Matt Sicker commented on LOG4J2-1876:
-------------------------------------

That would be appropriate. Also, I don't think you meant to assign this to me?

> Unreliable checking for runtime dependencies
> --------------------------------------------
>
>                 Key: LOG4J2-1876
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1876
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.8.2
>            Reporter: Mikael StÃ¥ldal
>            Assignee: Matt Sicker
>
> If I include this in Maven POM:
> {code}
> <dependency>
>     <groupId>com.fasterxml.jackson.core</groupId>
>     <artifactId>jackson-databind</artifactId>
>     <version>2.8.7</version>
>     <scope>runtime</scope>
>     <exclusions>
>         <exclusion>
>             <groupId>com.fasterxml.jackson.core</groupId>
>             <artifactId>jackson-core</artifactId>
>         </exclusion>
>     </exclusions>
> </dependency>
> {code}
> I get this printed on STDERR on startup:
> {code}
> Unknown error checking for existence of class: com.fasterxml.jackson.databind.ObjectMapper
> java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/Versioned
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:264)
> at org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:141)
> at org.apache.logging.log4j.util.LoaderUtil.isClassAvailable(LoaderUtil.java:115)
> at org.apache.logging.log4j.core.util.Loader.isClassAvailable(Loader.java:310)
> at org.apache.logging.log4j.core.config.yaml.YamlConfigurationFactory.<init>(YamlConfigurationFactory.java:47)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at org.apache.logging.log4j.core.util.ReflectionUtil.instantiate(ReflectionUtil.java:188)
> at org.apache.logging.log4j.core.config.ConfigurationFactory.addFactory(ConfigurationFactory.java:190)
> at org.apache.logging.log4j.core.config.ConfigurationFactory.getInstance(ConfigurationFactory.java:164)
> at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:613)
> at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:634)
> at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:229)
> at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:242)
> at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)
> at org.apache.logging.log4j.LogManager.getContext(LogManager.java:174)
> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:618)
> at logtest.Main.<clinit>(Main.java:14)
> Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.Versioned
> at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> ... 33 more
> Unknown error checking for existence of class: com.fasterxml.jackson.databind.ObjectMapper
> java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/Versioned
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:264)
> at org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:141)
> at org.apache.logging.log4j.util.LoaderUtil.isClassAvailable(LoaderUtil.java:115)
> at org.apache.logging.log4j.core.util.Loader.isClassAvailable(Loader.java:310)
> at org.apache.logging.log4j.core.config.json.JsonConfigurationFactory.<init>(JsonConfigurationFactory.java:49)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at org.apache.logging.log4j.core.util.ReflectionUtil.instantiate(ReflectionUtil.java:188)
> at org.apache.logging.log4j.core.config.ConfigurationFactory.addFactory(ConfigurationFactory.java:190)
> at org.apache.logging.log4j.core.config.ConfigurationFactory.getInstance(ConfigurationFactory.java:164)
> at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:613)
> at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:634)
> at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:229)
> at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:242)
> at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)
> at org.apache.logging.log4j.LogManager.getContext(LogManager.java:174)
> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:618)
> at logtest.Main.<clinit>(Main.java:14)
> Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.Versioned
> at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> ... 33 more
> {code}



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