java.lang.NoClassDefFoundError: org.jruby.util.ByteList

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via netty.io by Unknown author

Needs to add netty-transport-native-epoll with a OS classifier to the classpath, it's not included in netty-all

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java.lang.ClassNotFoundException: java.util.concurrent.ConcurrentMap not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:logstash-1.1.9-monolithic.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.7rh)
at java.lang.ClassLoader.loadClass(libgcj.so.7rh)
at java.lang.ClassLoader.loadClass(libgcj.so.7rh)

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