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  1. ,
    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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org/apache/spark/JavaSparkListener
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JavaWordCount (wrong name: org/apache/spark/examples/JavaWordCount)
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org/apache/spark/Logging
via Stack Overflow by Feng Ye
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org/apache/tomcat/JarScanner
java.lang.ClassNotFoundException: org.apache.spark.Logging	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:760)	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$1.run(URLClassLoader.java:362)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:348)	at org.apache.spark.util.Utils$.classForName(Utils.scala:225)	at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:686)	at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:185)	at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:210)	at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:124)	at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)