java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.hadoop.examples.WordCount$TokenizerMapper

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Samebug tips

,
Expert tip

This might be an issue with the file location in the Spark submit command. Try it with

spark-submit --master spark://master:7077 \
     hello_world_from_pyspark.py {file location}

,

You are not deploying the oracle driver with the application. Place the driver jars in a shared or library extension folder of your application server. (You should go with option one or two though

Solutions on the web

via Spring JIRA by xinshengjun, 1 year ago
java.lang.ClassNotFoundException: org.apache.hadoop.examples.WordCount$TokenizerMapper
via Spring JIRA by xinshengjun, 1 year ago
java.lang.ClassNotFoundException: org.apache.hadoop.examples.WordCount$TokenizerMapper
via Stack Overflow by abhinavkulkarni
, 2 years ago
java.lang.ClassNotFoundException: MapClass
via petrikainulainen.net by Unknown author, 10 months ago
java.lang.ClassNotFoundException: net.petrikainulainen.spring.data.apachehadoop.WordMapper
via Stack Overflow by SangminKim
, 2 years ago
java.lang.ClassNotFoundException: mapred.MaxTemperatureMapper_v1
via petrikainulainen.net by Unknown author, 1 year ago
java.lang.ClassNotFoundException: net.petrikainulainen.spring.data.apachehadoop.WordMapper
java.lang.ClassNotFoundException: org.apache.hadoop.examples.WordCount$TokenizerMapper
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:819)

Users with the same issue

Once, 1 week ago
Once, 1 month ago
Once, 2 months ago
Once, 2 months ago
5 times, 2 months ago

Write tip

Know the solutions? Share your knowledge to help other developers to debug faster.