intellij idea - Trying to find org.apache.hadoop.io.LongWritable -

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I am trying to create a simple project with hadoop I'm new to IntelliJ and I have org.apache.hadoop

I'm trying to set the .password class. But what is the jar in this class?

I got a sample javac command that was classpath 

  - Classpath $ {HADOOP_HOME} / thaup - $ {HADOOP_VERSION} -core.or

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