title: Hadoop 2.7.3 Streaming Jar not valid
body: <p>I am very new to Hadoop and was trying to run a simple program using <a href="http://www.michael-noll.com/tutorials/writing-an-hadoop-mapreduce-program-in-python/" rel="nofollow noreferrer">this</a>.</p>
  
  <p>I have copied the local example data to hdfs, but during my map reduce job when I am running this command as per the official apache documentation</p>
  
  <pre><code>hadoop jar hadoop-streaming-2.7.3.jar \
  -input /user/hduser/gutenberg/* \
  -output /user/hduser/gutenberg-output \
  -mapper /home/hduser/mapper.py \
  -reducer /home/hduser/reducer.py
  </code></pre>
  
  <p>I am getting this error</p>
  
  <blockquote>
    <p>Not a valid JAR: /usr/lib/hadoop-streaming-2.7.3.jar</p>
  </blockquote>
  
  <p>Please try to help me.</p>