title: zeppelin-0.7.3 Interpreter pyspark not found
body: <p>I get the below error when I use pyspark via Zeppelin.</p>
  
  <p>The python &amp; spark interpreters work and all environment variables are set correctly.</p>
  
  <pre><code>print os.environ['PYTHONPATH']
  </code></pre>
  
  <blockquote>
    <p>/x01/spark_u/spark/python:/x01/spark_u/spark/python/lib/py4j-0.10.4-src.zip:/x01/spark_u/spark/python:/x01/spark_u/spark/python/lib/py4j-0.10.4-src.zip:/x01/spark_u/spark/python/lib/py4j-0.10.4-src.zip:/x01/spark_u/spark/python/lib/pyspark.zip:/x01/spark_u/spark/python:/x01/spark_u/spark/python/pyspark:/x01/spark_u/zeppelin/interpreter/python/py4j-0.9.2/src:/x01/spark_u/zeppelin/interpreter/lib/python</p>
  </blockquote>
  
  <p><code>zepplin-env.sh</code> is set with the below vars</p>
  
  <pre><code>export PYSPARK_PYTHON=/usr/local/bin/python2
  export PYTHONPATH=${SPARK_HOME}/python:${SPARK_HOME}/python/lib/py4j-0.10.4-src.zip:${PYTHONPATH}
  
  export SPARK_YARN_USER_ENV="PYTHONPATH=${PYTHONPATH}"
  </code></pre>
  
  <p>See the below log file</p>
  
  <blockquote>
    <p>INFO [2017-11-01 12:30:42,972] ({pool-2-thread-4}
    RemoteInterpreter.java[init]:221) - Create remote interpreter
    org.apache.zeppelin.spark.<strong>PySparkInterpreter</strong>
    org.apache.zeppelin.interpreter.InterpreterException:
    paragraph_1509038605940_-1717438251's <strong>Interpreter pyspark not
    found</strong></p>
  </blockquote>
  
  <p>Thank you in advance</p>