Spark Exception: Python in worker has different version 3.4 than that in driver 3.5
<p>I am using Amazon EC2, and I have my master and development servers as one. And I have another instance for a single worker.</p>

<p>I am new to this, but I have managed to make spark work in a standalone mode. Now I am trying cluster. the master and worker are active (I can see the webUI for them and they are functioning).</p>

<p>I have Spark 2.0, and I have installed the latest Anaconda 4.1.1 which comes with Python 3.5.2. In both worker and master, if I go to pyspark and do os.version_info, I will get the 3.5.2, I also have set all the environment variables correctly (as seen in other posts on stackoverflow and google) (e.g., PYSPARK_PYTHON).</p>

<p>There is no 3.4 version of python anywhere anyways. So I am wondering how I can fix this. </p>

<p>I get the error by running this command:</p>

<pre><code>rdd = sc.parallelize([1,2,3])
rdd.count()    
</code></pre>

<p>error happens for the count() method:</p>

<pre><code>16/08/13 18:44:31 ERROR Executor: Exception in task 1.0 in stage 2.0 (TID 17)
org.apache.spark.api.python.PythonException: Traceback (most recent call last):
  File "/opt/spark/python/lib/pyspark.zip/pyspark/worker.py", line 123, in main
    ("%d.%d" % sys.version_info[:2], version))
Exception: Python in worker has different version 3.4 than that in driver 3.5, PySpark cannot run with different minor versions

at org.apache.spark.api.python.PythonRunner$$anon$1.read(PythonRDD.scala:193)
at org.apache.spark.api.python.PythonRunner$$anon$1.&lt;init&gt;(PythonRDD.scala:234)
at org.apache.spark.api.python.PythonRunner.compute(PythonRDD.scala:152)
at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:63)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:319)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:283)
at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70)
at org.apache.spark.scheduler.Task.run(Task.scala:85)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
16/08/13 18:44:31 ERROR Executor: Exception in task 1.1 in stage 2.0 (TID 18)
org.apache.spark.api.python.PythonException: Traceback (most recent call last):
  File "/opt/spark/python/lib/pyspark.zip/pyspark/worker.py", line 123, in main
    ("%d.%d" % sys.version_info[:2], version))
Exception: Python in worker has different version 3.4 than that in driver 3.5, PySpark cannot run with different minor versions
at org.apache.spark.api.python.PythonRunner$$anon$1.read(PythonRDD.scala:193)
at org.apache.spark.api.python.PythonRunner$$anon$1.&lt;init&gt;(PythonRDD.scala:234)
at org.apache.spark.api.python.PythonRunner.compute(PythonRDD.scala:152)
at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:63)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:319)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:283)
at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70)
at org.apache.spark.scheduler.Task.run(Task.scala:85)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
</code></pre>