Github user davies commented on the pull request:
https://github.com/apache/spark/pull/5173#issuecomment-93510822
@shaananc It seems that you are using Python3 in the driver, but python2 in
YARN. PySpark can not work with different minor versions in driver and worker.
So you could specify the Python version by:
```
PYSPARK_PYTHON=python2 bin/spark-submit xxx
```
Or change the default version to python3 in YARN.
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