I am facing the same problem. I have installed numpy on all the nodes. And I am running it using YARN. In the directory /usr/bin I see python, python2, and python2.7. But only python2.7 is green in the list. echo $PYTHONPATH gave me empty string. Afterwards, I executed export PYTHONPATH=/usr/bin/python2.7 on each node. But still the my job submission exits with 'No module named numpy'. Any help? ... View more