https://community.cloudera.com/t5/Support-Questions/Spark-2-with-Python3-6-5-on-HDP-2-6-2/m-p/222570#M184440 <A rel="user" href="https://community.cloudera.com/users/99169/tyousaf.html" nodeid="99169">@Muhammad Taimoor Yousaf</A><P>You'd need to have a valid ticket in in the machine you are launching pyspark shell (which is test-m1). Looking at the exception it is clearly saying 'No valid credentials provided'. </P><P>Hope this helps. </P> Thu, 08 Nov 2018 16:39:10 GMT sandyy006 2018-11-08T16:39:10Z