https://community.cloudera.com/t5/Support-Questions/Authentication-for-Amazon-s3-using-Temporary-credentials-STS/m-p/64250#M22582 <P>STS should work. I would try (1) using s3a, not s3n, and (2) building your spark app with the same AWS SDK version as used in the cluster.</P> Fri, 02 Feb 2018 06:57:04 GMT AaronFabbri 2018-02-02T06:57:04Z