As a workaround for
SPARK-19038 tried putting keytab in user's home directory in HDFS but this fails with
This is yarn-client mode, so driver probably can't see HDFS while submitting a job; although I suspect it doesn't not only with yarn-client.
Would be great to support reading keytab for kerberos ticket renewals directly from HDFS.
We think that in some scenarios it's more secure than referencing a keytab from a local fs on a client machine that does a spark-submit.