Github user tgravescs commented on the pull request:
https://github.com/apache/spark/pull/8867#issuecomment-142976451
thanks for looking into that @SaintBacchus, that makes sense. I thought we
were logging in from the keytab again which would then switch it to be logged
in from keytab - see SparkSubmit:
// Let YARN know it's a pyspark app, so it distributes needed libraries.
if (clusterManager == YARN) {
if (args.isPython) {
sysProps.put("spark.yarn.isPython", "true")
}
if (args.principal != null) {
require(args.keytab != null, "Keytab must be specified when the
keytab is specified")
UserGroupInformation.loginUserFromKeytab(args.principal,
args.keytab)
}
}
perhaps that is somehow not changing the login type in the
UserGroupInformation though.
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