Github user rvesse commented on a diff in the pull request:
https://github.com/apache/spark/pull/20167#discussion_r161484346
--- Diff:
resource-managers/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerUtils.scala
---
@@ -80,10 +80,27 @@ trait MesosSchedulerUtils extends Logging {
}
fwInfoBuilder.setHostname(Option(conf.getenv("SPARK_PUBLIC_DNS")).getOrElse(
conf.get(DRIVER_HOST_ADDRESS)))
+ conf.getOption("spark.mesos.principal.file")
--- End diff --
We have customers who operate secure multi-tenant environments who consider
even leaking principals of users from other tenants to be a security issue i.e.
they want to minimise what users from one tenant can learn about users from
another
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