Github user vanzin commented on the issue:
https://github.com/apache/spark/pull/17723
> but I am unsure about kubernetes (perusing their documentation left me
unsure) or any others
That's kinda orthogonal. This PR isn't Mesos-specific. Mesos, AFAICT, does
not support Kerberos (or so I've gathered from Michael's comments on JIRA and
here). But that has no bearing on whether applications running on Mesos can
talk to Hadoop services that use kerberos. So, this is purely about handling
Hadoop authentication for Hadoop services.
The authentication used to launch the application on Mesos has nothing to
do with the auth used to talk to HDFS or other services. The same applies if
you replace Mesos with any other cluster manager.
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