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https://issues.apache.org/jira/browse/SPARK-12646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15091406#comment-15091406
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Hari Krishna Dara commented on SPARK-12646:
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In this environment, users don't have direct shell access and the Spark access
is going to be controlled via another frontend that uses different credentials.
This is how it is setup and I can't change it :(
> Support _HOST in kerberos principal for connecting to secure cluster
> --------------------------------------------------------------------
>
> Key: SPARK-12646
> URL: https://issues.apache.org/jira/browse/SPARK-12646
> Project: Spark
> Issue Type: Improvement
> Components: YARN
> Reporter: Hari Krishna Dara
> Priority: Minor
> Labels: security
>
> Hadoop supports _HOST as a token that is dynamically replaced with the actual
> hostname at the time the kerberos authentication is done. This is supported
> in many hadoop stacks including YARN. When configuring Spark to connect to
> secure cluster (e.g., yarn-cluster or yarn-client as master), it would be
> natural to extend support for this token to Spark as well.
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