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https://issues.apache.org/jira/browse/SPARK-12646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15087851#comment-15087851
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Apache Spark commented on SPARK-12646:
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User 'haridsv' has created a pull request for this issue:
https://github.com/apache/spark/pull/10647
> 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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