[jira] [Created] (SPARK-12646) Support _HOST in kerberos principal for connecting to secure cluster

["Hari Krishna Dara (JIRA)" <ji...@apache.org>]

Hari Krishna Dara created SPARK-12646:
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             Summary: 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


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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