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https://issues.apache.org/jira/browse/AMBARI-18491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15649913#comment-15649913
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Sumit Mohanty commented on AMBARI-18491:
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Committed to branch-2.4 as well as the fixVersion is 2.4.2
> Spark user principal name is not always lowercase in HDP 2.5
> ------------------------------------------------------------
>
> Key: AMBARI-18491
> URL: https://issues.apache.org/jira/browse/AMBARI-18491
> Project: Ambari
> Issue Type: Bug
> Reporter: Andrew Onischuk
> Assignee: Andrew Onischuk
> Fix For: 2.4.2
>
> Attachments: AMBARI-18491.patch
>
>
> The Spark principal name is not always lowercase in HDP 2.5.
> This is because the principal definition does not specify `toLower` in the HDP
> 2.5 specific Kerberos descriptor:
> **stacks/HDP/2.5/services/SPARK/kerberos.json:12**
>
>
>
> "value": "${spark-env/spark_user}-${cluster_name}@${realm}",
>
> Should be:
> **stacks/HDP/2.5/services/SPARK/kerberos.json:12**
>
>
>
> "value": "${spark-env/spark_user}-${cluster_name|toLower()}@${realm}",
>
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