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https://issues.apache.org/jira/browse/SPARK-25355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17027801#comment-17027801
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Dongjoon Hyun commented on SPARK-25355:
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[~pedro.rossi]. 2.4.x is maintained, but Apache Spark doesn't allow a
backporting of new feature.
If your new PR is a redundant code at 3.0.0, we cannot merge it.
> Support --proxy-user for Spark on K8s
> -------------------------------------
>
> Key: SPARK-25355
> URL: https://issues.apache.org/jira/browse/SPARK-25355
> Project: Spark
> Issue Type: New Feature
> Components: Kubernetes
> Affects Versions: 3.0.0
> Reporter: Stavros Kontopoulos
> Priority: Major
>
> SPARK-23257 adds kerberized hdfs support for Spark on K8s. A major addition
> needed is the support for proxy user. A proxy user is impersonated by a
> superuser who executes operations on behalf of the proxy user. More on this:
> [https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/Superusers.html]
> [https://github.com/spark-notebook/spark-notebook/blob/master/docs/proxyuser_impersonation.md]
> This has been implemented for Yarn upstream and Spark on Mesos here:
> [https://github.com/mesosphere/spark/pull/26]
> [~ifilonenko] creating this issue according to our discussion.
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