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https://issues.apache.org/jira/browse/SPARK-21124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16052409#comment-16052409
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Marcelo Vanzin commented on SPARK-21124:
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Also, the SPARK-14483 also masks which is the actual user the application
running in the cluster is (i.e. who actually is writing files).
The thrift server doesn't do per-job impersonation, as far as I know, so it
would still be useful to show the kerberos user the application is running as
somewhere.
> Wrong user shown in UI when using kerberos
> ------------------------------------------
>
> Key: SPARK-21124
> URL: https://issues.apache.org/jira/browse/SPARK-21124
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 2.2.0
> Reporter: Marcelo Vanzin
> Priority: Minor
>
> When submitting an app to a kerberos-secured cluster, the OS user and the
> user running the application may differ. Although it may also happen in
> cluster mode depending on the cluster manager's configuration, it's more
> common in client mode.
> The UI should show enough information about user running the application to
> correctly identify the actual user. The "app user" can be easily retrieved
> via {{Utils.getCurrentUserName()}}, so it's mostly a matter of how to record
> this information (for showing in replayed applications) and how to present it
> in the UI.
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