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https://issues.apache.org/jira/browse/HDFS-7362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Payne resolved HDFS-7362.
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Resolution: Duplicate
This is not exactly a dup of HADOOP-10817, but changes made for HADOOP-10817
fixed this issue.
> Proxy user refresh won't modify or remove existing groups or hosts from super
> user list
> ---------------------------------------------------------------------------------------
>
> Key: HDFS-7362
> URL: https://issues.apache.org/jira/browse/HDFS-7362
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.5.0
> Reporter: Eric Payne
> Assignee: Eric Payne
>
> 2.x added a new DefaultImpersonationProvider class for reading the superuser
> configuration. In this class, once the host and group properties for a
> proxyuser are defined, they cannot be removed or modified without bouncing
> the daemon.
> As long as the config is updated correctly the first time, this problem won't
> manifest itself. Once defined, these properties don't tend to change.
> However, if the properties are mis-entered the first time, restarting the
> NN/RM/JHS/etc will be necessary to correctly re-read the config. An admin
> refresh won't do it.
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