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https://issues.apache.org/jira/browse/HDFS-9488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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KWON BYUNGCHANG resolved HDFS-9488.
-----------------------------------
Resolution: Duplicate
> When dfsadmin -refreshUserToGroupsMappings, It does not reload
> hadoop.user.group.static.mapping.overrides config.
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-9488
> URL: https://issues.apache.org/jira/browse/HDFS-9488
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.7.1
> Reporter: KWON BYUNGCHANG
> Priority: Minor
> Attachments: HDFS-9488.01.patch
>
>
> My environment does not allow add user/group. I can't rely os user/group
> mechanism.
> and I don’t want to show below log.
> {code}
> 2015-11-26 13:21:48,486 WARN security.UserGroupInformation
> (UserGroupInformation.java:getGroupNames(1521)) - No groups available for
> user hello
> {code}
> I append {{org.apache.hadoop.security.SimpleUserGroupsMapping}}.
> It is very simple. group of some user is user. user is same group.
> if some users should be same group, use
> {{hadoop.user.group.static.mapping.overrides=user1=group;user2=group}}
> problem is when {{hdfs dfsadmin -refreshUserToGroupsMappings}}, it does not
> reload that config.
> Thank you.
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