[jira] [Created] (HDFS-9488) When dfsadmin -refreshUserToGroupsMappings, It does not reload hadoop.user.group.static.mapping.overrides config.

[KWON BYUNGCHANG (JIRA)]

KWON BYUNGCHANG created HDFS-9488:
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             Summary: 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



My environmental 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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