Stephen Chu created HDFS-4026:
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             Summary: Improve error message for dfsadmin -refreshServiceAcl
                 Key: HDFS-4026
                 URL: https://issues.apache.org/jira/browse/HDFS-4026
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.0.1-alpha
            Reporter: Stephen Chu


I ran _hdfs dfsadmin -refreshServiceAcl_ on a cluster that did not have Service 
Level Authorization enabled:

{code}
[schu@cs-10-20-90-154 ~]$ hdfs dfsadmin -refreshServiceAcl
refreshServiceAcl: 
[schu@cs-10-20-90-154 ~]$ echo $?
255
[schu@cs-10-20-90-154 ~]$ 
{code}

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