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https://issues.apache.org/jira/browse/HADOOP-8878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Gupta updated HADOOP-8878:
--------------------------------

    Status: Patch Available  (was: Open)
    
> uppercase namenode hostname causes hadoop dfs calls with webhdfs filesystem 
> and fsck to fail when security is on
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8878
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8878
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 1.0.3, 1.1.0, 1.2.0, 3.0.0
>            Reporter: Arpit Gupta
>            Assignee: Arpit Gupta
>         Attachments: HADOOP-8878.branch-1.patch, HADOOP-8878.branch-1.patch, 
> HADOOP-8878.patch, HADOOP-8878.patch
>
>
> This was noticed on a secure cluster where the namenode had an upper case 
> hostname and the following command was issued
> hadoop dfs -ls webhdfs://NN:PORT/PATH
> the above command failed because delegation token retrieval failed.
> Upon looking at the kerberos logs it was determined that we tried to get the 
> ticket for kerberos principal with upper case hostnames and that host did not 
> exit in kerberos. We should convert the hostnames to lower case. Take a look 
> at HADOOP-7988 where the same fix was applied on a different class.
> I have noticed this issue exists on branch-1. Will investigate trunk and 
> branch-2 and update accordingly.

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