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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8878) uppercase namenode hostname causes hadoop dfs calls with webhdfs filesystem to fail when security is on
Date Thu, 04 Oct 2012 14:07:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13469393#comment-13469393
] 

Daryn Sharp commented on HADOOP-8878:
-------------------------------------

+1 Although I'd suggest breaking out some of the code into a new method to allow a unit test
to be written.
                
> uppercase namenode hostname causes hadoop dfs calls with webhdfs filesystem 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.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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