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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8878) uppercase namenode hostname causes hadoop dfs calls with webhdfs filesystem and fsck to fail when security is on
Date Tue, 09 Oct 2012 09:38:02 GMT

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Steve Loughran commented on HADOOP-8878:
----------------------------------------

-1: needs to use {{String.toLowerCase(Locale.EN_US)}} to work reliably round the world. You
don't want to field unreplicable support cases from Turkey.
                
> 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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