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https://issues.apache.org/jira/browse/HADOOP-8414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13281752#comment-13281752
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Ivan Mitic commented on HADOOP-8414:
------------------------------------

Thanks Daryn, some answers/comments inline.

Could you please do the same testing with InetAddress.getByName("localhost") to 
ensure that something else isn't botching the hostname to 127.0.0.1?
@Daryn: Same result as with null.

The HarFileSystem change is probably worthy of its own jira now since it's 
generally useful and should be able to stand alone w/o the other changes in 
this jira
@Daryn: Sure.

I forgot to mention that if the discrepancy with window's resolution of 
localhost is likely to break host-based tokens 
(hadoop.security.token.service.use_ip=false). We'll need to be sure to test 
host-based tokens if the discrepancy is real and can't be fixed.
@Daryn: I see, thanks for bringing this up. Do you maybe know of a test that 
can catch this?
                
> Address problems related to localhost resolving to 127.0.0.1 on Windows
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-8414
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8414
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs, test
>    Affects Versions: 1.0.0
>            Reporter: Ivan Mitic
>            Assignee: Ivan Mitic
>         Attachments: HADOOP-8414-branch-1-win.patch, 
> HADOOP-8414-branch-1-win.patch
>
>
> Localhost resolves to 127.0.0.1 on Windows and that causes the following 
> tests to fail:
>  - TestHarFileSystem
>  - TestCLI
>  - TestSaslRPC
> This Jira tracks fixing these tests and other possible places that have 
> similar issue.

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