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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9520) _HOST doesn't resolve to bound interface
Date Wed, 01 May 2013 14:06:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646598#comment-13646598

Daryn Sharp commented on HADOOP-9520:

I'm interested in the patch.  We currently hard code the hostname of the principal on multi-NIC
servers, but not on clients.
> _HOST doesn't resolve to bound interface
> ----------------------------------------
>                 Key: HADOOP-9520
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9520
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.0.4-alpha
>            Reporter: Allen Wittenauer
> _HOST appears to ignore bound interfaces.  For example, if a host has two interfaces
such that:
> nic0 = gethostname()
> nic1 = someothername
> and then I configure the namenode or resource manager to use someothername:####, the
system still treats _HOST = nic0.  This is especially harmful for Kerberos principals.

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