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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8154) DNS#getIPs shouldn't silently return the local host IP for bogus interface names
Date Fri, 09 Mar 2012 04:48:19 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13225836#comment-13225836
] 

Hudson commented on HADOOP-8154:
--------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #1863 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1863/])
    HADOOP-8154. DNS#getIPs shouldn't silently return the local host IP for bogus interface
names. Contributed by Eli Collins (Revision 1298696)

     Result = ABORTED
eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1298696
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/DNS.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/TestDNS.java

                
> DNS#getIPs shouldn't silently return the local host IP for bogus interface names
> --------------------------------------------------------------------------------
>
>                 Key: HADOOP-8154
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8154
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 0.23.3
>
>         Attachments: hadoop-8154-b1.txt, hadoop-8154.txt
>
>
> DNS#getIPs silently returns the local host IP for bogus interface names. In this case
let's throw an UnknownHostException. This is technically an incompatbile change. I suspect
the current behavior was origininally introduced so the interface name "default" works w/o
explicitly checking for it. It may also be used in cases where someone is using a shared config
file and an option like "dfs.datanode.dns.interface" or "hbase.master.dns.interface" and eg
interface "eth3" that some hosts don't have, though I think silently ignorning this is the
wrong behavior (those hosts should be configured to use a different interface).

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