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From "Hadoop QA (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 03:46:03 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13225811#comment-13225811
] 

Hadoop QA commented on HADOOP-8154:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12517597/hadoop-8154.txt
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed unit tests in .

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/691//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/691//console

This message is automatically generated.
                
> 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
>         Attachments: 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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