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https://issues.apache.org/jira/browse/HDFS-3490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290382#comment-13290382
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Hadoop QA commented on HDFS-3490:
---------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12531138/h3490_20120606.patch
  against trunk revision .

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

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

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

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

    +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 
hadoop-hdfs-project/hadoop-hdfs.

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

Test results: 
https://builds.apache.org/job/PreCommit-HDFS-Build/2607//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/2607//console

This message is automatically generated.
                
> DN WebHDFS methods throw NPE if Namenode RPC address param not specified
> ------------------------------------------------------------------------
>
>                 Key: HDFS-3490
>                 URL: https://issues.apache.org/jira/browse/HDFS-3490
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 2.0.0-alpha
>            Reporter: Todd Lipcon
>            Assignee: Tsz Wo (Nicholas), SZE
>            Priority: Minor
>         Attachments: h3490_20120605.patch, h3490_20120606.patch
>
>
> Currently, there is no validation done on the NamenodeRpcAddressParam. If it 
> is not passed to the datanode webhdfs methods, an NPE will be generated 
> trying to use it. We should instead have some kind of validation on the 
> parameter and throw a more appropriate error message when it is missing.

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