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Date: Sat, 29 Sep 2012 18:22:08 +1100 (NCT)
From: "Aaron T. Myers (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-3980) NPE in HttpURLConnection.java while
 starting SecondaryNameNode.
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    [ https://issues.apache.org/jira/browse/HDFS-3980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13466145#comment-13466145 ] 

Aaron T. Myers commented on HDFS-3980:
--------------------------------------

I've seen this error occur before with out-of-date keytab files, i.e. keytab files which contain info for principals (or KVNOs) which are no longer current. Brahma, could you please check on this possibility?
                
> NPE in HttpURLConnection.java while starting SecondaryNameNode.
> ---------------------------------------------------------------
>
>                 Key: HDFS-3980
>                 URL: https://issues.apache.org/jira/browse/HDFS-3980
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 3.0.0, 2.0.1-alpha
>            Reporter: Brahma Reddy Battula
>            Priority: Critical
>         Attachments: core-site.xml, hdfs-site.xml
>
>
> Scenario:
> ========
> I started secure cluster by going thru following..
> https://ccp.cloudera.com/display/CDHDOC/CDH3+Security+Guide..
> Here SecondaryNamenode is getting shutdown by throwing NPE..
> Please correct me If I am wrong...
> Will attach conf and logs..

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