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Date: Tue, 14 Feb 2012 17:59:59 +0000 (UTC)
From: "Todd Lipcon (Assigned) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Assigned] (HDFS-2948) HA: NN throws NPE during shutdown if
 it fails to startup
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     [ https://issues.apache.org/jira/browse/HDFS-2948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon reassigned HDFS-2948:
---------------------------------

    Assignee: Todd Lipcon
    
> HA: NN throws NPE during shutdown if it fails to startup
> --------------------------------------------------------
>
>                 Key: HDFS-2948
>                 URL: https://issues.apache.org/jira/browse/HDFS-2948
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>         Attachments: hdfs-2948.txt
>
>
> Last night's nightly build had a bunch of NPEs thrown in NameNode.stop. Not sure which patch introduced the issue, but the problem is that NameNode.stop() is called if an exception is thrown during startup. If the exception is thrown before the namesystem is created, then NameNode.namesystem is null, and {{namesystem.stop}} throws NPE.

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