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https://issues.apache.org/jira/browse/HDFS-2948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved HDFS-2948.
-------------------------------
Resolution: Fixed
Fix Version/s: HA branch (HDFS-1623)
Hadoop Flags: Reviewed
Committed to ha branch, thanks ATM
> 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
> Fix For: HA branch (HDFS-1623)
>
> 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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