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From "Todd Lipcon (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-2724) NN web UI can throw NPE after startup, before standby state is entered
Date Tue, 10 Jan 2012 03:47:39 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon resolved HDFS-2724.
-------------------------------

       Resolution: Fixed
    Fix Version/s: HA branch (HDFS-1623)
     Hadoop Flags: Reviewed

Committed to branch, thanks Eli.
                
> NN web UI can throw NPE after startup, before standby state is entered
> ----------------------------------------------------------------------
>
>                 Key: HDFS-2724
>                 URL: https://issues.apache.org/jira/browse/HDFS-2724
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Aaron T. Myers
>            Assignee: Todd Lipcon
>             Fix For: HA branch (HDFS-1623)
>
>         Attachments: hdfs-2724.txt
>
>
> There's a brief period of time (a few seconds) after the NN web server has been initialized,
but before the NN's HA state is initialized. If {{dfshealth.jsp}} is hit during this time,
a {{NullPointerException}} will be thrown.

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