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Posted to hdfs-dev@hadoop.apache.org by "Aaron T. Myers (Created) (JIRA)" <ji...@apache.org> on 2011/12/27 07:06:30 UTC

[jira] [Created] (HDFS-2724) NN web UI can throw NPE after startup, before standby state is entered

NN web UI can throw NPE after startup, before standby state is entered
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                 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: Eli Collins


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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[jira] [Resolved] (HDFS-2724) NN web UI can throw NPE after startup, before standby state is entered

Posted by "Todd Lipcon (Resolved) (JIRA)" <ji...@apache.org>.
     [ 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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