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

["Eli Collins (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-2724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182701#comment-13182701 ] 

Eli Collins commented on HDFS-2724:
-----------------------------------

+1 lgtm, I like INITIALIZING better
                
> 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
>         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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