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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5279) Guard against NullPointerException in NameNode JSP pages before initialization of FSNamesystem.
Date Wed, 02 Oct 2013 02:00:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13783576#comment-13783576
] 

Suresh Srinivas commented on HDFS-5279:
---------------------------------------

[~cnauroth], thanks for addressing the comments. +1 for the patch.

> Guard against NullPointerException in NameNode JSP pages before initialization of FSNamesystem.
> -----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5279
>                 URL: https://issues.apache.org/jira/browse/HDFS-5279
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0, 2.1.1-beta
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: HDFS-5279.1.patch, HDFS-5279.2.patch
>
>
> HDFS-4372 added tracking of NameNode startup progress.  As part of that change, the NameNode
HTTP server now starts before initialization of the {{FSNamesystem}}.  There are a few code
paths remaining in the JSP pages that are at risk of causing {{NullPointerException}} if accessed
when the {{FSNamesystem}} has not been fully initialized.



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