[ https://issues.apache.org/jira/browse/HDFS-5279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13782122#comment-13782122 ]
Suresh Srinivas commented on HDFS-5279: --------------------------------------- [~cnauroth], how about making a change in the web UI to say "NameNode is initializing" instead of giving either empty string or 0 as count when FSNamesystem is null? > 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-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. -- This message was sent by Atlassian JIRA (v6.1#6144)