[HDFS-5279] Guard against NullPointerException in NameNode JSP pages before initialization of FSNamesystem.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.1-beta, 3.0.0-alpha1
• Fix Version/s: 2.2.0
• Component/s: namenode
• Target Version/s: 2.1.1-beta
• Hadoop Flags: Reviewed
• Assignee: Chris Nauroth
• Reporter: Chris Nauroth
• Created: 30/Sep/13 18:54
• Updated: 12/May/16 18:12
• Resolved: 02/Oct/13 05:53

Description

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.

Issue Links

• is broken by: HDFS-4372 Track NameNode startup progress