[HDFS-2328] hftp throws NPE if security is not enabled on remote cluster

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.20.205.0
• Fix Version/s: 0.20.205.0
• Assignee: Owen O'Malley
• Reporter: Daryn Sharp
• Created: 13/Sep/11 15:19
• Updated: 19/Oct/11 00:25
• Resolved: 14/Sep/11 16:02

Description

If hftp cannot locate either a hdfs or hftp token in the ugi, it will call getDelegationToken to acquire one from the remote nn. This method may return a null Token if security is disabled on the remote nn. Hftp will internally call its setDelegationToken which will throw a NPE when the token is null.

Actually, if any problem happens while acquiring the token it assumes security is disabled! However, it's a pre-existing issue beyond the scope of the token renewal changes.

Issue Links

• is broken by: MAPREDUCE-2764 Fix renewal of dfs delegation tokens