[HADOOP-6400] Log errors getting Unix UGI

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.20.1, 0.21.0, 0.22.0
• Fix Version/s: 0.21.0
• Component/s: security
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 01/Dec/09 02:21
• Updated: 24/Aug/10 20:41
• Resolved: 03/Dec/09 01:14

Description

For various reasons, the calls out to `whoami` and `id` can fail when trying to get the unix UGI information. Currently it silently ignores failures and uses the default DrWho/Tardis ugi. This is extremely confusing for users - we should log the exception at warn level when the shell execs fail.