[HADOOP-7114] FsShell should dump all exceptions at DEBUG level

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.0
• Component/s: fs
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 20/Jan/11 22:07
• Updated: 15/Nov/11 00:50
• Resolved: 02/Mar/11 17:10

Description

Most of the FsShell commands catch exceptions and then just print out an error like "foo: " + e.getLocalizedMessage(). This is fine when the exception is "user-facing" (eg permissions errors) but in the case of a user hitting a bug you get a useless error message with no stack trace. For example, something "chmod: null" in the case of a NullPointerException bug.

It would help debug these cases for users and developers if we also logged the exception with full trace at DEBUG level.