[HADOOP-8525] Provide Improved Traceability for Configuration

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 0.23.3, 2.0.2-alpha
• Target Version/s: 0.23.3
• Assignee: Robert Joseph Evans
• Reporter: Robert Joseph Evans
• Created: 21/Jun/12 20:40
• Updated: 02/May/13 02:29
• Resolved: 10/Jul/12 17:08

Description

Configuration provides basic traceability to see where a config setting came from, but once the configuration is written out that information is written to a comment in the XML and then lost the next time the configuration is read back in. It would really be great to be able to store a complete history of where the config came from in the XML, so that it can then be retrieved later for debugging.

Issue Links

• is depended upon by: MAPREDUCE-4375 Show Configuration Tracability in MR UI
• supercedes: HADOOP-8524 Allow users to get source of a Configuration parameter