[HADOOP-9344] Configuration.writeXml can warn about deprecated properties user did not set

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.0.3-alpha, 0.23.5
• Component/s: conf
• Assignee: Rushabh Shah
• Reporter: Jason Darrell Lowe
• Created: 28/Feb/13 04:17
• Updated: 03/Mar/14 15:55
• Resolved: 03/Mar/14 15:55

Description

When the configuration is serialized it can emit warnings about deprecated properties that the user did not specify. Converting the config to XML causes all the properties in the config to be processed for deprecation, and after HADOOP-8167 setting a proper config property also causes the deprecated forms to be set. Processing all the keys in the config for deprecation therefore can trigger warnings for keys that were never specified by the user, leaving users confused as to how their code could be triggering these warnings.

Issue Links

• duplicates: HADOOP-10178 Configuration deprecation always emit "deprecated" warnings when a new key is used