Harsh J created HADOOP-8524:
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Summary: Allow users to get source of a Configuration parameter
Key: HADOOP-8524
URL: https://issues.apache.org/jira/browse/HADOOP-8524
Project: Hadoop Common
Issue Type: Improvement
Components: conf
Reporter: Harsh J
Priority: Trivial
When we load the various XMLs via the Configuration class, the source of the
XML file (filename) is usually kept in the Configuration class but not exposed
programmatically. It is presently exposed as comments such as "Loaded from
mapred-site.xml" in the XML dump/serialization but can't be accessed otherwise
(Via the Configuration API).
For debugging/etc. purposes, it may be useful to expose this safely (such as an
API for "where did this property come from?" queries for a specific property,
via an API.
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