Benjamin Teke created YARN-11415:
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Summary: Refactor TestConfigurationFieldsBase and the connected
test classes
Key: YARN-11415
URL: https://issues.apache.org/jira/browse/YARN-11415
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Benjamin Teke
YARN-11413 pointed out a strange way of how the configuration tests are
executed. The first problem is that there is a
[Pattern|https://github.com/apache/hadoop/blob/570b503e3e7e7adf5b0a8fabca76003298216543/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/conf/TestConfigurationFieldsBase.java#L197],
that matches only numbers, letters, dots, hyphens and underscores, but not %,
which is used in string replacements (i.e
{{yarn.nodemanager.aux-services.%s.classpath}} ), so essentially every property
that's present in any configuration object and doesn't match this pattern is
silently skipped, and documenting it will result in invalid test failures, ergo
the test encourages introducing props and not documenting them. The pattern
should be fixed in YARN-11413 for %s, but it's necessity could be checked.
Another issue with this is that it works in a semi-opposite way of what it's
supposed to do. To ensure all of the configuration entries are documented it
should iterate through all of the configuration fields and check if those have
matching xyz-default.xml entries, but currently it just reports the entries
that are present in the xyz-default.xml and missing in the matching
configuration file.
Lastly the logging should be improved, as {{LOG_CONFIG.debug(" Passes Regex:
false");}} isn't providing any useful information, at least the name of the
config should be logged.
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