Martijn Visser created FLINK-39181:
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Summary: Reduce Verbose DEBUG Logging in CI
Key: FLINK-39181
URL: https://issues.apache.org/jira/browse/FLINK-39181
Project: Flink
Issue Type: Improvement
Components: Build System / CI
Reporter: Martijn Visser
Assignee: Martijn Visser
CI test runs produce excessive [DEBUG] log output in the console. The primary
noise comes from Maven Shade Plugin bytecode rewriting messages like:
[DEBUG] Keeping original class bytecode: org/apache/flink/table/planner/...
[DEBUG] Rewrote class bytecode: org/apache/flink/table/planner/...
These are caused by
-Dorg.slf4j.simpleLogger.log.org.apache.maven.plugins.shade=DEBUG set globally
in tools/ci/maven-utils.sh (line 76). This flag was intentionally added
(FLINK-38711) because shade plugin 3.6.1 changed "Including X in the shaded
jar" messages from INFO to DEBUG, and the ShadeParser / NoticeFileChecker
(license check) parses those lines. However, the flag is set globally and
affects all CI Maven invocations, including test runs where it's not needed.
Additionally, tools/ci/log4j.properties enables DEBUG for leader election and
ZooKeeper packages, adding noise to test log files.
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