Send Airflow CLI logs to stderr for -o commands so structured output stays parseable#68598
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…stays parseable CLI commands that accept -o (table|json|yaml|plain) write structured data to stdout. Airflow's default logging config routes the root console handler to sys.stdout, so any log line emitted while such a command runs is mixed into that data and breaks downstream parsers (most visibly: the Celery default visibility_timeout warning corrupts `airflow celery list-workers -o json` output). After parse_args() in the CLI entrypoint, redirect any root-logger StreamHandler whose stream is sys.stdout to sys.stderr, gated on hasattr(args, 'output'). Daemon commands (scheduler, api-server, celery worker, ...) do not register -o and so keep their existing stdout-logging behavior.
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Moving to 3.3.1 as planning to only include critical/high priority bug fixes to 3.3.0 found in 3.3.0b2 testing. |
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CLI commands that accept -o (table|json|yaml|plain) write structured data to stdout. Airflow's default logging config routes the root console handler to sys.stdout, so any log line emitted while such a command runs is mixed into that data and breaks downstream parsers (most visibly: the Celery default visibility_timeout warning corrupts
airflow celery list-workers -o jsonoutput).After parse_args() in the CLI entrypoint, redirect any root-logger StreamHandler whose stream is sys.stdout to sys.stderr, gated on hasattr(args, 'output'). Daemon commands (scheduler, api-server, celery worker, ...) do not register -o and so keep their existing stdout-logging behavior.
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Claude Code Opus 4.7