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Fix signal handling in triggerer job runner #60190

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Merged
potiuk merged 1 commit into apache:main from astronomer:fix_signal_handling_triggerer
Jan 7, 2026
Merged

Fix signal handling in triggerer job runner #60190

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14 changes: 10 additions & 4 deletions airflow-core/src/airflow/jobs/triggerer_job_runner.py
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Original file line number Diff line number Diff line change
Expand Up @@ -158,12 +158,13 @@ def _exit_gracefully(self, signum, frame) -> None:
self.trigger_runner.stop = True
else:
self.log.warning("Forcing exit due to second exit signal %s", signum)

self.trigger_runner.kill(signal.SIGKILL)
if self.trigger_runner:
self.trigger_runner.kill(signal.SIGKILL)
sys.exit(os.EX_SOFTWARE)

def _execute(self) -> int | None:
self.log.info("Starting the triggerer")
self.register_signals()
try:
# Kick off runner sub-process without DB access
self.trigger_runner = TriggerRunnerSupervisor.start(
Expand Down Expand Up @@ -848,7 +849,6 @@ class TriggerRunner:
failed_triggers: deque[tuple[int, BaseException | None]]

# Should-we-stop flag
# TODO: set this in a sig-int handler
stop: bool = False

# TODO: connect this to the parent process
Expand All @@ -866,8 +866,14 @@ def __init__(self):
self.failed_triggers = deque()
self.job_id = None

def _handle_signal(self, signum, frame) -> None:
"""Handle termination signals gracefully."""
self.stop = True

def run(self):
"""Sync entrypoint - just run a run in an async loop."""
"""Sync entrypoint - just run arun in an async loop."""
signal.signal(signal.SIGINT, self._handle_signal)
signal.signal(signal.SIGTERM, self._handle_signal)
asyncio.run(self.arun())

async def arun(self):
Expand Down