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Add SIGUSR2 handler for LocalTaskJob and workers to aid debugging #28309

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Merged
jedcunningham merged 2 commits into from
Dec 12, 2022
Merged

Add SIGUSR2 handler for LocalTaskJob and workers to aid debugging #28309

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1a9c946
Add SIGUSR2 handler for LocalTaskJob and workers to aid debugging
ashb Dec 12, 2022
abc0a00
Merge branch 'main' into usr2-debug-workers
jedcunningham Dec 12, 2022
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11 changes: 11 additions & 0 deletions airflow/jobs/local_task_job.py
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Original file line number Diff line number Diff line change
Expand Up @@ -120,8 +120,19 @@ def segfault_signal_handler(signum, frame):
self.handle_task_exit(128 + signum)
raise AirflowException("Segmentation Fault detected.")

def sigusr2_debug_handler(signum, frame):
import sys
import threading
import traceback

id2name = {th.ident: th.name for th in threading.enumerate()}
for threadId, stack in sys._current_frames().items():
print(id2name[threadId])
traceback.print_stack(f=stack)

signal.signal(signal.SIGSEGV, segfault_signal_handler)
signal.signal(signal.SIGTERM, signal_handler)
signal.signal(signal.SIGUSR2, sigusr2_debug_handler)

if not self.task_instance.check_and_change_state_before_execution(
mark_success=self.mark_success,
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