ashb commented on code in PR #44465:
URL: https://github.com/apache/airflow/pull/44465#discussion_r1862732883
##########
task_sdk/src/airflow/sdk/execution_time/supervisor.py:
##########
@@ -391,12 +391,55 @@ def _send_startup_message(self, ti: TaskInstance, path:
str | os.PathLike[str],
self.stdin.write(msg.model_dump_json().encode())
self.stdin.write(b"\n")
- def kill(self, signal: signal.Signals = signal.SIGINT):
+ def kill(
+ self,
+ signal_to_send: signal.Signals = signal.SIGINT,
+ escalation_delay: float = 5.0,
+ bypass_escalation: bool = False,
+ ):
+ """
+ Attempt to terminate the subprocess with a given signal.
+
+ If the process does not exit within `escalation_delay` seconds,
escalate to SIGTERM and eventually SIGKILL if necessary.
+
+ :param signal_to_send: The signal to send initially (default is
SIGINT).
+ :param escalation_delay: Time in seconds to wait before escalating to
a stronger signal.
+ :param bypass_escalation: If True, send the signal directly to the
process without escalation.
+ """
if self._exit_code is not None:
return
- with suppress(ProcessLookupError):
- os.kill(self.pid, signal)
+ if bypass_escalation:
Review Comment:
This "should" be impossible to hit, assuming it's from the wait, not the
os.kill call, as even if the process has exited, the process hangs around as a
Zombie (on linux this shows up as `<defunct>` in `ps aux`) until something
`wait`s on it. And as long as our process is alive, nothing else should wait on
it.
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