anishgirianish commented on code in PR #62343:
URL: https://github.com/apache/airflow/pull/62343#discussion_r3025677085
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airflow-core/src/airflow/jobs/scheduler_job_runner.py:
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@@ -3122,6 +3136,86 @@ def _activate_assets_generate_warnings() ->
Iterator[tuple[str, str]]:
session.add(warning)
existing_warned_dag_ids.add(warning.dag_id)
+ def _enqueue_connection_tests(self, *, session: Session) -> None:
+ """Enqueue pending connection tests to executors that support them."""
+ max_concurrency = conf.getint("core",
"max_connection_test_concurrency", fallback=4)
+ timeout = conf.getint("core", "connection_test_timeout", fallback=60)
+
+ num_occupied_slots = sum(executor.slots_occupied for executor in
self.executors)
+ parallelism_budget = conf.getint("core", "parallelism") -
num_occupied_slots
+ if parallelism_budget <= 0:
+ return
+
+ active_count = session.scalar(
+ select(func.count(ConnectionTestRequest.id)).where(
+ ConnectionTestRequest.state.in_(DISPATCHED_STATES)
+ )
+ )
+ concurrency_budget = max_concurrency - (active_count or 0)
+ budget = min(concurrency_budget, parallelism_budget)
+ if budget <= 0:
+ return
+
+ pending_stmt = (
+ select(ConnectionTestRequest)
+ .where(ConnectionTestRequest.state == ConnectionTestState.PENDING)
+ .order_by(ConnectionTestRequest.created_at)
+ .limit(budget)
+ )
+ pending_stmt = with_row_locks(pending_stmt, session,
of=ConnectionTestRequest, skip_locked=True)
+ pending_tests = session.scalars(pending_stmt).all()
+
+ if not pending_tests:
+ return
+
+ for ct in pending_tests:
+ executor = self._try_to_load_executor(ct, session)
+ if executor is not None and not executor.supports_connection_test:
+ executor = None
+ if executor is None:
+ reason = (
+ f"No executor matches '{ct.executor}'"
+ if ct.executor
+ else "No executor supports connection testing"
+ )
+ ct.state = ConnectionTestState.FAILED
+ ct.result_message = reason
+ self.log.warning("Failing connection test %s: %s", ct.id,
reason)
+ continue
+
+ workload = workloads.TestConnection.make(
+ connection_test_id=ct.id,
+ connection_id=ct.connection_id,
+ timeout=timeout,
+ queue=ct.queue,
+ generator=executor.jwt_generator,
+ )
+ executor.queue_workload(workload, session=session)
+ ct.state = ConnectionTestState.QUEUED
+
+ session.flush()
+
+ @provide_session
+ def _reap_stale_connection_tests(self, *, session: Session = NEW_SESSION)
-> None:
+ """Mark connection tests that have exceeded their timeout as FAILED."""
+ timeout = conf.getint("core", "connection_test_timeout", fallback=60)
+ grace_period = max(30, timeout // 2)
+ cutoff = timezone.utcnow() - timedelta(seconds=timeout + grace_period)
+
+ stale_stmt = select(ConnectionTestRequest).where(
+ ConnectionTestRequest.state.in_(ACTIVE_STATES),
Review Comment:
This is intentional. The reaper cutoff is timeout + grace_period (default 90
seconds). A PENDING test that has been sitting that long means the scheduler
never picked it up something is wrong. Without reaping PENDING rows, they would
block the user's polling endpoint indefinitely and prevent future tests for
that connection_id (due to the "only one active test" check). Using
DISPATCHED_STATES would leave stuck PENDING rows orphaned with no cleanup path.
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