我正在测试 Airflow 的使用，并且在同时触发（看似）大量 DAG 之后，它似乎只是无法安排任何事情并开始终止进程。这些是调度程序打印的日志：
[2019-08-29 11:17:13,542] {scheduler_job.py:214} WARNING - Killing PID 199809
[2019-08-29 11:17:13,544] {scheduler_job.py:214} WARNING - Killing PID 199809
[2019-08-29 11:17:44,614] {scheduler_job.py:214} WARNING - Killing PID 2992
[2019-08-29 11:17:44,614] {scheduler_job.py:214} WARNING - Killing PID 2992
[2019-08-29 11:18:15,692] {scheduler_job.py:214} WARNING - Killing PID 5174
[2019-08-29 11:18:15,693] {scheduler_job.py:214} WARNING - Killing PID 5174
[2019-08-29 11:18:46,765] {scheduler_job.py:214} WARNING - Killing PID 22410
[2019-08-29 11:18:46,766] {scheduler_job.py:214} WARNING - Killing PID 22410
[2019-08-29 11:19:17,845] {scheduler_job.py:214} WARNING - Killing PID 42177
[2019-08-29 11:19:17,846] {scheduler_job.py:214} …