使用 AWS MWAA 我正在尝试运行任务。有时，可能在 5% 的任务中，这些任务会失败，没有日志，也没有证据表明它曾经向工作人员提交过。（编辑：注意到同时发送两个任务时会发生这种情况）
在检查调度程序日志时，我发现 boto（我不在 DAG 中使用）引发了以下 Celery 错误：
[[34m2021-08-04 13:50:41,853[0m] {{[34mscheduler_job.py:[0m1109}} INFO[0m - Sending TaskInstanceKey(dag_id='XXX', task_id='XXXX', execution_date=datetime.datetime(2021, 8, 4, 13, 40, tzinfo=Timezone('UTC')), try_number=1) to executor with priority 1 and queue airflow-celery-abc123[0m
...
[[34m2021-08-04 13:50:41,854[0m] {{[34mbase_executor.py:[0m82}} INFO[0m - Adding to queue: ['airflow', 'tasks', 'run', 'xxxx', 'xxxxx', '2021-08-04T13:40:00+00:00', '--local', '--pool', 'default_pool', '--subdir', '/usr/local/airflow/dags/xxxx'][0m
...
[[34m2021-08-04 13:50:42,825[0m] {{[34mcelery_executor.py:[0m295}} ERROR[0m - Error sending Celery task: Unable to parse response (no element found: line 1, column 0), invalid XML received. Further retries may succeed:
2021-08-04T13:50:43.428Z b''
2021-08-04T13:50:43.452Z
Celery Task ID: TaskInstanceKey(dag_id='XXX', task_id='xxxxx', execution_date=datetime.datetime(2021, 8, 4, 13, 40, tzinfo=Timezone('UTC')), try_number=1)
2021-08-04T13:50:43.479Z Traceback (most recent call last):
2021-08-04T13:50:43.510Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/parsers.py", line 452, in _parse_xml_string_to_dom
2021-08-04T13:50:43.540Z root = parser.close()
2021-08-04T13:50:43.890Z File "<string>", line None
2021-08-04T13:50:43.923Z xml.etree.ElementTree.ParseError: no element found: line 1, column 0
2021-08-04T13:50:43.950Z
2021-08-04T13:50:43.989Z During handling of the above exception, another exception occurred:
2021-08-04T13:50:44.020Z
2021-08-04T13:50:44.054Z Traceback (most recent call last):
2021-08-04T13:50:44.084Z File "/usr/local/lib/python3.7/site-packages/airflow/executors/celery_executor.py", line 167, in send_task_to_executor
2021-08-04T13:50:44.117Z result = task_to_run.apply_async(args=[command], queue=queue)
2021-08-04T13:50:44.150Z File "/usr/local/lib/python3.7/site-packages/celery/app/task.py", line 570, in apply_async
2021-08-04T13:50:44.178Z **options
2021-08-04T13:50:44.207Z File "/usr/local/lib/python3.7/site-packages/celery/app/base.py", line 741, in send_task
2021-08-04T13:50:44.366Z amqp.send_task_message(P, name, message, **options)
2021-08-04T13:50:44.393Z File "/usr/local/lib/python3.7/site-packages/celery/app/amqp.py", line 561, in send_task_message
2021-08-04T13:50:44.427Z **properties
2021-08-04T13:50:44.457Z File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py", line 181, in publish
2021-08-04T13:50:44.485Z exchange_name, declare,
2021-08-04T13:50:44.519Z File "/usr/local/lib/python3.7/site-packages/kombu/connection.py", line 533, in _ensured
2021-08-04T13:50:44.542Z return fun(*args, **kwargs)
2021-08-04T13:50:44.567Z File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py", line 194, in _publish
2021-08-04T13:50:44.593Z [maybe_declare(entity) for entity in declare]
2021-08-04T13:50:44.686Z File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py", line 194, in <listcomp>
2021-08-04T13:50:44.716Z [maybe_declare(entity) for entity in declare]
2021-08-04T13:50:44.892Z File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py", line 102, in maybe_declare
2021-08-04T13:50:44.929Z return maybe_declare(entity, self.channel, retry, **retry_policy)
2021-08-04T13:50:44.963Z File "/usr/local/lib/python3.7/site-packages/kombu/common.py", line 121, in maybe_declare
2021-08-04T13:50:44.994Z return _maybe_declare(entity, channel)
2021-08-04T13:50:45.027Z File "/usr/local/lib/python3.7/site-packages/kombu/common.py", line 161, in _maybe_declare
2021-08-04T13:50:45.079Z entity.declare(channel=channel)
2021-08-04T13:50:45.108Z File "/usr/local/lib/python3.7/site-packages/kombu/entity.py", line 611, in declare
2021-08-04T13:50:45.138Z self._create_queue(nowait=nowait, channel=channel)
2021-08-04T13:50:45.167Z File "/usr/local/lib/python3.7/site-packages/kombu/entity.py", line 620, in _create_queue
2021-08-04T13:50:45.195Z self.queue_declare(nowait=nowait, passive=False, channel=channel)
2021-08-04T13:50:45.232Z File "/usr/local/lib/python3.7/site-packages/kombu/entity.py", line 655, in queue_declare
2021-08-04T13:50:45.610Z nowait=nowait,
2021-08-04T13:50:45.639Z File "/usr/local/lib/python3.7/site-packages/kombu/transport/virtual/base.py", line 532, in queue_declare
2021-08-04T13:50:45.675Z return queue_declare_ok_t(queue, self._size(queue), 0)
2021-08-04T13:50:45.712Z File "/usr/local/lib/python3.7/site-packages/kombu/transport/SQS.py", line 484, in _size
2021-08-04T13:50:45.741Z AttributeNames=['ApproximateNumberOfMessages'])
2021-08-04T13:50:45.773Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/client.py", line 357, in _api_call
2021-08-04T13:50:45.802Z return self._make_api_call(operation_name, kwargs)
2021-08-04T13:50:45.826Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/client.py", line 663, in _make_api_call
2021-08-04T13:50:45.859Z operation_model, request_dict, request_context)
2021-08-04T13:50:45.886Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/client.py", line 682, in _make_request
2021-08-04T13:50:45.911Z return self._endpoint.make_request(operation_model, request_dict)
2021-08-04T13:50:46.066Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/endpoint.py", line 102, in make_request
2021-08-04T13:50:46.095Z return self._send_request(request_dict, operation_model)
2021-08-04T13:50:46.122Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/endpoint.py", line 135, in _send_request
2021-08-04T13:50:46.151Z request, operation_model, context)
2021-08-04T13:50:46.178Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/endpoint.py", line 167, in _get_response
2021-08-04T13:50:46.204Z request, operation_model)
2021-08-04T13:50:46.233Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/endpoint.py", line 218, in _do_get_response
2021-08-04T13:50:46.259Z response_dict, operation_model.output_shape)
2021-08-04T13:50:46.286Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/parsers.py", line 245, in parse
2021-08-04T13:50:46.315Z parsed = self._do_parse(response, shape)
2021-08-04T13:50:46.346Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/parsers.py", line 523, in _do_parse
2021-08-04T13:50:47.279Z return self._parse_body_as_xml(response, shape, inject_metadata=True)
2021-08-04T13:50:47.313Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/parsers.py", line 527, in _parse_body_as_xml
2021-08-04T13:50:47.344Z root = self._parse_xml_string_to_dom(xml_contents)
2021-08-04T13:50:47.377Z File "/usr/local/airflow/.local/lib/python3.7/site-packages/botocore/parsers.py", line 457, in _parse_xml_string_to_dom
2021-08-04T13:50:47.410Z (e, xml_string))
2021-08-04T13:50:47.440Z botocore.parsers.ResponseParserError: Unable to parse response (no element found: line 1, column 0), invalid XML received. Further retries may succeed:
2021-08-04T13:50:47.468Z b''
...
[[34m2021-08-04 13:50:42,869[0m] {{[34mscheduler_job.py:[0m1239}} ERROR[0m - Executor reports task instance <TaskInstance: xxx.xxxx 2021-08-04 13:40:00+00:00 [queued]> finished (failed) although the task says its queued. (Info: None) Was the task killed externally?[0m
检查这篇文章似乎调度程序共享 boto 会话可能存在一些问题？有人对如何解决这个问题有任何提示吗？