Apache管理气流EMR操作员DAG失败

Question

我正在apache管理的气流工作流环境中创建DAG。DAG基本上使用EMR操作符，它创建EMR集群，运行DAG中定义的spark作业并删除EMR集群。我从气流网站上取了代码。这是代码的链接-https://airflow.apache.org/docs/apache-airflow-providers-amazon/stable/_modules/airflow/providers/amazon/aws/example_dags/example_emr_job_flow_manual_steps.html

错误信息:[EMR集群正在创建，但它显示如下，是错误与气流有关]

2021-08-25 05:00:04,520] {{logging_mixin.py:104}} INFO - [2021-08-25 05:00:04,520] {{local_task_job.py:188}} WARNING - State of this instance has been externally set to skipped. Terminating instance.
[2021-08-25 05:00:04,600] {{process_utils.py:100}} INFO - Sending Signals.SIGTERM to GPID 1897
[2021-08-25 05:00:04,621] {{taskinstance.py:1265}} ERROR - Received SIGTERM. Terminating subprocesses.
[2021-08-25 05:00:04,702] {{taskinstance.py:1482}} ERROR - Task failed with exception
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line 1138, in _run_raw_task
self._prepare_and_execute_task_with_callbacks(context, task)
File "/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line 1311, in _prepare_and_execute_task_with_callbacks
result = self._execute_task(context, task_copy)
File "/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line 1341, in _execute_task
result = task_copy.execute(context=context)
File "/usr/local/lib/python3.7/site-packages/airflow/sensors/base.py", line 243, in execute
time.sleep(self._get_next_poke_interval(started_at, run_duration, try_number))
File "/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line 1267, in signal_handler
raise AirflowException("Task received SIGTERM signal")
airflow.exceptions.AirflowException: Task received SIGTERM signal
[2021-08-25 05:00:04,725] {{taskinstance.py:1532}} INFO - Marking task as FAILED. dag_id=emr_job_flow_manual_steps_dag, task_id=watch_step, execution_date=20210824T030000, start_date=20210825T030008, end_date=20210825T050004
[2021-08-25 05:00:04,793] {{process_utils.py:66}} INFO - Process psutil.Process(pid=1897, status='terminated', exitcode=1, started='03:00:07') (1897) terminated with exit code 1

我的气流环境类:mw1.small

Answer 1

看起来你的DAG只是在2小时后超时了:

start_date=20210825T030008, end_date=20210825T050004

不幸的是，MWAA与其他AWS服务的集成没有很好的文档记录，但我猜MWAA环境执行角色没有操作EMR集群的权限。

检查MWAA操作的角色并分配所需的权限，如下所示:

https://airflow.apache.org/docs/apache-airflow-providers-amazon/stable/operators/emr.html

为了成功运行这两个示例，您需要为Amazon EMR创建IAM服务角色(EMR_EC2_DefaultRole和EMR_DefaultRole)。

您可以使用AWS命令行创建这些角色: