airflow - 调度 Airflow DAG 作业

Question

我编写了一个 AirFlow DAG，如下 -

default_args = {
    'owner': 'airflow',
    'depends_on_past': False,
    'start_date': datetime(2016, 7, 5),
    'email': ['airflow@airflow.com'],
    'email_on_failure': False,
    'email_on_retry': False,
    'retries': 1,
    'retry_delay': timedelta(seconds=30),
    # 'queue': 'bash_queue',
    # 'pool': 'backfill',
    # 'priority_weight': 10,
    # 'end_date': datetime(2016, 1, 1),
}

dag = DAG(
    'test-air', default_args=default_args, schedule_interval='*/2 * * * *')
.................
.................
{{Tasks}}

根据上面的配置，作业应该每偶数分钟运行一次。但它显示以下输出

airflow scheduler -d test-air
[2016-07-05 15:24:02,168] {jobs.py:574} INFO - Prioritizing 0 queued jobs
[2016-07-05 15:24:02,177] {jobs.py:726} INFO - Starting 0 scheduler jobs
[2016-07-05 15:24:02,177] {jobs.py:741} INFO - Done queuing tasks, calling the executor's heartbeat
[2016-07-05 15:24:02,177] {jobs.py:744} INFO - Loop took: 0.012636 seconds
[2016-07-05 15:24:02,256] {models.py:305} INFO - Finding 'running' jobs without a recent heartbeat
[2016-07-05 15:24:02,256] {models.py:311} INFO - Failing jobs without heartbeat after 2016-07-05 15:21:47.256816
[2016-07-05 15:24:07,177] {jobs.py:574} INFO - Prioritizing 0 queued jobs
[2016-07-05 15:24:07,182] {jobs.py:726} INFO - Starting 0 scheduler jobs
[2016-07-05 15:24:07,182] {jobs.py:741} INFO - Done queuing tasks, calling the executor's heartbeat
[2016-07-05 15:24:07,182] {jobs.py:744} INFO - Loop took: 0.007725 seconds
[2016-07-05 15:24:07,249] {models.py:305} INFO - Finding 'running' jobs without a recent heartbeat
[2016-07-05 15:24:07,249] {models.py:311} INFO - Failing jobs without heartbeat after 2016-07-05 15:21:52.249706

有人可以引导我到这里吗？

谢谢帕里

Answer 1

默认情况下，创建的每个 dag 都处于“暂停”模式。这是在“airflow.cfg”文件中定义的。您可以通过以下方式取消暂停:

$ airflow unpause test-air

然后使用调度程序重试。

您还可以从 Airflow WebUI 打开/关闭 dag(默认情况下处于关闭状态)