Question

我的dag生成器模块中有一组任务，该模块使用Python在Airflow中使用的运算符。我正在kubernetes上使用docker部署气流。

任务失败，并显示错误消息：no module named pandas。使用熊猫的其他任务成功。

是的，我确实进入了容器（工人），发现pip3 freeze确实出现了大熊猫。

2018-12-13 12:30:23,332] {bash_operator.py:87} INFO - Temporary script location: /tmp/airflowtmppkovwfth/pscript_pclean_zjg4qfamp9pda9jsxysyrqfj_AWFtK5ucowyw2
[2018-12-13 12:30:23,333] {bash_operator.py:97} INFO - Running command: python /usr/local/airflow/rootfs/mopng_baseline_v2/scripts/pclean_zjg4qfamp9pda9jsxysyrqfj_AWFtK.py /usr/local/airflow/rootfs/mopng_baseline_v2/scheduled__2018-12-12T14:00:00+00:00/appended/DsDnV0TjSHnL0DF53JLjmUtO.csv /usr/local/airflow/rootfs/mopng_baseline_v2/scheduled__2018-12-12T14:00:00+00:00/pcleaned/ztYVV9nkh5t425gYjFqKuAD9.csv
[2018-12-13 12:30:23,344] {bash_operator.py:106} INFO - Output:
[2018-12-13 12:30:23,359] {bash_operator.py:110} INFO - Traceback (most recent call last):
[2018-12-13 12:30:23,359] {bash_operator.py:110} INFO -   File "/usr/local/airflow/rootfs/mopng_baseline_v2/scripts/pclean_zjg4qfamp9pda9jsxysyrqfj_AWFtK.py", line 3, in <module>
[2018-12-13 12:30:23,359] {bash_operator.py:110} INFO -     import pandas as pd
[2018-12-13 12:30:23,360] {bash_operator.py:110} INFO - ImportError: No module named pandas
[2018-12-13 12:30:23,362] {bash_operator.py:114} INFO - Command exited with return code 1
[2018-12-13 12:30:23,383] {models.py:1736} ERROR - Bash command failed
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/airflow/models.py", line 1633, in _run_raw_task
    result = task_copy.execute(context=context)
  File "/usr/local/lib/python3.5/dist-packages/airflow/operators/bash_operator.py", line 118, in execute
    raise AirflowException("Bash command failed")
airflow.exceptions.AirflowException: Bash command failed

Answer 1

操作员失败不是PythonOperator，而是BashOperator。最可能的原因是Bash中的python所指向的Python环境不同于运行Airflow的Python环境。

请务必在python3中指定BashOperator，或在与PythonOperator相同的环境中从命令行调用Python所需的任何其他配置。

BashOperator提高了其他PythonOperators中使用的库的ImportError

1 个答案: