[AIRFLOW] While airflow initdb, ImportError: cannot import name HiveOperator

Posted on 2017-03-10 14:09  LoveAI  阅读(1282)  评论(0)  编辑  收藏  举报

 

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I have recently installed airflow for my workflows. While creating my project, I executed following command:

airflow initdb

which returned following error:

[2016-08-15 11:17:00,314] {__init__.py:36} INFO - Using executor SequentialExecutor
DB: sqlite:////Users/mikhilraj/airflow/airflow.db
[2016-08-15 11:17:01,319] {db.py:222} INFO - Creating tables
INFO  [alembic.runtime.migration] Context impl SQLiteImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
ERROR [airflow.models.DagBag] Failed to import: /usr/local/lib/python2.7/site-packages/airflow/example_dags/example_twitter_dag.py
Traceback (most recent call last):
    File "/usr/local/lib/python2.7/site-packages/airflow/models.py", line 247, in process_file
       m = imp.load_source(mod_name, file path)
    File "/usr/local/lib/python2.7/site-packages/airflow/example_dags/example_twitter_dag.py", line 26, in <module>
       from airflow.operators import BashOperator, HiveOperator, PythonOperator
ImportError: cannot import name HiveOperator
Done.

I checked some similar issues on web, which suggested me to install airflow[hive], pyhs2 but it doesn't seem to work.

 

Are you using the HiveOperator? It seems like the error you are getting is due to 1 of the example dags. In production you should probably set load_examples to False and install airflow[hive] only if you are using the HiveOperator.

That being said, not sure why airflow[hive] isn't enough for you. You may try installing airflow[hive,hdfs,jdbc] but the airflow[hive] should be enough to get rid of the HiveOperatorimport error. Could you perhaps add what other error you are getting?

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Seems like that is the issue. On production airflow[hive] worked for me. Can you tell me how to set load_examples to False. – Rusty Aug 16 '16 at 8:18
2  
Check out the airflow.cfg file. Airflow automatically creates the default airflow.cfg file for you in the AIRFLOW_HOME dir. The file has a variable load_examples which by default is set to True – Vineet GoelAug 16 '16 at 18:41 
    
yeah. This worked on my local also. – Rusty Aug 17 '16 at 7:40
3  
The command pip install airflow[hive] was sufficient to resolve the error on a fresh install for me. – Taylor Edmiston Nov 14 '16 at 21:01