kaxil opened a new pull request #6748: [AIRFLOW-6192] Stop creating Hook from SFTPSensor.__init__ URL: https://github.com/apache/airflow/pull/6748 Make sure you have checked _all_ steps below. ### Jira - [x] My PR addresses the following [Airflow Jira](https://issues.apache.org/jira/browse/AIRFLOW/) issues and references them in the PR title. For example, "\[AIRFLOW-XXX\] My Airflow PR" - https://issues.apache.org/jira/browse/AIRFLOW-6192 ### Description - [x] Here are some details about my PR, including screenshots of any UI changes: From Slack (https://apache-airflow.slack.com/archives/CCQ7EGB1P/p1575647500146200): When I create a task based upon the SFTPSensor and then parse the Python file, do I see two log entries coming from base_hook.py referencing the default sftp connection id? I also see the same log messages whenever the DAGs are refreshed. ``` airflow@0030a4ae49df:~$ python dags/sftp_sensor.py [2019-12-06 15:45:16,440] settings.py:252 INFO - settings.configure_orm(): Using pool settings. pool_size=5, max_overflow=10, pool_recycle=1800, pid=9685 /usr/local/lib/python3.7/site-packages/psycopg2/_init_.py:144: UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: <http://initd.org/psycopg/docs/install.html#binary-install-from-pypi>. """) [2019-12-06 15:45:17,535] base_hook.py:84 INFO - Using connection to: id: sftp_default. Host: localhost, Port: 22, Schema: None, Login: airflow, Password: None, extra: {'key_file': '~/.ssh/id_rsa', 'no_host_key_check': True} [2019-12-06 15:45:17,539] base_hook.py:84 INFO - Using connection to: id: sftp_default. Host: localhost, Port: 22, Schema: None, Login: airflow, Password: None, extra: {'key_file': '~/.ssh/id_rsa', 'no_host_key_check': True} airflow@0030a4ae49df:~$ airflow list_dags [2019-12-06 15:47:43,529] settings.py:252 INFO - settings.configure_orm(): Using pool settings. pool_size=5, max_overflow=10, pool_recycle=1800, pid=11223 /usr/local/lib/python3.7/site-packages/psycopg2/_init_.py:144: UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: <http://initd.org/psycopg/docs/install.html#binary-install-from-pypi>. """) [2019-12-06 15:47:44,631] _init_.py:51 INFO - Using executor LocalExecutor [2019-12-06 15:47:44,631] dagbag.py:92 INFO - Filling up the DagBag from /usr/local/airflow/dags [2019-12-06 15:47:48,998] base_hook.py:84 INFO - Using connection to: id: sftp_default. Host: localhost, Port: 22, Schema: None, Login: airflow, Password: None, extra: {'key_file': '~/.ssh/id_rsa', 'no_host_key_check': True} [2019-12-06 15:47:49,005] base_hook.py:84 INFO - Using connection to: id: sftp_default. Host: localhost, Port: 22, Schema: None, Login: airflow, Password: None, extra: {'key_file': '~/.ssh/id_rsa', 'no_host_key_check': True} ``` This is on v1.10.6 ### Tests - [ ] My PR adds the following unit tests __OR__ does not need testing for this extremely good reason: ### Commits - [x] My commits all reference Jira issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)": 1. Subject is separated from body by a blank line 1. Subject is limited to 50 characters (not including Jira issue reference) 1. Subject does not end with a period 1. Subject uses the imperative mood ("add", not "adding") 1. Body wraps at 72 characters 1. Body explains "what" and "why", not "how" ### Documentation - [x] In case of new functionality, my PR adds documentation that describes how to use it. - All the public functions and the classes in the PR contain docstrings that explain what it does - If you implement backwards incompatible changes, please leave a note in the [Updating.md](https://github.com/apache/airflow/blob/master/UPDATING.md) so we can assign it to a appropriate release
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